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fhem-mirror/FHEM/44_S7_S7Client.pm
charlie71 84c4c72f0e 44_S7: Bugfixes 
git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@15511 2b470e98-0d58-463d-a4d8-8e2adae1ed80
2017-11-27 21:13:16 +00:00

1337 lines
33 KiB
Perl
Raw Blame History

# $Id$
##############################################
use strict;
use warnings;
require Exporter;
use Config;
use AutoLoader;
require "44_S7_Client.pm" ;
#use Socket;
use IO::Socket::INET;
use IO::Select;
#todo
#fehler in settimino:
#function :WriteArea & ReadArea
#bit shift opteratin in wrong direction
# PDU.H[23]=NumElements<<8; --> PDU.H[23]=NumElements>>8;
# PDU.H[24]=NumElements;
our @ISA = qw(Exporter);
our %EXPORT_TAGS = (
'all' => [
qw(
errTCPConnectionFailed
errTCPConnectionReset
errTCPDataRecvTout
errTCPDataSend
errTCPDataRecv
errISOConnectionFailed
errISONegotiatingPDU
errISOInvalidPDU
errS7InvalidPDU
errS7SendingPDU
errS7DataRead
errS7DataWrite
errS7Function
errBufferTooSmall
Code7Ok
Code7AddressOutOfRange
Code7InvalidTransportSize
Code7WriteDataSizeMismatch
Code7ResItemNotAvailable
Code7ResItemNotAvailable1
Code7InvalidValue
Code7NeedPassword
Code7InvalidPassword
Code7NoPasswordToClear
Code7NoPasswordToSet
Code7FunNotAvailable
Code7DataOverPDU
S7_PG
S7_OP
S7_Basic
ISOSize
isotcp
MinPduSize
MaxPduSize
CC
S7Shift
S7WLBit
S7WLByte
S7WLWord
S7WLDWord
S7WLReal
S7WLCounter
S7WLTimer
S7CpuStatusUnknown
S7CpuStatusRun
S7CpuStatusStop
RxOffset
Size_RD
Size_WR
Size_DT
)
]
);
our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
our @EXPORT = qw(
errTCPConnectionFailed
errTCPConnectionReset
errTCPDataRecvTout
errTCPDataSend
errTCPDataRecv
errISOConnectionFailed
errISONegotiatingPDU
errISOInvalidPDU
errS7InvalidPDU
errS7SendingPDU
errS7DataRead
errS7DataWrite
errS7Function
errBufferTooSmall
Code7Ok
Code7AddressOutOfRange
Code7InvalidTransportSize
Code7WriteDataSizeMismatch
Code7ResItemNotAvailable
Code7ResItemNotAvailable1
Code7InvalidValue
Code7NeedPassword
Code7InvalidPassword
Code7NoPasswordToClear
Code7NoPasswordToSet
Code7FunNotAvailable
Code7DataOverPDU
S7_PG
S7_OP
S7_Basic
ISOSize
isotcp
MinPduSize
MaxPduSize
CC
S7Shift
S7WLBit
S7WLByte
S7WLWord
S7WLDWord
S7WLReal
S7WLCounter
S7WLTimer
S7CpuStatusUnknown
S7CpuStatusRun
S7CpuStatusStop
RxOffset
Size_RD
Size_WR
Size_DT
);
package S7Client;
use strict;
#use S7ClientBase;
our @ISA = qw(S7ClientBase); # inherits from Person
# Error Codes
# from 0x0001 up to 0x00FF are severe errors, the Client should be disconnected
# from 0x0100 are S7 Errors such as DB not found or address beyond the limit etc..
# For Arduino Due the error code is a 32 bit integer but this doesn't change the constants use.
use constant errTCPConnectionFailed => 0x0001;
use constant errTCPConnectionReset => 0x0002;
use constant errTCPDataRecvTout => 0x0003;
use constant errTCPDataSend => 0x0004;
use constant errTCPDataRecv => 0x0005;
use constant errISOConnectionFailed => 0x0006;
use constant errISONegotiatingPDU => 0x0007;
use constant errISOInvalidPDU => 0x0008;
use constant errS7InvalidPDU => 0x0100;
use constant errS7SendingPDU => 0x0200;
use constant errS7DataRead => 0x0300;
use constant errS7DataWrite => 0x0400;
use constant errS7Function => 0x0500;
use constant errBufferTooSmall => 0x0600;
#CPU Errors
# S7 outcoming Error code
use constant Code7Ok => 0x0000;
use constant Code7AddressOutOfRange => 0x0005;
use constant Code7InvalidTransportSize => 0x0006;
use constant Code7WriteDataSizeMismatch => 0x0007;
use constant Code7ResItemNotAvailable => 0x000A;
use constant Code7ResItemNotAvailable1 => 0xD209;
use constant Code7InvalidValue => 0xDC01;
use constant Code7NeedPassword => 0xD241;
use constant Code7InvalidPassword => 0xD602;
use constant Code7NoPasswordToClear => 0xD604;
use constant Code7NoPasswordToSet => 0xD605;
use constant Code7FunNotAvailable => 0x8104;
use constant Code7DataOverPDU => 0x8500;
# Connection Type
use constant S7_PG => 0x01;
use constant S7_OP => 0x02;
use constant S7_Basic => 0x03;
# ISO and PDU related constants
use constant ISOSize => 7; # Size of TPKT + COTP Header
use constant isotcp => 102; # ISOTCP Port
use constant MinPduSize => 16; # Minimum S7 valid telegram size
use constant MaxPduSize =>
247; # Maximum S7 valid telegram size (we negotiate 240 bytes + ISOSize)
use constant CC => 0xD0; # Connection confirm
use constant S7Shift =>
17; # We receive data 17 bytes above to align with PDU.DATA[]
# WordLength
use constant S7WLBit => 0x01;
use constant S7WLByte => 0x02;
use constant S7WLChar => 0x03;
use constant S7WLWord => 0x04;
use constant S7WLInt => 0x05;
use constant S7WLDWord => 0x06;
use constant S7WLDInt => 0x07;
use constant S7WLReal => 0x08;
use constant S7WLCounter => 0x1C;
use constant S7WLTimer => 0x1D;
# Result transport size
use constant TS_ResBit => 0x03;
use constant TS_ResByte => 0x04;
use constant TS_ResInt => 0x05;
use constant TS_ResReal => 0x07;
use constant TS_ResOctet => 0x09;
use constant S7CpuStatusUnknown => 0x00;
use constant S7CpuStatusRun => 0x08;
use constant S7CpuStatusStop => 0x04;
use constant RxOffset => 18;
use constant Size_DT => 25;
use constant Size_RD => 31;
use constant Size_WR => 35;
sub new {
my $class = shift;
my $self = $class->SUPER::new();
$self->{LocalTSAP_HI} = 0x01;
$self->{LocalTSAP_LO} = 0x00;
$self->{RemoteTSAP_HI} = 0x01;
$self->{RemoteTSAP_LO} = 0x02;
$self->{ConnType} = &S7_PG;
$self->{LastError} = 0;
$self->{LastPDUType} = 0;
$self->{Peer} = "";
$self->{ISO_CR} = "";
$self->{S7_PN} = "";
$self->{S7_RW} = "";
$self->{PDU} = {};
$self->{cntword} = 0;
#ISO Connection Request telegram (contains also ISO Header and COTP Header)
$self->{ISO_CR} = pack(
"C22",
# TPKT (RFC1006 Header)
0x03, # RFC 1006 ID (3)
0x00, # Reserved, always 0
0x00
, # High part of packet length (entire frame, payload and TPDU included)
0x16
, # Low part of packet length (entire frame, payload and TPDU included)
# COTP (ISO 8073 Header)
0x11, # PDU Size Length
0xE0, # CR - Connection Request ID
0x00, # Dst Reference HI
0x00, # Dst Reference LO
0x00, # Src Reference HI
0x01, # Src Reference LO
0x00, # Class + Options Flags
0xC0, # PDU Max Length ID
0x01, # PDU Max Length HI
0x0A, # PDU Max Length LO # snap7 value Bytes 1024
# 0x09, # PDU Max Length LO # libnodave value Bytes 512
0xC1, # Src TSAP Identifier
0x02, # Src TSAP Length (2 bytes)
0x01, # Src TSAP HI (will be overwritten by ISOConnect())
0x00, # Src TSAP LO (will be overwritten by ISOConnect())
0xC2, # Dst TSAP Identifier
0x02, # Dst TSAP Length (2 bytes)
0x01, # Dst TSAP HI (will be overwritten by ISOConnect())
0x02 # Dst TSAP LO (will be overwritten by ISOConnect())
);
# S7 PDU Negotiation Telegram (contains also ISO Header and COTP Header)
$self->{S7_PN} = pack(
"C25",
0x03, 0x00, 0x00, 0x19, 0x02, 0xf0,
0x80, # TPKT + COTP (see above for info)
0x32, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, #snap7 trace
0x00, 0xf0, 0x00, 0x00, 0x01, 0x00, 0x01,
# 0x00, 0xf0 # PDU Length Requested = HI-LO 240 bytes
# 0x01, 0xe0 # PDU Length Requested = HI-LO 480 bytes
0x03, 0xc0 # PDU Length Requested = HI-LO 960 bytes
);
# S7 Read/Write Request Header (contains also ISO Header and COTP Header)
$self->{S7_RW} = pack(
"C35", # 31-35 bytes
0x03, 0x00,
0x00, 0x1f, # Telegram Length (Data Size + 31 or 35)
0x02, 0xf0, 0x80, # COTP (see above for info)
0x32, # S7 Protocol ID
0x01, # Job Type
0x00, 0x00, # Redundancy identification (AB_EX)
0x05, 0x00, # PDU Reference #snap7 (increment by every read/write)
0x00, 0x0e, # Parameters Length
0x00, 0x00, # Data Length = Size(bytes) + 4
0x04, # Function 4 Read Var, 5 Write Var
#reqest param head
0x01, # Items count
0x12, # Var spec.
0x0a, # Length of remaining bytes
0x10, # Syntax ID
&S7WLByte, # Transport Size
0x00, 0x00, # Num Elements
0x00, 0x00, # DB Number (if any, else 0)
0x84, # Area Type
0x00, 0x00, 0x00, # Area Offset
# WR area
0x00, # Reserved
0x04, # Transport size
0x00, 0x00, # Data Length * 8 (if not timer or counter)
);
$self->{PDU}->{H} = pack( "C35",
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 );
$self->{PDU}->{DATA} = "";
$self->{TCPClient} = undef;
return bless $self, $class;
}
#-----------------------------------------------------------------------------
sub GetNextWord {
my $self = shift;
$self->{cntword} = 0 if ( $self->{cntword} == 0xFFFF );
return $self->{cntword}++;
}
#-----------------------------------------------------------------------------
sub SetLastError {
my ( $self, $Error ) = @_;
$self->{LastError} = $Error;
return $Error;
}
#-----------------------------------------------------------------------------
sub WaitForData {
my ( $self, $Size, $Timeout ) = @_;
my $BytesReady;
$Timeout = $Timeout / 1000;
# $Timeout = 1 if ($Timeout < 1); #deactivated in V2.9
my @ready = $self->{TCPClientSel}->can_read($Timeout);
if ( scalar(@ready) ) {
return $self->SetLastError(0);
}
# Here we are in timeout zone, if there's something into the buffer, it must be discarded.
$self->{TCPClient}->flush();
if ( !$self->{TCPClient}->connected() ) {
return $self->SetLastError(&errTCPConnectionReset);
}
return $self->SetLastError(&errTCPDataRecvTout);
}
#-----------------------------------------------------------------------------
sub IsoPduSize {
my ($self) = @_;
my @buffer = unpack( "C" x 4, $self->{PDU}->{H} );
my $Size = $buffer[2];
return ( $Size << 8 ) + $buffer[3];
}
#-----------------------------------------------------------------------------
sub RecvPacket {
my ( $self, $Size ) = @_;
my $buf;
$self->WaitForData( $Size, $self->{RecvTimeout} );
if ( $self->{LastError} != 0 ) {
return $self->{LastError};
}
my $res = $self->{TCPClient}->recv( $buf, $Size );
if ( defined($buf) && length($buf) == $Size ) {
return ( $self->SetLastError(0), $buf );
}
else {
if ( defined($buf) ) {
if ( $main::attr{global}{verbose} <= 3 ) {
my $b = join( ", ", unpack( "H2 " x length($buf), $buf ) );
main::Log3 (undef, 3, "TCPClient RecvPacket error (IP= ". $self->{Peer} . "): " . $b);
}
}
else {
main::Log3 (undef, 3, "TCPClient RecvPacket error (IP= " . $self->{Peer} . ").");
}
return $self->SetLastError( &errTCPConnectionReset, $buf );
}
}
#-----------------------------------------------------------------------------
sub SetConnectionParams {
my ( $self, $Address, $LocalTSAP, $RemoteTSAP ) = @_;
$self->{Peer} = $Address;
$self->{LocalTSAP_HI} = $LocalTSAP >> 8;
$self->{LocalTSAP_LO} = $LocalTSAP & 0x00FF;
$self->{RemoteTSAP_HI} = $RemoteTSAP >> 8;
$self->{RemoteTSAP_LO} = $RemoteTSAP & 0x00FF;
}
#-----------------------------------------------------------------------------
sub SetConnectionType {
my ( $self, $ConnectionType ) = @_;
$self->{ConnType} = $ConnectionType;
}
#-----------------------------------------------------------------------------
sub ConnectTo {
my ( $self, $Address, $Rack, $Slot ) = @_;
$self->SetConnectionParams( $Address, 0x0100,
( $self->{ConnType} << 8 ) + ( $Rack * 0x20 ) + $Slot );
return $self->Connect();
}
#-----------------------------------------------------------------------------
sub Connect {
my ($self) = @_;
$self->{LastError} = 0;
if ( !$self->{Connected} ) {
$self->TCPConnect();
if ( $self->{LastError} == 0 ) # First stage : TCP Connection
{
$self->ISOConnect();
if ( $self->{LastError} ==
0 ) # Second stage : ISOTCP (ISO 8073) Connection
{
$self->{LastError} = $self->NegotiatePduLength()
; # Third stage : S7 PDU negotiation
}
}
}
if ( $self->{LastError} == 0 ) {
$self->{Connected} = 1;
}
else {
$self->{Connected} = 0;
}
return $self->{LastError};
}
#-----------------------------------------------------------------------------
sub Disconnect {
my ($self) = @_;
if ( $self->{Connected} ) {
$self->{TCPClientSel} = undef;
if ( defined( $self->{TCPClient} ) ) {
my $res = shutdown( $self->{TCPClient}, 1 );
if ( defined($res) ) {
$self->{TCPClient}->flush() if ( $res == 0 );
}
$self->{TCPClient}->close();
$self->{TCPClient} = undef;
}
$self->{Connected} = 0;
$self->{PDULength} = 0;
$self->{MaxReadLength} = 0;
$self->{LastError} = 0;
}
}
#-----------------------------------------------------------------------------
sub TCPConnect {
my ($self) = @_;
# # 1. create a socket handle (descriptor)
# my($sock);
# socket($sock, AF_INET, SOCK_STREAM, IPPROTO_TCP);#TCP_NODELAY,
#
# or die "ERROR in Socket Creation: $!";
#
# # 2. connect to remote server
# my $remote = $self->{Peer};
#
# my $iaddr = inet_aton($remote) or die "Unable to resolve hostname : $remote";
# my $paddr = sockaddr_in(&isotcp, $iaddr); #socket address structure
#
# connect($sock , $paddr) or die "connect to $remote failed : $!";
# $self->{TCPClient} = $sock;
# return $self->SetLastError(0);
#
# $self->{TCPClientSel} = new IO::Select($self->{TCPClient});
$self->{TCPClient} = new IO::Socket::INET(
PeerAddr => $self->{Peer},
# PeerHost => $self->{Peer},
PeerPort => &isotcp,
Type => Socket::SOCK_STREAM, # probably needed on some systems
Proto => 'tcp',
) or die "ERROR in Socket Creation: $!";
$self->{TCPClient}->sockopt( &Socket::TCP_NODELAY, 1 );
$self->{TCPClient}->autoflush(1);
$self->{TCPClientSel} = new IO::Select( $self->{TCPClient} );
return $self->SetLastError(0);
}
#-----------------------------------------------------------------------------
sub RecvISOPacket {
my ($self) = @_;
my $Size;
my $Done = 0;
my $pdubuffer = "";
my $res;
$self->{LastError} = 0;
while ( ( $self->{LastError} == 0 ) && !$Done ) {
# Get TPKT (4 bytes)
( $res, $pdubuffer ) = $self->RecvPacket(4);
if ( $self->{LastError} == 0 ) {
my $b = join( ", ", unpack( "H2 " x 4, $pdubuffer ) );
$self->{PDU}->{H} = $pdubuffer . substr( $self->{PDU}->{H}, 4 );
$Size = $self->IsoPduSize();
main::Log3(undef, 5, "TCPClient RecvISOPacket Expected Size = $Size");
# Check 0 bytes Data Packet (only TPKT+COTP - 7 bytes)
if ( $Size == 7 ) {
$pdubuffer = "";
( $res, $pdubuffer ) = $self->RecvPacket(3);
$self->{PDU}->{H} = $pdubuffer . substr( $self->{PDU}->{H}, 3 );
}
else {
my $maxlen = $self->{PDULength} + &ISOSize;
if ( $maxlen <= &MinPduSize ) {
$maxlen = &MaxPduSize;
}
# if (($Size > &MaxPduSize) || ($Size < &MinPduSize)) {
if ( ( $Size > $maxlen ) || ( $Size < &MinPduSize ) ) {
main::Log3 (undef, 3, "TCPClient RecvISOPacket PDU overflow (IP= " . $self->{Peer} . "): size = $Size , maxPDULength = " . $self->{PDULength});
$self->{LastError} = &errISOInvalidPDU;
}
else {
$Done = 1; # a valid Length !=7 && >16 && <247
}
}
}
}
if ( $self->{LastError} == 0 ) {
$pdubuffer = "";
( $res, $pdubuffer ) = $self->RecvPacket(3);
$self->{PDU}->{H} = $pdubuffer
. substr( $self->{PDU}->{H}, 3 ); # Skip remaining 3 COTP bytes
my @mypdu = unpack( "C2", $self->{PDU}->{H} );
$self->{LastPDUType} = $mypdu[1]; # Stores PDU Type, we need it
$Size -= &ISOSize;
# We need to align with PDU.DATA
$pdubuffer = "";
( $res, $pdubuffer ) = $self->RecvPacket($Size);
if ( $main::attr{global}{verbose} >= 5 ) {
my $b = join( ", ", unpack( "H2 " x $Size, $pdubuffer ) );
main::Log3 (undef, 5, "TCPClient RecvISOPacket (IP= " . $self->{Peer} . "): $b");
}
#we write the data starting at position 17 (shift) into the PDU.H
if ( $self->{LastError} == 0 ) {
if ( $Size > &Size_WR - &S7Shift ) {
my $headerSize = &Size_WR - &S7Shift;
$self->{PDU}->{H} =
substr( $self->{PDU}->{H}, 0, &S7Shift )
. substr( $pdubuffer, 0, $headerSize );
$self->{PDU}->{DATA} = substr( $pdubuffer, $headerSize );
}
else {
$self->{PDU}->{H} =
substr( $self->{PDU}->{H}, 0, &S7Shift )
. $pdubuffer
. substr( $self->{PDU}->{H}, &Size_WR - &S7Shift - $Size );
}
}
}
if ( $self->{LastError} != 0 ) {
$self->{TCPClient}->flush();
}
return ( $self->{LastError}, $Size );
}
#-----------------------------------------------------------------------------
sub ISOConnect {
my ($self) = @_;
my $Done = 0;
my $myLength = 0;
my $res;
# Setup TSAPs
my @myISO_CR = unpack( "C22", $self->{ISO_CR} );
$myISO_CR[16] = $self->{LocalTSAP_HI};
$myISO_CR[17] = $self->{LocalTSAP_LO};
$myISO_CR[20] = $self->{RemoteTSAP_HI};
$myISO_CR[21] = $self->{RemoteTSAP_LO};
$self->{ISO_CR} = pack( "C22", @myISO_CR );
my $b = join( ", ", unpack( "H2 " x 22, $self->{ISO_CR} ) );
if ( $self->{TCPClient}->send( $self->{ISO_CR} ) == 22 )
# if (send($self->{TCPClient}, $self->{ISO_CR}, &MSG_NOSIGNAL)==22)
{
( $res, $myLength ) = $self->RecvISOPacket();
if ( ( $self->{LastError} == 0 )
&& ( $myLength == 15 )
) # 15 = 22 (sizeof CC telegram) - 7 (sizeof Header)
{
if ( $self->{LastPDUType} == &CC ) { #Connection confirm
return 0;
}
else {
return $self->SetLastError(&errISOInvalidPDU);
}
}
else {
return $self->{LastError};
}
}
else {
return $self->SetLastError(&errISOConnectionFailed);
}
}
#-----------------------------------------------------------------------------
sub NegotiatePduLength {
my ($self) = @_;
my $myLength;
my $res;
# Setup TSAPs
my @myS7_PN = unpack( "C25", $self->{S7_PN} );
my $myPDUID = $self->GetNextWord();
$myS7_PN[11] = $myPDUID % 256;
$myS7_PN[12] = ( $myPDUID >> 8 ) % 256;
$self->{S7_PN} = pack( "C25", @myS7_PN );
if ( $self->{TCPClient}->send( $self->{S7_PN} ) == 25 )
# if (send($self->{TCPClient}, $self->{S7_PN}, &MSG_NOSIGNAL)==25)
{
( $res, $myLength ) = $self->RecvISOPacket();
if ( $self->{LastError} == 0 ) {
# check S7 Error
my @myPDUheader = unpack( "C35", $self->{PDU}->{H} );
if ( ( $myLength == 20 )
&& ( $myPDUheader[27] == 0 )
&& ( $myPDUheader[28] == 0 ) ) # 20 = size of Negotiate Answer
{
my @myPDUdata = unpack( "C2", $self->{PDU}->{DATA} );
$self->{PDULength} = $myPDUdata[0];
$self->{PDULength} =
( $self->{PDULength} << 8 ) +
$myPDUdata[1]; # Value negotiated
$self->{MaxReadLength} = ( $self->{PDULength} - 18 );
if ( $self->{PDULength} > 0 ) {
return 0;
}
else {
return $self->SetLastError(&errISONegotiatingPDU);
}
}
else {
return $self->SetLastError(&errISONegotiatingPDU);
}
}
else {
return $self->{LastError};
}
}
else {
return $self->SetLastError(&errISONegotiatingPDU);
}
}
sub getPDULength() {
my ($self) = @_;
if ( $self->{Connected} ) {
return $self->{PDULength};
}
return -1;
}
#-----------------------------------------------------------------------------
sub ReadArea () {
my ( $self, $Area, $DBNumber, $Start, $Amount, $WordLen ) = @_;
my $ptrData = "";
my $Address;
my $NumElements;
my $MaxElements;
my $TotElements;
my $SizeRequested;
my $myLength;
my $res;
my $WordSize = 1;
$self->{LastError} = 0;
# If we are addressing Timers or counters the element size is 2
$WordSize = 2 if ( ( $Area == &S7ClientBase::S7AreaCT ) || ( $Area == &S7ClientBase::S7AreaTM ) );
$MaxElements =
( $self->{PDULength} - 18 ) / $WordSize; # 18 = Reply telegram header
$TotElements = $Amount;
while ( ( $TotElements > 0 ) && ( $self->{LastError} == 0 ) ) {
$NumElements = $TotElements;
$NumElements = $MaxElements if ( $NumElements > $MaxElements );
$SizeRequested = $NumElements * $WordSize;
# Setup the telegram
my @myPDU =
unpack( "C" x &Size_RD, substr( $self->{S7_RW}, 0, &Size_RD ) );
#my $b = join( ", ", unpack("H2 " x &Size_RD,$self->{S7_RW}));
# print "ReadArea: S7_RW :".$b."\n";
#set PDU Ref
my $myPDUID = $self->GetNextWord();
$myPDU[11] = $myPDUID % 256;
$myPDU[12] = ( $myPDUID >> 8 ) % 256;
$myPDU[20] = 0x0a; # Length of remaining bytes
$myPDU[21] = 0x10; # syntag ID
# Set DB Number
$myPDU[27] = $Area;
if ( $Area == &S7ClientBase::S7AreaDB ) {
$myPDU[25] = ( $DBNumber >> 8 ) % 256;
$myPDU[26] = $DBNumber % 256;
}
else {
$myPDU[25] = 0x00;
$myPDU[26] = 0x00;
}
# Adjusts Start
if ( ( $WordLen == &S7WLBit )
|| ( $WordLen == &S7WLCounter )
|| ( $WordLen == &S7WLTimer ) )
{
$Address = $Start;
}
else {
$Address = $Start << 3;
}
#set word length
$myPDU[22] = $WordLen;
# Num elements
$myPDU[23] = ( $NumElements >> 8 )
% 256; # hier ist denke ich ein fehler in der settimino.cpp
$myPDU[24] = ($NumElements) % 256;
# Address into the PLC
$myPDU[30] = ($Address) % 256;
$Address = $Address >> 8;
$myPDU[29] = ($Address) % 256;
$Address = $Address >> 8;
$myPDU[28] = ($Address) % 256;
$self->{PDU}->{H} =
pack( "C" x &Size_RD, @myPDU )
. substr( $self->{PDU}->{H}, &Size_RD );
if ( $main::attr{global}{verbose} >= 5 ) {
$b = join( ", ", unpack( "H2 " x &Size_RD, $self->{PDU}->{H} ) );
main::Log3 (undef, 5, "TCPClient ReadArea (IP= " . $self->{Peer} . "): $b");
}
$b = substr( $self->{PDU}->{H}, 0, &Size_RD );
if ( $self->{TCPClient}->send($b) == &Size_RD )
{ #Achtung PDU.H ist größer als &Size_RD
# if (send($self->{TCPClient}, $b, &MSG_NOSIGNAL)== &Size_RD) #Achtung PDU.H ist größer als &Size_RD
( $res, $myLength ) = $self->RecvISOPacket();
if ( $self->{LastError} == 0 ) {
if ( $myLength >= 18 ) {
@myPDU = unpack( "C" x &Size_WR, $self->{PDU}->{H} );
if ( ( $myLength - 18 == $SizeRequested ) ) {
#response was OK
$ptrData =
substr( $self->{PDU}->{DATA}, 0, $SizeRequested )
; # Copies in the user's buffer
}
else { # PLC reports an error
if ( $myPDU[31] == 0xFF ) {
my $b = join(
", ",
unpack(
"H2 " x $myLength,
$self->{PDU}->{H} . $self->{PDU}->{DATA}
)
);
main::Log3 (undef, 3, "TCPClient ReadArea error (IP= " . $self->{Peer}. ") returned data not expected size: $b");
}
else {
my $b = join(
", ",
unpack(
"H2 " x (
length( $self->{PDU}->{H} ) +
length( $self->{PDU}->{DATA} )
),
$self->{PDU}->{H} . $self->{PDU}->{DATA}
)
);
main::Log3 (undef, 3,
"TCPClient ReadArea error (IP= "
. $self->{Peer}
. ") returned data not OK: $b");
}
$self->{LastError} = &errS7DataRead;
}
}
else {
$self->{LastError} = &errS7InvalidPDU;
}
}
}
else {
$self->{LastError} = &errTCPDataSend;
}
$TotElements -= $NumElements;
$Start += $NumElements * $WordSize;
}
return ( $self->{LastError}, $ptrData );
}
#-----------------------------------------------------------------------------
sub WriteArea {
my ( $self, $Area, $DBNumber, $Start, $Amount, $WordLen, $ptrData ) = @_;
my $Address;
my $NumElements;
my $MaxElements;
my $TotElements;
my $DataSize;
my $IsoSize;
my $myLength;
my $Offset = 0;
my $WordSize = 1;
my $res;
$self->{LastError} = 0;
# If we are addressing Timers or counters the element size is 2
$WordSize = 2 if ( ( $Area == &S7ClientBase::S7AreaCT ) || ( $Area == &S7ClientBase::S7AreaTM ) );
$MaxElements =
( $self->{PDULength} - 35 ) / $WordSize; # 35 = Write telegram header
$TotElements = $Amount;
while ( ( $TotElements > 0 ) && ( $self->{LastError} == 0 ) ) {
$NumElements = $TotElements;
if ( $NumElements > $MaxElements ) {
$NumElements = $MaxElements;
}
#If we use the internal buffer only, we cannot exced the PDU limit
$DataSize =
$NumElements * $WordSize; #<------ Fehler Datasize sollte in Byte sein
$IsoSize = &Size_WR + $DataSize;
# Setup the telegram
my @myPDU =
unpack( "C" x &Size_WR, substr( $self->{S7_RW}, 0, &Size_WR ) );
# Whole telegram Size
# PDU Length
$myPDU[2] = ( $IsoSize >> 8 ) % 256;
$myPDU[3] = $IsoSize % 256;
#set PDU Ref
my $myPDUID = $self->GetNextWord();
$myPDU[11] = $myPDUID % 256;
$myPDU[12] = ( $myPDUID >> 8 ) % 256;
# Data Length
$myLength = $DataSize + 4;
$myPDU[15] = ( $myLength >> 8 ) % 256;
$myPDU[16] = $myLength % 256;
# Function
$myPDU[17] = 0x05;
$myPDU[20] = 0x0a; # Length of remaining bytes
$myPDU[21] = 0x10; # syntag ID
# Set DB Number
$myPDU[27] = $Area;
if ( $Area == &S7ClientBase::S7AreaDB ) {
$myPDU[25] = ( $DBNumber >> 8 ) % 256;
$myPDU[26] = $DBNumber % 256;
}
# Adjusts Start
if ( ( $WordLen == &S7WLBit )
|| ( $WordLen == &S7WLCounter )
|| ( $WordLen == &S7WLTimer ) )
{
$Address = $Start;
}
else {
$Address = $Start << 3;
}
# Address into the PLC
$myPDU[30] = $Address % 256;
$Address = $Address >> 8;
$myPDU[29] = $Address % 256;
$Address = $Address >> 8;
$myPDU[28] = $Address % 256;
#transport size
my $bytesProElement;
if ( $WordLen == &S7WLBit ) {
$myPDU[32] = &TS_ResBit;
$bytesProElement = 1;
}
# elsif ($WordLen == &S7WLWord) { #V2.8 will be send as Bytes!
# $myPDU[32] = &TS_ResInt;
# $bytesProElement = 2;
# }
# elsif ($WordLen == &S7WLDWord) {
# $myPDU[32] = &TS_ResInt;
# $bytesProElement = 4;
# }
elsif ( $WordLen == &S7WLInt ) {
$myPDU[32] = &TS_ResInt;
$bytesProElement = 2;
}
elsif ( $WordLen == &S7WLDInt ) {
$myPDU[32] = &TS_ResInt;
$bytesProElement = 4;
}
elsif ( $WordLen == &S7WLReal ) {
$myPDU[32] = &TS_ResReal;
$bytesProElement = 4;
}
elsif ( $WordLen == &S7WLChar ) {
$myPDU[32] = &TS_ResOctet;
$bytesProElement = 1;
}
elsif ( $WordLen == &S7WLCounter ) {
$myPDU[32] = &TS_ResOctet;
$bytesProElement = 2;
}
elsif ( $WordLen == &S7WLTimer ) {
$myPDU[32] = &TS_ResOctet;
$bytesProElement = 2;
}
else {
$myPDU[32] = &TS_ResByte;
$bytesProElement = 1;
}
if ( ( $myPDU[32] != &TS_ResOctet )
&& ( $myPDU[32] != &TS_ResReal )
&& ( $myPDU[32] != &TS_ResBit ) )
{
$myLength = $DataSize << 3;
}
else {
$myLength = $DataSize;
}
# Num elements
my $nElements = int( $NumElements / $bytesProElement );
$myPDU[23] = ( $nElements >> 8 ) % 256;
$myPDU[24] = ($nElements) % 256;
#set word length
$myPDU[22] = $WordLen;
# Length
$myPDU[33] = ( $myLength >> 8 ) % 256;
$myPDU[34] = $myLength % 256;
$self->{PDU}->{H} = pack( "C" x &Size_WR, @myPDU );
# Copy data
$self->{PDU}->{DATA} = substr( $ptrData, $Offset, $DataSize );
if ( $main::attr{global}{verbose} <= 5 ) {
my $b = join(
", ",
unpack(
"H2 " x $IsoSize,
$self->{PDU}->{H} . $self->{PDU}->{DATA}
)
);
main::Log3 (undef, 5,
"TCPClient WriteArea (IP= " . $self->{Peer} . "): $b");
}
if (
$self->{TCPClient}->send( $self->{PDU}->{H} . $self->{PDU}->{DATA} )
== $IsoSize )
{
# if (send($self->{TCPClient}, $self->{PDU}->{H}.$self->{PDU}->{DATA}, &MSG_NOSIGNAL)== $IsoSize)
( $res, $myLength ) = $self->RecvISOPacket();
if ( $self->{LastError} == 0 ) {
if ( $myLength == 15 ) {
@myPDU = unpack( "C" x &Size_WR, $self->{PDU}->{H} );
if ( ( $myPDU[27] != 0x00 )
|| ( $myPDU[28] != 0x00 )
|| ( $myPDU[31] != 0xFF ) )
{
$self->{LastError} = &errS7DataWrite;
#CPU has sent an Error?
my $cpuErrorCode = $myPDU[31];
my $error = $self->getCPUErrorStr($cpuErrorCode);
my $msg =
"TCPClient WriteArea error: $cpuErrorCode = $error";
main::Log3 (undef, 3, $msg);
}
}
else {
$self->{LastError} = &errS7InvalidPDU;
}
}
}
else {
$self->{LastError} = &errTCPDataSend;
}
$Offset += $DataSize;
$TotElements -= $NumElements;
$Start += $NumElements * $WordSize;
}
return $self->{LastError};
}
#-----------------------------------------------------------------------------
sub getPLCDateTime() {
my ($self) = @_;
my $IsoSize;
my $res;
my $TotElements;
main::Log3 (undef, 3, "TCPClient getPLCDateTime:");
# Setup the telegram
my @myPDU = unpack( "C" x &Size_DT, substr( $self->{S7_RW}, 0, &Size_DT ) );
# Whole telegram Size
# PDU Length
$IsoSize = &Size_DT;
$myPDU[2] = ( $IsoSize >> 8 ) % 256;
$myPDU[3] = $IsoSize % 256;
$myPDU[8] = 0x07; #job type = userdata
$myPDU[9] = 0x00; # Redundancy identification
$myPDU[10] = 0x00;
#set PDU Ref
my $myPDUID = $self->GetNextWord();
$myPDU[11] = ( $myPDUID >> 8 ) % 256;
$myPDU[12] = $myPDUID % 256;
#parameter length
$myPDU[13] = 0x00;
$myPDU[14] = 0x08;
# Data Length
my $myLength = 4;
$myPDU[15] = ( $myLength >> 8 ) % 256;
$myPDU[16] = $myLength % 256;
# Function
$myPDU[17] = 0x04; #read
#set parameter heads
$myPDU[18] = 0x01; # Items count
$myPDU[19] = 0x12; # Var spec.
$myPDU[20] = 0x04; # Length of remaining bytes
$myPDU[21] = 0x11; # uk
$myPDU[22] = 0x47; # tg = grClock
$myPDU[23] = 0x01; #subfunction: Read Clock (Date and Time)
$myPDU[24] = 0x00; #Seq
$self->{PDU}->{H} =
pack( "C" x &Size_DT, @myPDU ) . substr( $self->{PDU}->{H}, &Size_DT );
my $b = join( ", ", unpack( "H2 " x &Size_DT, $self->{PDU}->{H} ) );
main::Log3 (undef, 3,
"TCPClient getPLCDateTime (IP= " . $self->{Peer} . "): $b");
$b = substr( $self->{PDU}->{H}, 0, &Size_DT );
if ( $self->{TCPClient}->send($b) == &Size_DT ) {
# main::Log3 undef, 3,"TCPClient getPLCDateTime request sent";
( $res, $myLength ) = $self->RecvISOPacket();
main::Log3 (undef, 3, "TCPClient getPLCDateTime RecvISOPacket $res");
if ( $self->{LastError} == 0 ) {
if ( $myLength >= 18 ) {
@myPDU = unpack( "C" x $myLength, $self->{PDU}->{H} );
my $b = join(
", ",
unpack(
"H2 " x $myLength,
$self->{PDU}->{H} . $self->{PDU}->{DATA}
)
);
main::Log3 (undef, 3,
"TCPClient getPLCDateTime getPLCTime Result (IP= "
. $self->{Peer} . "): $b");
}
else {
$self->{LastError} = &errS7InvalidPDU;
main::Log3 (undef, 3,
"TCPClient getPLCDateTime errS7InvalidPDU length $myLength");
}
}
}
else {
$self->{LastError} = &errTCPDataSend;
main::Log3 (undef, 3, "TCPClient getPLCDateTime errTCPDataSend");
}
return ( $self->{LastError}, 0 );
}
#-----------------------------------------------------------------------------
sub version {
return "1.1";
}
#-----------------------------------------------------------------------------
sub getErrorStr {
my ( $self, $errorCode ) = @_;
if ( $errorCode == &errTCPConnectionFailed ) {
return "TCP Connection error";
}
elsif ( $errorCode == &errTCPConnectionReset ) {
return "Connection reset by the peer";
}
elsif ( $errorCode == &errTCPDataRecvTout ) {
return "A timeout occurred waiting a reply.";
}
elsif ( $errorCode == &errTCPDataSend ) {
return "Ethernet driver returned an error sending the data";
}
elsif ( $errorCode == &errTCPDataRecv ) {
return "Ethernet driver returned an error receiving the data.";
}
elsif ( $errorCode == &errISOConnectionFailed ) {
return "ISO connection failed.";
}
elsif ( $errorCode == &errISONegotiatingPDU ) {
return "ISO PDU negotiation failed";
}
elsif ( $errorCode == &errISOInvalidPDU ) {
return "Malformed PDU supplied.";
}
elsif ( $errorCode == &errS7InvalidPDU ) { return "Invalid PDU received."; }
elsif ( $errorCode == &errS7SendingPDU ) { return "Error sending a PDU."; }
elsif ( $errorCode == &errS7DataRead ) { return "Error during data read"; }
elsif ( $errorCode == &errS7DataWrite ) {
return "Error during data write";
}
elsif ( $errorCode == &errS7Function ) {
return "The PLC reported an error for this function.";
}
elsif ( $errorCode == &errBufferTooSmall ) {
return "The buffer supplied is too small.";
}
else { return "unknown errorcode"; }
}
sub getCPUErrorStr {
my ( $self, $errorCode ) = @_;
if ( $errorCode == &Code7Ok ) { return "CPU: OK"; }
elsif ( $errorCode == &Code7AddressOutOfRange ) {
return "CPU: AddressOutOfRange";
}
elsif ( $errorCode == &Code7InvalidTransportSize ) {
return "CPU: Invalid Transport Size";
}
elsif ( $errorCode == &Code7WriteDataSizeMismatch ) {
return "CPU: Write Data Size Mismatch";
}
elsif ( $errorCode == &Code7ResItemNotAvailable ) {
return "CPU: ResItem Not Available";
}
elsif ( $errorCode == &Code7ResItemNotAvailable1 ) {
return "CPU: ResItem Not Available1";
}
elsif ( $errorCode == &Code7InvalidValue ) { return "CPU: Invalid Value"; }
elsif ( $errorCode == &Code7NeedPassword ) { return "CPU: Need Password"; }
elsif ( $errorCode == &Code7InvalidPassword ) {
return "CPU: Invalid Password";
}
elsif ( $errorCode == &Code7NoPasswordToClear ) {
return "CPU: No Password To Clear";
}
elsif ( $errorCode == &Code7NoPasswordToSet ) {
return "CPU: No Password To Set";
}
elsif ( $errorCode == &Code7FunNotAvailable ) {
return "CPU: Fun Not Available";
}
elsif ( $errorCode == &Code7DataOverPDU ) { return "CPU: DataOverPDU"; }
else { return "unknown errorcode"; }
}
1;
=pod
=item summary low level interface to S7
=item summary_DE low level interface to S7
=begin html
<p><a name="S7_S7Client"></a></p>
<h3>S7_S7Client</h3>
<ul>
<ul>low level interface to S7</ul>
</ul>
=end html
=begin html_DE
<p><a name="S7_S7Client"></a></p>
<h3>S7_S7Client</h3>
<ul>
<ul>low level interface to S7</ul>
</ul>
=end html_DE
=cut
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