Beckhoff TX1200, Руководство пользователя

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Function blocks
TX1200 13 Version: 1.0
iErrorId : supplies the command-specific error code (table) or the device-specific error code [ } 14] if the
bError output is set.
cbResponse : the byte length of the response data actually returned in the response buffer.
Error Codes Description
0x8300 Tx error. Timeout error.
0x8301 Tx error. Remote shutdown.
0x8302 Tx error. Internal error.
0x8303 Tx error. Resource error.
0x8305 Tx error. No remote connection.
0x8100 Rx error. Wrong transaction ID.
0x8101 Rx error. Wrong protocol ID.
0x8102 Rx error. Wrong length.
0x8103 Rx error. Exceeding length.
0x8104 Rx error. Wrong unit ID.
Sample of calling the function block in FBD:
PROGRAM MAIN
VAR
fbModbusRequest : FB_ModbusTcpRequest;
bExecute : BOOL;
bExecute : nConnectionPort;
SendBuffer : ARRAY[0..5] OF BYTE := 1,6,64,64,0,0;
ReceiveBuffer : ARRAY[0..255] OF BYTE;
bBusy : BOOL;
bError : BOOL;
nErrId : WORD;
cbReceived : WORD;
END_VAR
In this sample, a rising edge at the bExecute input causes a request to be sent to the remote partner with
network address '172.16.2.209'.
Requirements
Development environment Target platform PLC libraries to include
TwinCAT v2.7.0 and below BC9xxx (165) firmware version >=
0xB6 TcModbusTCPBC.Lb6