ProSoft Technology PLX31-EIP-SIE - Manual (Page 108)

MBTCP Protocol PLX3x Series
User Manual Ethernet and Serial Gateways
Page 108 of 218 ProSoft Technology, Inc.
September 17, 2014
6.3.3 MBTCP Error Codes
Standard Modbus Exception Code Errors
Code Description
1 Illegal function
2 Illegal data address
3 Illegal data value
4 Failure in associated device
5 Acknowledge
6 Busy; message was rejected
MBTCP Client Specific Errors
Code Description
-33 Failed to connect to server specified in command
-35 Wrong message length in the response
-36 MBTCP command response timeout (same as -11)
-37 TCP/IP connection ended before session finished
Command List Entry Errors
Code Description
-40 Too few parameters
-41 Invalid enable code
-42 Internal address > maximum address
-43 Invalid node address (<0 or >255)
-44 Count parameter set to 0
-45 Invalid function code
-46 Invalid swap code
Gateway Communication Error Codes
Code Description
-2 Timeout while transmitting message
-11 Timeout waiting for response after request (same as -36)
253 Incorrect slave/server address in response
254 Incorrect function code in response
255 Invalid CRC/LRC value in response