ProSoft Technology PLX3x Series User Manual

PLX3x Series ♦ Multi-Protocol Gateways MBTCP Protocol
User Manual
ProSoft Technology, Inc. Page 111 of 215
January 25, 2018
6.3.3 MBTCP Error Codes
Standard Modbus Exception Code Errors
These error codes are generated or returned on both the Controller and slave
ports. These codes are the standard Modbus errors.
Code
Description
1
Illegal Function
2
Illegal Data Address
3
Illegal Data Value
4
Failure in Associated Device
5
Acknowledge
6
Busy, Rejected Message
MBTCP Client Specific Errors
These error codes are specific to the MBTCP client.
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
MBTCP Communication Error Codes
The gateway detects these command-specific error codes during initial command
list loading at gateway power-up or reset and are stored in the Command Error
List memory region.
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

ProSoft Technology PLX3x Series Specifications

General

Brand	ProSoft Technology
Model	PLX3x Series
Category	Gateway
Language	English