ProSoft Technology PLX3 Series User Manual

MBTCP Protocol PLX3x Series
User Manual Ethernet and Serial Gateways
Page 108 of 218 ProSoft Technology, Inc.
May 26, 2016
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

ProSoft Technology PLX3 Series Specifications

General

Brand	ProSoft Technology
Model	PLX3 Series
Category	Gateway
Language	English