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What do the Modbus error codes for the EGX300 mean?

Published date: 16 August 2019

Issue:
User may experience one of the following error codes when reading modbus registers using the EGX300

Product Line
EGX300

Environment:
Ethernet Gateway

Resolution:
Below is a list of the Modbus error codes for the EGX300.

Resolution:
Below is a list of the Modbus error codes for the EGX300.
 

Error Code
 Modbus Error Description
0x8072
 MODBUS EXCEPTION 01 Illegal function. The function code received in the query is not an allowable action for the server or slave.
0x8073
 MODBUS EXCEPTION 02 Illegal data address. The data address received in the query is not an allowable address for the server or slave.
0x8074
 MODBUS EXCEPTION 03 Illegal data value. A value contained in the query data field is not an allowable value for the server or slave.
0x8075
 MODBUS EXCEPTION 04 Slave device failure. An unrecoverable error occurred while the server or slave was attempting to perform the requested action.
0x8076
 MODBUS EXCEPTION 05 Acknowledge. The server has accepted the request and is processing it, but a long duration of time will be required to do so.
0x8077
 MODBUS EXCEPTION 06 Server device busy. The server is engaged in processing a long-duration program command. The client should retransmit the message later when the server is free.
0x8078
 MODBUS EXCEPTION 07 Negative acknowledge. The slave cannot perform the program function received in the query.
0x8079
 MODBUS EXCEPTION 10 Gateway path unavailable. Usually means that the gateway is incorrectly configured or overloaded.
0x8080
 MODBUS EXCEPTION 11 Gateway target device failed to respond. Usually means that the device is not present on the network.
0x801a
 UNKNOWN ERROR text
0x8005
 INVALID DEVICE ADDRESS ERROR text
0x8006
 INVALID REGISTER ADDRESS ERROR text
0x8009
 BAD CRC ERROR text
0x800a
 UNKNOWN COMMAND ERROR text
0x8019
 TIMEOUT ERROR text

This can be used in conjunction with the PowerLogic Ethernet Gateway EGX300 Reference Guide that is attached to this article, 63230-319-230, for troubleshooting custom web page issues.
 

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