Table of Contents
Advertisement
MANUEL STA46
1-5
Error response
If the request contains error like address or quantity out of range, the PLC program will generate an
exception response containing the exception code
[Response]
Function Code
Exception Code
Exception Code
01
02
03
1-6
Status counter
Counter
Exception_Counter
RCV_Counter
SND_Counter
ER_RCV_Counter
ER_SND_Counter
JP Viskovic 30/08/2005 OEE-F
Length
1 Byte
1 Byte
ILLEGAL FUNCTION
ILLEGAL DATA ADDRESS
ILLEGAL DATA VALUE
Channel
W491
Keep a record of illegal request
W492
Keep a record of response sent
W493
Keep a record of frame received
W494
Keep a record of socket receive error
W495
Keep a record of socket send error
Data
Function Code + 0x80
01, 02 or 03
Name
Descriptions
Modbus TCP
14
Hide quick links:
Advertisement
Table of Contents
