Jeti/O 6510 Modbus/Tcp Address Mapping - Korenix JetI/O 6510 User Manual

5.1.4 Exception Response
If an error occurs, the slave sends an exception response message to master consisting of
the slave address, function code, exception response code and error check field. In an
exception response, the slave sets the high-order bit (MSB) of the response function code
to one. The exception response codes are listed below.
Code
01 Illegal Function
02 Illegal Data Address
03 Illegal Data Value
04 Slave Device Failure
05 Acknowledge
06 Slave Device Busy
07 Negative Acknowledge
08 Memory Parity Error
5.2

JetI/O 6510 Modbus/TCP Address Mapping

Note: Some of the results are using Hex (Ex: FF00H) mode, Signed (-1) mode... or others
mode. This result depends on the value of the address. There are two types Modbus/TCP
addresses. The protocol address is an address from 0000 to the last address of the function
code you choose. The PLC address is the fixed address number of the function code. This is
also defined in Modbus/TCP protocol. Please choose the type your application uses.
Should you encounter problem on reading this, please contact our technical support engineer,
korecare@korenix.com
JetI/O 6510 Common Register Map (Holding Registers, Function Code = 03)
Protocol
Address Address
(Decimal)
(Hex)
0000
0001 40002
Name
The message function received is not allowable
action.
The address referenced in the data field is not valid.
The value referenced at the addressed device
location is no within range.
An unrecoverable error occurred while the slave
was attempting to perform the requested action.
The slave has accepted the request and processing
it, but a long duration of time will be required to do
so.
The slave is engaged in processing a long-duration
program command.
The slave cannot perform the program function
received in the query.
The slave attempted to read extended memory, but
detected a parity error in the memory.
PLC
Access
40001 R/
W
R/W
Descriptions
Description
(Read/Write)
enable/disable
R/W:AABB
AABB:0000H (disable)
AABB:FF00H (enable)
(Read/Write) Host Watch-dog cycle
count
Host Watch-dog
39