ADF Web HD67508-A1-232 User Manual page 18

D11116 - ADF 485
Example 1:
If you want, from TCP network, write a data it the RTU
network on the device at:
Address 5;
Through Gateway WORD 100 (Address RTU);
Address TCP 1000.
In the above scenario:
Specify the type of data between:
Coil Status (bit in read write);
Input Status (bit in read);
Holding Register (word in read and write);
Input Register (word in read).
From the side of the MODBUS TCP:
Address of data to read.
From the side of the MODBUS RTU:
Address of the device to interrogate;
Address of data to read on device.
Note:
If the RTU slave responds with an exception, that exception code will be transmitted to the TCP Master. If the RTU slave does not
respond within the estimated time defined by the Timeout parameter, an exception response will be given on TCP side: error code $0B.
User Manual Modbus TCP Slave / Modbus Master
Document code: MN67508_ENG
Return to the gateway, from the variable
100 of the device in address 5
Request by the gateway, from the "holding register" in
address 100 to the device in address 5
Modbus RTU up to 115200
HD67508
Return to the TCP Master, from the variable 100 of the
Revision 1.014 Page 18 of 25
(step 3)
(step 2)
Module Modbus RTU
Slave
Address 5
Request to the gateway, from the "holding
register" in address 1000 (step 1)
device in address 5 (step 4)
Modbus TCP 10/100
Modbus TCP
Master