ET-2200 Series Ethernet I/O Modules
Copyright © 2020 ICP DAS CO., Ltd. All Rights Reserved.
-138 -
A.3 Why is the Host computer unable to ping or
search for the ET-2200 module?
The Host computer can only establish a communication with a module through specific ports.
Confirm with your network administrator that access to UDP Port 7, Port 57188 and Port 54321 is
not being denied by another network device.
The following provides more detailed information related to TCP/UDP ports:
TCP Port:
Port Number
Description
80
HTTP (Hyper Text Transport Protocol)
502
Modbus Data Port
UDP Port:
Port Number
Description
7
Echo (Ping)
57188
UDP Search Request
54321
UDP Search Response
