n
- 45 -
5.3
Pair-connection Applications
The IS-MS3180 Modbus gateway can be used to create a pair-connection application (as well as
serial-bridge or serial-tunnel), and then route Modbus messages between two serial devices via
TCP/IP, which is useful when connecting Modbus RTU/ASCII devices that do not themselves have
Ethernet capability.
The following are examples of pair-connection tests:
Pair-connection Settings:
Model
Port Settings
(default)
Pair-connection Settings
Baud
Rate
Data
Format
Server
Mode
Remote
Server IP
Remote TCP
Port
(default)
IS-MS3180 #1
115200
8N1
Client
IP Address of IS-MS3180 #2
502
IS-MS3180 #2
115200
8N1
Server
-
-
Note: The Baud Rate and Data Format settings of the client and server (IS-MS3180 #1 and #2) depend on the
COM ports of the PC (or the connected device). The serial port settings between IS-MS3180 #1 and IS-
MS3180#2 can be different.
Step 1: Connecting to a network, PC and Power
1.
Confirm that the IS-MS3180 modules are functioning correctly.
For detailed information regarding how to install, configure and operate your IS-MS3180 series
module, refer to
Chapter 3 “Getting Started”
.
2.
Use a RS-232 to RS-485 Converter to connect the COM1 of Host PC with COM1 of IS-MS3180 #1.
For detailed information regarding RS-422/485 wiring, refer to
Section 2.5 “Wiring Notes for RS-
232/422/485 Interfaces”
.
3.
Connect the Modbus device to COM1 of IS-MS3180 #2.