Processor Adapter User Guide

Using the Modbus Ports
870 USE 101 10 V.2 119
Section 4.2
Modbus Port 2
Overview
Purpose Five Momentum components offer this port:
l 171 CCS 780 00 Processor Adapter
l 171 CCC 780 10 Processor Adapter
l 171 CCC 980 20 Processor Adapter
l 171 CCC 980 30 Processor Adapter
l 172 JNN 210 32 Serial Option Adapter
This section describes the port and provides guidelines for Modbus RS485
networks.
In This Section This section contains the following topics:
Topics Page
Modbus Port 2 120
Four-Wire Cabling Schemes for Modbus RS485 Networks 123
Two-Wire Cabling Schemes for Modbus RS485 Networks 126
Cable for Modbus RS485 Networks 129
Connectors for Modbus RS485 Networks 132
Terminating Devices for Modbus RS485 Networks 134
Pinouts for Modbus RS485 Networks 135