User guide

Using the Modbus Ports
870 USE 101 00 V.2.2
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Section 4.2
Modbus Port 2
Overview
Purpose
Three Momentum components offer this port:
171 CCS 780 00 Processor Adapter
171 CCC 780 10 Processor Adapter
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
Modbus Port 2
Four-Wire Cabling Schemes for Modbus RS485 Networks
Two-Wire Cabling Schemes for Modbus RS485 Networks
Cable for Modbus RS485 Networks
Connectors for Modbus RS485 Networks
Terminating Devices for Modbus RS485 Networks
Pinouts for Modbus RS485 Networks