Option Adapters

Section 2.1

Introducing the Momentum Option Adapters

Basic Features of Option Adapters

Introduction

This section describes the basic features of all Option Adapters:

 

λ

Batteries

 

 

 

λ A time-of-day (TOD) clock

 

λ

Communication port(s)

Batteries

 

 

 

The batteries back up the CPU’s user program and state RAM.

Time-of-Day

 

 

 

The time-of-day clock allows you to use the date and time as an element in your

Clock

user program.

 

 

Communication

 

 

 

The three Momentum Option Adapters are distinguished by the communications

Ports

ports they offer, as shown in the table below:

 

 

 

 

 

Option Adapter

Communication Port(s)

 

 

 

 

 

 

 

172

JNN 210 32

Software-selectable RS232/RS485 serial port

 

 

 

 

 

 

 

172

PNN 210 22

One Modbus Plus port

 

 

 

 

 

 

 

172

PNN 260 22

Two Modbus Plus ports for a redundant (back-up) cable run

 

 

 

 

 

 

 

 

 

 

 

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Schneider Electric Processor Adapter Section Introducing the Momentum Option Adapters, Basic Features of Option Adapters