I/O Mapping an I/OBus Network with Modsoft

Supporting an I/O Map for an I/OBus Network

Introduction The 171 CCS 760 00 and 171 CCC 760 10 Processor Adapters have an I/OBus communication port that enables them to control and communicate with network slave I/O.

If you are using I/OBus to control network I/O, you need to write an I/O Map in your configuration. This section describes the configuration parameters required to support an I/O Map for I/OBus.

I/O MapBy default, 512 words are reserved for I/O Mapping. This may or may not be the Reserved Words appropriate memory allocation to support your I/OBus network. A rule of thumb for

roughly estimating the number of words required for I/O Mapping is:

λ16 words for overhead

λ10 words/module on the network (including both the local and the network I/O)

The idea behind adjusting the memory size is to allow you to completely I/O Map your network while preserving as much user memory as possible for your application program.

Required

Be sure that the following parameters are set on the Configuration Overview

Settings

screen:

 

 

 

 

 

 

 

Parameter

Setting

 

 

 

 

 

 

Processor type

12.0 for a 171 CCS 760 00

 

 

 

lProcessor Adapter

 

 

 

18.0 for a 171 CCC 760 10

 

 

 

Processor Adapter

 

 

 

 

 

 

Number of segments

2

 

 

 

 

 

 

I/O Map reserved words

Enough to support your I/O map

 

 

 

 

 

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Schneider Electric Processor Adapter Supporting an I/O Map for an I/OBus Network, Settings, Screen, Parameter Setting