Using the Modbus Plus Ports

Peer Cop, Continued

How Peer Cop

The reception of Peer Cop source data and the delivery of Peer Cop destination

Data Is Sent and

data are handled by the token rotation. The token is always passed to the next

Received

logical device in the network’s address sequence.

 

Because all the Modbus Plus devices monitor the network, any one device can

 

extract the data addressed specifically to it. Likewise, all devices can extract global

 

data. Peer Cop then enables the Modbus Plus device currently holding the token to

 

direct specific data to individual devices and broadcast global data to all devices on

 

the network as part of its token frame.

Effect of Using

 

The net effect of using Peer Cop for data transactions is that each sending device

Peer Cop

can specify unique references as data sources and each receiving device can

 

specify the same or different references as data destinations. When devices

 

receive global data, each device can index to specific locations in the incoming

 

data and extract specific lengths of data from those points. Data transactions

 

therefore happen quickly as part of the token rotation and can be directly mapped

 

between data references in the sending and receiving devices.

 

 

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Schneider Electric Processor Adapter manual How Peer Cop, Data Is Sent, Received, Effect of Using