Rockwell Automation 20-COMM-ER 20-COMM-ER Dual-Port EtherNet/IP Communication Adapter User Manual - Manual (Page 38)

38 Rockwell Automation Publication 20COMM-UM015B-EN-P - July 2013
Chapter 3 Configuring the Adapter
Because the adapter transmits peer messages when a change-of-state
condition occurs, minimum and maximum intervals are required.
– The minimum interval ensures that the adapter does not transmit
messages on the network too often, thus minimizing network traffic.
Set it with Parameter 54 - [Peer Out Time].
– The maximum interval ensures that the adapter transmits messages
often enough so that the receiving adapter(s) can receive recent data
and verify that communications are working or, if communications
are not working, can timeout. The maximum interval is the value of
Parameter 54 - [Peer Out Time] multiplied by the value of
Parameter 55 - [Peer Out Skip].
In the example below, the minimum interval is set to 2.00 seconds
(Parameter 54 - [Peer Out Time]), and the maximum interval is set to
4.00 seconds (2.00 x ‘2’ setting of Parameter 55 - [Peer Out Skip]).
5. Set Parameter 53 - [Peer Out Enable] to ‘1’ (On).
The adapter will transmit the data selected in Parameters 51 - [Peer A
Output] and 52 - [Peer B Output] to the network. Another adapter
must be configured to receive the peer I/O data.
Setting the Adapter to Receive Peer-to-Peer Data
1. Verify that Parameter 49 - [Peer Inp Enable] is set to ‘0’ (Off ).
This parameter must be Off while you configure the peer input
parameters.
2. Set Parameters 44 - [Peer Inp Addr 1] through 47 - [Peer Inp Addr 4] to
the IP address of the node from which you want to receive data.
Port 5 Device
20-COMM-ER
Parameter #: 54
Peer Out Time
2.00 s
0 <> 10.00
Port 5 Device
20-COMM-ER
Parameter #: 55
Peer Out Skip
2
1 <>16
Default = 10.00 s Default = 1
Value Setting
0
Off (Default)
1 On
Port 5 Device
20-COMM-ER
Parameter #: 49
Peer Inp Enable
0
Off