Rockwell Automation 1757-SWKIT5000 ProcessLogix R500.1 Installation and Upgrade Guide - Manual (Page 255)

Publication 1757-IN500A-EN-P - September 2002
Performance and Capacity Specifications 11-15
Controller Communications
With the addition of the 1757-FIM, which uses CDA for communications, the
terms “1757-PLX52 Controller” and “CPM” refer not only to the CPM, but
also to the 1757-FIM, if not explicitly noted. For example, the Maximum Total
Parameter Access Response Rate to the Server from all Controllers combined
is the total response rate from all 1757-PLX52s and 1757-FIMs in the system
combined.
• Each 1757-PLX52 Controller can be the initiator of up to 5 peer-to-peer
connections to other 1757-PLX52 Controllers.
• Each 1757-PLX52 Controller can be the target of up to 5 peer-to-peer
connections from other 1757-PLX52 Controllers.
Table 11.K 1757-PLX52 Controller Communications Performance
1757-PLX52 Controller Communications Performance
PPS = Average Parameters per Second
Overall Communications Performance per ProcessLogix Server 50 ms CEE 5 ms CEE
Maximum Total Parameter Access Response Rate to the Server from all 1757-PLX52s and
1757-FIMs Controllers combined.
(Includes Display updates, Fast/Slow History, Excel I/ODBC Exchange, and CB Monitoring)
4000 PPS 4000 PPS
Overall Communications Performance per 1757-PLX52/1757-FIM 50 ms CEE 5 ms CEE
Maximum Total Parameter Access Response Rate
Includes all Server Data Requests and peer communications, including other 1757-PLX52s and 1757-FIMs.
2000 PPS 2000 PPS
1757-PLX52 to 1757-PLX52 peer to peer Communications Performance per 1757-PLX52 on
Supervisory Control Network 50 ms CEE 5 ms CEE
Maximum Initiator Node Pull/Get Request Rate to all target nodes.
(Based on the number of requests for peer data and the peer update rate.)
The 1757-FIM from 1757-PLX52 is Pull and is fixed at 200ms. The 1757-PLX52 from 1757-FIM is
Pull and published on receipt by the 1757-FIM from FFD.
500 PPS 500 PPS