Determining Total Connection Requirements - Allen-Bradley ControlLogix User Manual

Determining Total
Connection Requirements
Connection Type
local I/O module
remote I/O module (direct connection only)
1756-MO2AE servo module
local 1756-CNB module
remote 1756-CNB module through local
1756-CNB module
1756-DHRIO module
1756-ENET module
1756-DNB module
Universal Remote I/O logical racks or chassis
of less than logical rack
produced tag
consumed tags
block-transfer messages
other messages
The Logix5550 controller supports 250 connections. Use the following
table to tally connection requirements for a Logix5550 controller.
produced tag
number of consumers
Allocating Communication Connections
Module Connections
Quantity per Module
1
1
3
0
1
1
0
2
1
1
1
1
1
1
A-9
Total
Connections
Total
1756-6.5.3 - December 1999