72 Rockwell Automation Publication 1756-UM022D-EN-P - May 2017
Chapter 4 Communicate over Networks
ControlNet Communication Example
This example illustrates the following:
• GuardLogix controllers can produce and consume standard or safety
tags between each other.
• GuardLogix controllers can initiate MSG instructions that send/receive
standard data or configure devices.
(1)
• The 1756-CN2 module can be used as a bridge, letting the GuardLogix
controller produce and consume standard and safety data to and from I/
O devices.
• The personal computer can upload/download projects to the
controllers.
• The personal computer can configure devices on the ControlNet
network, and it can configure the network itself.
Figure 16 - ControlNet Communication Example
(1) The 1734-ACN adapter does not support POINT Guard Safety I/O modules.
ControlNet Connections for Distributed I/O
To communicate with distributed I/O devices over a ControlNet network, add
a ControlNet bridge, a ControlNet adapter, and I/O devices to the controller’s
I/O Configuration folder.
(1) GuardLogix controllers do not support MSG instructions for safety data.
ControlNet
Distributed I/O
1756-CN2 Module (as
an Adapter) with
1756 I/O Modules
1794-ACN15 Adapter with
1794 I/O Modules
Personal
Computer/
Workstation
GuardLogix Controller with
1756-CN2 Module
GuardLogix Controller
with 1756-DNB Module
1734-ACNR Adapter with
1734 I/O Modules
(1)
PanelView™ Terminal
PLC-5
®
/40C Controller
PowerFlex 700S
AC Drive with
DriveLogix
Software
1756-DNB Module
to DeviceNet Network
with Safety I/O
to DeviceNet Network
with Safety I/O
Compact GuardLogix Controller with
1768-CNB Module
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