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GuardPLC™ 1600 Controllers

4. Release the latch to lock the device onto the rail.

TIP

Connecting the GuardPLC 1600

Connections for Safety-Related Communications

The controller has four 10/100BaseT, RJ-45 connectors to provide communications

via GuardPLC Ethernet to distributed I/O and other GuardPLC controllers, OLE for

Process Control (OPC) servers, and with the programming software. Connectors 1

and 2 are located on the bottom side on the left. Connectors 3 and 4 are located on

the top side on the left. All four connectors and the GuardPLC processor are

connected together by an internal Ethernet switch. The switches are auto-detect.

Either cross-over or straight-through Ethernet cabling can be used.

Star or line configurations are available. Make sure that a network loop is not

generated. Data packets must only be able to reach a node via a single path.

OPC Server

The GuardPLC 1600 is an OPC client. An OPC server, catalog number 1753-OPC, is

available from Rockwell Automation and allows PC applications to read and write

data to and from the GuardPLC.

MAC Address

The Media Access Control (MAC) Address of the controller can be found on the

label positioned over both lower RJ-45 connections.

Connections for Non-Safety-Related Communications

Three 9-pin D-shell connectors are located on the front of the controller, providing

the following communications:

Designation

COMM1 (RS-485)

COMM2

COMM3 (RS-485)

Publication 1753-IN001B-EN-P - March 2004

To remove the controller from the DIN rail, insert a flathead

screwdriver into the gap between the housing and the latch

and pull the latch downward as you lift the controller off of

the rail.

Function

Modbus Slave (1753-L28BBB-M)

Profibus-DP-Slave (1753-L28BBB-P)

Not Used

GuardPLC ASCII Protocol