DCSTM wiring and programming example

This section demonstrates how to program and wire the Guard I/O module and program the instruction in the safety control portion of an application.

This application example complies with ISO 13849-1, Category 4 operation.

In this example, the safety function of the Two-hand Run Station lets the light curtain safety function be muted when both buttons are pressed. This assumes that all user-responsible clauses in EN 574 are met.

This example also uses the inverted output of the Two-hand Run Station to drive the Test Request input of the Dual Channel Input Stop with Test and Mute instruction (DCSTM). This causes the light curtain and its associated input points and wiring to be tested every time both buttons on the Two-hand Run Station are pressed.

Wiring Diagram

Programming Diagram

This programming diagram shows the DCSTM instruction being used with the THRSe instruction.

Ladder Diagram

Module Definition

The following sections provide examples of how to use the programming software to set the Guard I/O module configuration operands.

Rockwell Automation

suggests selecting

Exact Match

for the

Electronic Keying

as shown.

Compatible Match

is also acceptable.

Module Input Configuration

Module Test Output Configuration