Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 104)

104 Publication 1753-UM001C-EN-P - March 2010
Chapter 11 Pulse Testing
1753-IB16, 1753-IB8XOB8, and 1753-IB16XOB8 Modules
The 1753-IB16 module has four digital pulse test sources (PO). The
1753-IB8XOB8 and 1753-IB16XOB8 modules have two digital pulse
test sources.
The example below shows 2 pulse test sources connected to the
digital inputs (DI) of the same system. As a result, the connections to
the digital inputs (DI) are monitored..
ATTENTION
Do not use pulsed outputs as safety-related outputs for control
of safety-related actuators.
Emergency OFF 1 Emergency OFF 2
PO 1 2
DI 1 2 DI 3 4