Rockwell Automation 440R MSR300 Modular Safety Control System - Manual (Page 26)

MSR300 Safety System Manual
Rockwell Automation
MSR300 Manual.doc Pg 26 of 85
4.1.6 Input Fault Logging
If inputs are wired for simultaneity monitoring, the following events are registered as faults
and stored in EEPROM:
• Simultaneity time limit is exceeded.
• Not all channels change state as required if input is cycled
• The reset switch is closed while not all channels of at least one input are in the
correct state for either “on” or “off”.
The faults can be cleared by opening and closing the circuits of all channels of one input
simultaneously. If the faults are not cleared, the MSR310 indicates this on the next power
up. The faults can even then be cleared by opening and closing the circuits of all
channels of the faulty input simultaneously.
4.1.7 Serial Communication Interface Connections
The MSR310 is equipped with two RS232 serial data interfaces: one for bi-directional and
one for uni-directional communication mode. The interface connections are illustrated
below.
TxD1
RxD1
GND
RS-232
Bi-
directional
TxD2
GND
RS-232
Uni-
directional
Serial data communication protocol details (uni-directional and bi-directional) are given in
Chapter 9, at the end of this document.