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Chapter 1 Introduction
1-2
1.1.2
Diagnostic Digital Output Module
Diagnostic digital output module outputs output signal via the relay to the outside.
It has a diagnostic function of the
internal signal and wire break detection for each output signal
.
Diagnositic
signals are displayed on the device of the CPU module, it can be used in the PLC program.
XG5000
XGT CPU
XG5000 I/F
Program
PLC CPU I/F
Display LED
Relay
Drive
Circuit
SHUNT
Broken Wire
Detection Circuit
LOAD
Out
COM
+ -
XGQ-RY1D
Internal Signal
Diagnosis Circuit
[Figure 1.2] Diagnostic digital output module system
configuration
Digital output module provides diagnostic functions of the following two.
1) Interal output signal diagnosis : Diagnosing whether internal
output signal circuit is operating property.
2)
Wire break detection
: Diagnosing whether the disconnection of the external wiring connected to the relay.