Masters and Slaves Section 4-1
48
4-1-2 C500 Slave
Switch Cover
Transmission
terminals
RUN Output
ON while PC is in RUN or
MONIT
OR mode and no
transmission error exists;
otherwise, OFF
.
Mounting screw
Used to mount Slave
to Backplane.
Slave connector
Used to connect Slave
to Backplane.
Mounting screw
Used to mount slave to
Backplane.
Indicators
Indicators
TR/ERR Flashes during normal transmission.
Lights when on standby or for transmission errors.
Goes out for CPU Unit errors (via watchdog timer monitoring).
ERR Lights for I/O bus errors at Slave or when PC detects discrepancy
in inputs and outputs connected to Slave.
Remains unlit during normal Slave I/O operation.
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