FANUC Power Mate i-MODEL H CONNECTION MANUAL (HARDWARE)

6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B63173EN/03
134
Turning the DO (output signal) power on and off (DOCOM)
All the DO signals of each module can be turned off simultaneously by
turning off (opening) the DO (output signal) power supply pin
DOCOM. Doing so causes the DO signal status to change as shown
below.
DOCOM
ON
OFF
ON
OFF
ON
OFF
When DO is ON in
the sequence
When DO is OFF in
the sequence
NOTE
1 When the DO signal is in the ON state in the sequence, the
ON or OFF state of the DOCOM pin determines the state of
the signal, as shown within the dotted lines in the above
figure.
2 Do not turn off the +24 V supply to the I/O module during this
operation. Turning off the +24 V supply causes a Power
Mate communication alarm. When turning on the power, the
+24 V supply to the I/O module must be started before or at
the same time as the power supply to the Power Mate.
When turning off the power, the +24 V supply to the I/O
module must be stopped after or at the same time as the
power supply to the Power Mate.

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