
B-63943EN/02 8.CONNECTION TO FANUC I/O Link
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NOTE
When DO is on in the sequence, the ON/OFF state
of DOCOM is directly reflected in the DO state as
indicated above by the dashed box. The +24 V
signal to be supplied to the I/O module must not be
turned off during operation. Otherwise, a CNC
communication alarm is issued. Ensure that +24
V is supplied either when or before the power to
the CNC is turned on, and that +24 V is removed
either when or after the power to the CNC is turned
off.
Parallel DO (output signal) connection
A DO load current of twice the level can be obtained by connecting
DO points in parallel and exercising ON/OFF control at the same time
in the sequence. Namely, the maximum load current per DO point is
200 mA. By connecting two DO points in parallel and turning on the
two DO points at the same time, 400 mA can be obtained. In this
case, however, the leakage current is doubled up to 40 mA when the
DO points are turned off.
DOCOM
CB150(01),(33)
DV
+24 V regulated
power supply
+24V 0V
Relay
DV