
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B–63783EN/01
84
This section describes the 2A–output DO signal ratings for expansion
module C.
DO (output signal ratings)
Number of points 32 (per module)
On–state maximum
load current
2 A per point
Up to 12 A for the entire module (16 DO points),
including instantaneous changes
Withstand voltage 24 V +20% or lower, including instantaneous
changes
Off–state outflow
leakage current
100 µA or lower
Delay time It is necessary to consider the sum of the I/O Link
transfer time (up to 2 ms) and ladder scan cycle
time (in the CNC).
Turning the on and off power (common to DO points) for the DO points
(output signals)
Turning off (opening) power supply pin DOCOM for the DO points
(output signals) turns off all DO points of each module at one time. The
state of the DO points is as shown below.
DOCOM
DO when the corre-
sponding DO is on
in the sequence
DO when the cor-
responding DO is
off in the sequence
ON
OFF
ON
OFF
ON
OFF
NOTE
If a DO is on in the sequence, the on/off state of the DOCOM
is reflected on that DO as shown in the dotted area. Do not
turn off +24 V supplied to the I/O module during operation.
If it is turned off, an alarm is issued for communication with
the CNC. This +24 V must be turned on at the same time
or before the power to the CNC is turned on. It must be
turned off at the same time or after the power to the CNC is
turned off.
Parallel connection of DO points (output signals)
For the 2A–output module, it is impossible to connect DO points in
parallel. In addition, its DO points cannot be connected in parallel with
those of any other module.
6.3.10
2A–Output DO Signal
Ratings