
B–63323EN/03
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
119
DI (input signal) specifications
(General–purpose input signal)
Contact rating 30 VDC, 16 mA or more
Open circuit intercontact
leakage current
1 mA or less (at 26.4 V)
Closed circuit intercontact
voltage drop
2 V or less
(including cable voltage drop)
Delay Receiver delay: Max. 2 ms
The time required for I/O Link transmission
between the CNC and I/O module (max. 2 ms +
CNC ladder scan cycle) must also be taken into
account.
(Matrix input signal)
Contact rating 6 VDC, 2 mA or more
Open circuit intercontact
leakage current
0.2 mA or less (at 26 V)
Closed circuit intercontact
voltage drop
0.9 V or less (with a current of 1 mA)
Delay The maximum matrix period of 16 ms, the
maximum time of I/O Link transfer between CNC
and I/O module of 2 ms, and the ladder scanning
period (by CNC) must be considered.
NOTE
When detour prevention diodes are used, the voltage drop
across closed contacts indicated above must be
maintained, including the diode voltage drop.
DO (output signal) specifications
Maximum load current in ON state 200 mA or less
(including momentary current)
Saturation voltage in ON state Max. 1 V (when load current is 200 mA)
Withstand voltage 24 V +20% or less
(including momentary values)
Leakage current in OFF state 20 mA or less
Delay Driver delay: Max. 50 ms
The time required for I/O Link transmission
between the CNC and I/O module (max. 2
ms + CNC ladder scan cycle) must also be
taken into account.
NOTE
Ensure that the maximum current per DOCOM pin (DO
power supply pin) does not exceed 0.7 A.