9.7
Connecting I/O interfaces
Refer to this section before connecting I/O interfaces to external devices.
Source input
This is an input circuit in which the anode of the photocoupler is the input terminal. Transmit signals from a source (open-
collector) type transistor output, relay switch, etc.
24 V DC, 5 mA
External device
24 V DC
Control
24 V IN
output 1
Control
0 V IN
output 2
Sink input
This is an input circuit in which the photocoupler cathode side is the input terminal. Transmit signals from a sink (open-
collector) type transistor output, relay switch, etc.
24 V DC, 5 mA
External device
Control
24 V IN
output 1
24 V DC
Control
0 V IN
output 2
SDICOM
SDI1A
Approx. 4.4 kΩ
SDI1B
Approx. 4.4 kΩ
24 V DC, 5 mA
SDICOM
SDI1A
Approx. 4.4 kΩ
SDI1B
Approx. 4.4 kΩ
24 V DC, 5 mA
9 USING FUNCTIONAL SAFETY [G] (EXCULUDING MR-J5-_G_-HS_)
9.7 Connecting I/O interfaces
9
469