
QD1 IO Expansion Module User Manual
14 Document Version V3.0 (2020-08-18)
Figure 2-7 Input circuit diagram of economical QD1
2.4 Digital output (DO)
2.4.1 Modular type
Modular QD1 supports 32- or 16-channel optocoupler-isolated digital output. Each
channel has a rated output current of 200 mA, and the output circuit diagram is shown in
Figure 2-8 Output circuit diagram of modular QD1
2.4.2 Economical type
Economical QD1 supports 16-channel optocoupler-isolated digital output, and a
single slave station can achieve up to 112-channel optocoupler-isolated digital output via
Optocoupler-isolated DI
User port
Controller
User port
Controller
DO
Optocoupler-isolated DO