1 | Pow | Power indicator light, always on | twenty one | Vout | The positive pole of the external power supply, the voltage is equal to the input power supply voltage |
2 | Work | Working indicator light, 1 second strobe | twenty two | PGND | DI signal input isolation ground |
3 | Net | reserve | twenty three | DI1 | DI1 signal input |
4 | Recv | reserve | twenty four | DI2 | DI2 signal input |
5 | Send | reserve | 25 | DI3 | DI3 signal input |
6 | -- | reserve | 26 | DI4 | DI4 signal input |
7 | Alarm | Alarm indicator light, cascaded device communication is abnormal and always on | 27 | SW | Dry: Dry contact/PNP signal Wet: NPN signal |
8 | link | Connection indicator, cascaded device plugged in is always on | 28 | RST | reset button |
9 | DI1 | DI indicator | 29 | DO1 | Relay 1 output |
10 | DI2 | DI indicator | 30 | DO1 | Relay 1 output |
11 | DI3 | DI indicator | 31 | DO2 | Relay 2 output |
12 | DI4 | DI indicator | 32 | DO2 | Relay 2 output |
13 | DO1 | DO light | 33 | DO3 | Relay 3 output |
14 | DO2 | DO light | 34 | DO3 | Relay 3 output |
15 | DO3 | DO light | 35 | DO4 | Relay 4 output |
16 | DO4 | DO light | 36 | DO4 | Relay 4 output |
17 | Vin | Power input positive stage | 37 | Dial code | 1-5 means the MODBUS communication address, restart to take effect |
18 | GND | Power input negative | 38 | Dial code | 6-8 Set the baud rate, restart to take effect |
19 | 485A | RS485-A | 39 | M | M port, for upward cascading |
20 | 485B | RS485-B | 40 | S | S port, for cascading down |