5.2 Digital Output Interface
5.2.1 Output Interface Definition and Pin Functions
Output port use a 25-pin and 20-pin socket DB head, including the power supply wiring
port. Digital output port pin arrangement as shown:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
OUT_0
OUT_1
OUT_2
OUT_3
P24V
OUT_5
OUT_6
OUT_7
P 24V
OUT_10
OUT_11
OUT_12
OUT_13
P 24V
OUT_14
OUT_15
OUT_16
OUT_17
P24V
OUT_4
OUT_8
SVST_A
EMSST_A
SVST_B
EMSST_B
Figure 5-5 Digital output port
After using the external power supply DC24V IO board power supply, the output pin
5,10,18,23 voltages is 24V, it can be supplied to the external use.
System output signal includes two-way relay contact output, which "SVST_A" and
"SVST_B" as one relay; "EMSST_A" and "EMSST_B" as another relay.