External IO Connector
The External IO connector is a HD26F – high-density 26 pins female sub-D connector. The connector shell is fitted with 2 UNC4-40 female screw locks.
High-density 26-pin female sub-D connector
(bracket viewed from outside)
External IO pins assignment
Pin # |
Pin name |
Usage |
1 |
GND |
Ground |
2 |
DIN2+ |
High-speed differential input #2 – Positive pole |
3 |
IIN1+ |
Isolated input #1 – Positive pole |
4 |
IIN3- |
Isolated input #3 – Negative pole |
5 |
IIN4- |
Isolated input #4 – Negative pole |
6 |
IOUT2- |
Isolated contact output #2 – Negative pole |
7 |
IOUT4- |
Isolated contact output #4 – Negative pole |
8 |
+5V |
+5V Power output |
9 |
GND |
Ground |
10 |
GND |
Ground |
11 |
DIN2- |
High-speed differential input #2 – Negative pole |
12 |
IIN1- |
Isolated input #1 – Negative pole |
13 |
IIN2+ |
Isolated input #2 – Positive pole |
14 |
IIN3+ |
Isolated input #3 – Positive pole |
15 |
IIN4+ |
Isolated input #4 – Positive pole |
16 |
IOUT2+ |
Isolated contact output #2 – Positive pole |
17 |
IOUT4+ |
Isolated contact output #4 – Positive pole |
18 |
GND |
Ground |
19 |
DIN1- |
High-speed differential input #1 – Negative pole |
20 |
DIN1+ |
High-speed differential input #1 – Positive pole |
21 |
IIN2- |
Isolated input #2 – Negative pole |
22 |
IOUT1- |
Isolated contact output #1 – Negative pole |
23 |
IOUT1+ |
Isolated contact output #1 – Positive pole |
24 |
IOUT3- |
Isolated contact output #3 – Negative pole |
25 |
IOUT3+ |
Isolated contact output #3 – Positive pole |
26 |
+12V |
+12V Power output |