The digital I/O ports (Dig I/O) can be used to exchange digital signals with external instruments, for example, a mass spectrometer. Each port provides:
one digital input
one relay output
Pin | Description — Signal Name |
---|---|
1 | Not used |
2 | Relay output — Relay_NC (Normally Closed contact) |
3 | Ground — GND |
4 | Digital input — Input |
5 | Relay output — Relay_COM COM is the common contact for NO and NC. If the relay is not activated or if the device is turned off, the connection is between COM and NC. If the relay is activated, the connection is between COM and NO. |
6 | Relay output — Relay_NO (Normally Open contact) |
The next table lists the functions assigned to the connector pins and the color of the cable wire connected to each pin.
Pin | Wire Color | Signal Name | Signal Level | Remarks |
---|---|---|---|---|
1 | Pink |
|
| Not used |
2 | Gray | Relay output — Relay_NC | Potential free | Opening contact |
3 | Green | Ground — GND | Ground | Reference potential |
4 | Yellow | Digital input — Input | Input (low active): | Digital input; reference potential is ground. Note the following:
|
5 | White | Relay output — Relay_COM | Potential free | Common contact for NO and NC |
6 | Brown | Relay output — Relay_NO | Potential free | Closing contact |