GPIO overview

NION and CAB products include a versatile GPIO (General Purpose Input Output) system at the rear for terminating external logic, controls, relays and other external systems. Each control pin is supported by NWare for configuration, control and monitoring. Any combination of control pins may be used simultaneously, regardless of the configuration.

Caution: The pin assignments for the GPIO ports on the NION and CAB devices are not the same. Please be sure to check the documentation carefully when connecting devices to the ports.

In this section

Configurable general purpose ports (8 control pins)

Contact closure circuits

High current power output

See also

Serial communications

Technical specifications

Technical Support

Configurable general purpose ports (8 control pins)

These ports can be configured as follows:

Digital output

2.5V high level (LVTTL) short circuit current 1.4mA.

High current digital output

Voltage is as supplied by external DC power (Ext Pwr connector). Absolute max. current draw 0.5A per I/O. Total limited by external PSU.

Not available if using PoE.

Digital input

2.5V high level (LVTTL) with reverse voltage and transient protection.

Analog input

10-bit resolution, 12V full-scale, reverse voltage and transient protection.

Contact closure circuits

Two user-controllable contact-closure circuits. Max voltage 30V DC, max current 1A.

One fault indicator contact closure circuit. Max voltage 30V DC, max current 1A.

High current power output

Voltage is as supplied by external DC power (Ext Pwr connector). Absolute max. current draw 0.5A per I/O. Total limited by external PSU.

Not available if using PoE.

A ground pin is available on the left of the connector block if required.

Caution: If the Ext Pwr connector is used, the voltage available via the DC supply output connector (marked DC Out) will be the same as the voltage supplied via the Ext Pwr connector. Equipment connected to the DC Out connector must be compatible with the supplied voltage.

Note: The DC Out connector cannot be used when the CAB 8n is powered using PoE.