Inhibit output signals are used to control the enable/inhibit function of a motor driver. When inhibited, the connected motor is de-energized and can turn freely. These open-collector inhibit signals have high current sink capability and can directly drive most motor driver inhibit input circuits.
For more information about these signals, please check out the following link:
http://digital.ni.com/express.nsf/express?openagent&code=e020137