Upon receipt of a GPO control command the GC-32 will turn on or off the specified GPO, or turn all GPOs on or off as specified within the command. The GPO command also details the time that the GPO will stay on. A time of zero (0) will latch the GPO on. Any other time 1 – 255 (x 10ms) will cause the GPO to turn off when the specified time in the command elapses.
A GPI change of state notification will be sent automatically when a GPI change of state is detected. The notification may include one or more GPIs and will contain the affected GPI and its current state. The GPI state is communicated by an incrementing count. An even count indicates that the GPI is off. An odd count indicates that t GPI is on. The count will wrap from its maximum value to zero. If a client is not connected, GPI notifications for that connection will be discarded.