Read: This function is not defined with groups of output channels. Write: Switch the state of all channels of a group. If any channel is On, and the write value is Off, then all channels will switch off. If any channel is Off, and the write value is On, and if no other signals (mainInhibit, outputInhibit, outputEmergencyOff or outputFailureMaxCurrent) are active, then all channels will switch on. If the write value is resetEmergencyOff, then all channels will leave the state EmergencyOff. A write of clearEvents is necessary before the voltage can ramp up again. If the write value is setEmergencyOff, then all channels will have the state EmergencyOff, which means that the High Voltage will switch off without a ramp and reset of the outputVoltage to null volt. If the write value is disableKILL, then all channels will switch to disableKill (outputStatus outputDisableKill). If the write value is enableKILL, then all channels will switch to enableKill (outputStatus outputEnableKill). If the write value is clearEvents, then all failure messages of the outputStatus will be cleared (all channel events, all module events and the state outputEmergencyOff will be reset). For a detailed description of the different group numbers available look at the outputGroup OID above.