Engine 2014: Electricity

1. A a trigger output occurs once during one cycle of the PLC program by means of the cycle control internal relay
2. B a trigger output occurs once during one cycle of the PLC program by means of the cycle control electromagnetic relay
3. C a trigger output occurs repeatedly during one cycle of the PLC program by means of the cycle control internal relay
4. D a trigger output occurs repeatedly during one cycle of the PLC program by means of the cycle control electromagnetic relay

Tip: press A-D to answer