The PLC writes integer values to the ConveyStop Command Register to issue either a Stop Command or a Start Command .
Writing a value of “1” to the ConveyStop Command Register will cause a Stop Command to be issued to the STOP Group. In any module (ERSC or CNIP) that is connected to the PLC, bit10 will be set in their corresponding ConveyStop Status Register.
Before issuing a Start Command, the PLC should first verify that the ConveyStop Status Register is “0” indicating there is not an active STOP condition. One of these conditions is indicated in Bit 10 of the ConveyStop Status Register. So the procedure for issuing a Start Command is:
- Write a 0 to the ConveyStop Command Register
- Verify that the ConveyStop Status Register is equal to 0
- Write a 2 to the ConveyStop Command Register to issue the Start Command
- Wait at least 500 msec and then write a 0 to the ConveyStop Command Register