Interlock with the most upstream zone to get an input to see if is clear and then turn on an output (Wake Up) to tell it to run to accept a new item
Whichever Control Port (Left or Right) is on the Upstream Side of the module will accept a Wake Up signal input on its interlock input Pin 4. If the zone is unoccupied, when a digital signal is applied to Pin 4, the zone will run its motor to accept an item.
- When NOT to use Pin 4 as a Wake Up
Only use the Interlock Pin 4 signal for Wake Up on the most upstream zone of a network. Do not use the Pin 4 signal on any of the other zones on modules with an upstream connection to another ConveyLinx Module – You may get unexpected results because signal may or may not over-ride the status coming from upstream over the network.
- Wake Up Interlock with Handshake
The external controls providing the Wake Up signal to Pin 4 will sometimes also require an output signal from the ConveyLinx Module that will indicate when this upstream zone is occupied in order to implement a handshake. This zone occupied signal is provided by the Control Port’s output signal.
Upstream Control Port Output is OFF and PLC signal to Upstream Control Port Pin 4 is OFF. When Carton 1 reaches PLC connected PEx, the PLC energizes its output signal to Upstream Control Port Pin 4 and Zone 1 Motor starts to run When Carton 1 clears PLC connected PEx, the PLC turns off its output signal to Upstream Control Port Pin 4 When Carton arrives at Zone 1 PE1, the Upstream Control Port Output is ON to indicate that Zone 1 is occupied. The PLC can connect this signal to a digital input to use in its logic to stop its conveyor if another carton arrives at PEx