# Prerequisites for test and validation of FlexSystem

Make sure that all equipment is in place. Pay special attention to the following:

- The first FlexCarrier have an e-stop entry plug connected.

- The daisy chained FlexCarriers have a bypass plug connected.

- The e-stop button is a breaking model (N.C. Contacts) and that it is connected to the e-stop entry plug

- The reset button is of a closing model (N.O. Contacts) and that it is connected to the e-stop entry plug.

- Make sure that the screws on the terminal block are securely tightened, to prevent cables from disconnecting.

- All FlexCarriers are fully populated, no empty slots are allowed. If there is an empty slot equip it with a FlexBlank module.

- Connect all FlexCarriers together with FlexControl cables, pay attention to the IN and OUT markings on the FlexCarriers.

- The first and last FlexCarrier in the daisy chain should only have one FlexControl cable connected.

- That you have access to the FlexSystem web GUI, Reports > Events > View all events. All alarms are shown in the Events list.