Fig. 15 Permitted Cable Length; Fig. 16 Cable Routing - Beckhoff EL1904 Operating Instructions Manual

Operation
5.2.4.5 Signal cables
Permitted cable length
Fig. 15: Permitted cable length
When connecting a single switching contact via its own continuous cabling (or via a non-metallic sheathed
cable), the maximum permitted cable length is 100 m.
The use of contact points, connectors or additional switching contacts in the cabling reduces the maximum
propagation.
Cable routing
Fig. 16: Cable routing
34 Version: 3.0.0 EL1904