User's Manual

Figure 5: Example of connecting multiple FP rails to DECT Messenger
The connection between the DECT Messenger PC and the first rail is achieved by means of
V.24. This means that the maximum cable length is determined by the V.24 characteristics and
the cable type.
If you have more than one rail (only available on a project basis), the connection between the
rails and therefore the connection between the FP- 1000 and FP-1001 modules is achieved
by means of an RS-485 connection. This is a 4–wire bus connection that allows a maximum
distance of approximately 1000 meters.
Instead of using an FP1000 module as Controlling Module on a rail, you can use the FP-1601
module. The FP-1601 module has an Ethernet interface to DECT Messenger instead of the
V.24 interface. However, this module is not supported in the standard DECT Messenger
product range; it is only supported on a project basis.
Preparing external devices
22 DECT Messenger Installation and Commissioning — Book 1 March 2012
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