Function Expansion Unit FE260
Elster-Instromet GmbH
17
3.5.4 Connection of a CL modem
The following volume correctors can be connected to an FE260 with CL interface:
•
EK260s with software version from 2.40 onwards as well as other volume correctors of
the LIS-200 range from the year of manufacture 2006 onwards can be operated without
restriction.
•
EK260s with software version from 2.02 to 2.22 as well as other volume correctors of
the LIS-200 range from year of manufacture 2005 onwards can be operated only with
restrictions. Regarding this refer to Chapter 4.3.1, page 21.
•
Older EK260s cannot be called via a CL modem.
Apart from the FE260, other devices ("bus devices") with the CL interface can also be
simultaneously connected to a CL modem. The number of devices that can be connected
depends both on the CL modem and also on the connected devices:
The sum of the voltage (in volts) required by the connected devices must not be greater
than the driver rating of the CL modem. The CL interface of the FE260 requires 3 V.
Wiring diagram:
FE260
CL modem
b2
TX+
*
a2
TX–
*
not
connected
CL (+)
*
CL +
CL (–)
*
CL –
other device
CL
+
CL
–
(other devices as equired)
other device
CL
+
CL
–
The sequence of the devices (incl. the FE260) connected to the CL modem is freely
selectable.
