Function Expansion Unit FE260
14
Elster-Instromet
GmbH
3.4 Digital Outputs A1 to A4
The terminals “
A1” to “A4”
are individually electrically isolated digital outputs which pass
on the incoming signals on “DA1” to “DA4” (pulse or message signals) from the volume
corrector unmodified with respect to time. Due to the approved electrical isolation, any
devices without Ex approval can be connected to A1 to A4, provided they do not exceed
the limits quoted in the chapter “Technical Data”.
3.5 Modem
On request, the FE260 can be fitted with an integral modem or a connection for a separate
modem in order to read out the data from the connected volume corrector by remote data
transmission. Various modems are possible.
For data transfer via the FE260 the EK260 requires at least the software version 2.02.
3.5.1 Integral standard modem or ISDN modem
The standard modem is used for connection to the analogue telephone network (TAE
subscriber socket, not ISDN). With the FE260 with integral standard modem, the
connection cable with a TAE subscriber plug is included in the supplied items.
The ISDN modem is used for connection to the digital telephone network (ISDN). With the
FE260 with integral standard modem, the connection cable with a TAE subscriber plug is
included in the supplied items.
The modem cable is passed through the smaller plastic gland at the top centre ( “b” in
Fig. 4, page 9).
In both cases the connection is made according to the following configuration:
Wire colour
Terminal *
White
LA
RA
a
RX-
Brown
LB
RB
b
RX+
Pink
LA1
TA
a2
TX-
Grey
LB1
TB
b2
TX+
* The terminal labelling can be implemented as in the left or right columns.
