UniMod LTE
9
In the UniMod LTE modem an additional slot is available for another inter-
face module. For this slot the following module types are available (installa-
tion: see page 28):
20mA
(CS, current loop) active (for 4 devices max.) or passive;
if the 20mA interface is active it must be operated either with a load or its
terminals must be short-cut.
RS232
(RxD, TxD, CTS, RTS, GND);
RS485
(2 wires);
RS485
(4 wires);
M-Bus
active (for max. 20 devices);
Please note: All interfaces are internally connected with each other. Therefore all
attached devices receive the same data from the interface. It must be
ensured that never two or more devices send data at the same time.
