Datasheet

EM111
Specication are subject to change without notice EM111 DS 291015
9
Wiring diagrams
Current (F 315mA)
Fig.1
Open collectors output
Fig.2
The load resistance (Rc) must be designed so that the closed con-
tact current is under 100 mA (V
on
is equal to 1 V dc). DC voltage (V
off
)
must be less than or equal to 80 V.
Vdc Out GND GNDVdc Out
Digital Input
Fig.3
RS485 Modbus communication port
Fig.4
M-Bus communication port
Fig.5
Additional instruments with RS485 are connected in parallel. The
serial output must only be terminated on the last network device
connecting terminals A- and T. For connections longer than 1000 m
use a signal repeater. Maximum 247 transceivers on the same bus.