UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
www.janitza.de
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8.2 RS-485 interface
The device communicates with the Modbus RTU
protocol via an RS-485 interface (3-pole plug
contact).
Recommended cable type:
·
Unitronic Li2YCY(TP) 2x2x0.22 (Lapp cable)
Connection capacity of the terminal:
·0.2 - 1.5 mm
2
(see the chapter “
Technical Data
”)
e.g.
connection
to the
UMG 604
as a gate-
way
(master)
e.g.
connection
of further
slave devices
RS-485 bus
A
B
A
B
Data GND
Fig.
RS-485 interface, 3-pole plug contact
RS-485 bus
A
B
Data GND
120 Ω
Fig.
RS-485 interface, 3-pole plug contact with termina-
tion resistor (part no. 52.00.008)
NOTE
·CAT cables are not suitable for bus wiring! Use
the recommended cable types (see above).
·A segment of an RS-485 bus structure contains
up to 32 nodes/devices. Connect more than 32
nodes/devices with repeaters.
·The device does not contain an integrated ter-
mination resistor (see section „8.4 Termination
·In an RS-485 bus structure, please observe
the address settings for your master and slave
devices in the respective documentation.
8.1 Connection variants
When connecting the device to a PC, there are
several possibilities:
1. Connection via an interface converter:
8. Connection and PC connections
2. Use of the UMG 96-PA (slave) via a UMG
(master) with gateway functionality (e.g.
UMG 512):
PC with GridVis
®
UMG 512-PRO
as gateway
UMG 96-PA
Slave 1
UMG 96-PA
Slave 2
UMG 103
Slave 3
Ethernet
Modbus
Modbus
Modbus
Ethernet
PC with GridVis
®
UMG 96-PA
USB
RS-485
USB
RS-485
CAUTION
Material damage due to incorrect network
settings.
Incorrect network settings can cause faults
in the IT network!
Consult your network administrator for
the correct network settings for your device.
PC with GridVis
®
UMG 96-PA
RS-232
RS-485
RS-232
RS-485
