janitza UMG 604-PRO, User Manual And Technical Data

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UMG 604-PRO
24
7. 2 RS232
You can use an RS232 connection cable to
connect the device to a PC.
The achievable distance between two
devices with RS232 interfaces depends on
the cable used and the baud rate.
The maximum cable length that can be
connected is 30 m!
As a guideline, if the transmission rate is
9600 Baud, a distance of 15 m to 30 m
should not be exceeded.
The permissible ohmic load must be greater
than 3 kOhm and the capacitive load caused
by the transmission line must be lower than
2500 pF.
Fig. Plug arrangement for the PC connection cables
(item no. 08 02 427).
PC
Com1
Fig. Example, connecting a UMG604-PRO to a PC
via the RS232 interface.
7. 3 RS485
The RS485 interface is designed as a 2-pin
plug contact in the UMG 604.
RS485 bus
A
B A
B
B A
Fig. RS485 interface, 2 pin plug contact
RS485 bus
A
B
B A
Fig. RS485 interface, 2-pin plug contact with
termination resistor (item no. 52.00.008).
120Ω