Manual Datafox ZK-MasterIV
A single device can be connected to the
PC directly via the RS232-interface (po-
sition
1
in figure
and
). The cable
must not be longer than 15 m. Use a
RS232 cable with a 1:1 configuration, cor-
responding to Datafox item no. 20010, as
connecting cable.
Figure 11: Connection of the ZK-MasterIV with the PC about RS232
3.5.1.3 Conversion of RS232 to RS485
Up to 31 devices can be connected to a serial interface of a PC or server via a RS232-to-RS485 converter.
In this case the devices are connected via a RS485 bus. The power supply can be established using a
central power supply unit with adequate power. Note that the fall of voltage is dependent on wire cross-
section and length.
The pin assignment of the converter will be demonstrated using the Datafox converter RS232/485 (small)
as example. Gather the wiring of the RS485 bus from the following examples.
Caution:
Pay attention to the hardware version given in the examples. It is a precondition
for the prevailing example.
Version: 04.01.07.00
Page
25
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