Power Supply; Rs485 Interface; Setting The Address (Bus Operation); Setting The Adress Within Siport Systems (Controller Dc2000) - Siemens 6FL7171-8AD Operating Instructions Manual

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5.1.1

Power supply

The power is supplied through terminals [+] and [-]. The unit can run off 12 Volt DC. For DC
voltage supply the polarity is fix!.
NOTE:
The length of cable between the power pack and the reader should be kept as
short as possible. The lead should not be laid directly parallel to other energy
supply and low voltage cables.
5.1.2

RS485 interface

With RS485 data buses, it can be necessary to use terminating resistors. For each
installation, checks should be made as to whether it is necessary to use terminating
resistors. Generally, a terminating resistor is only required at the end of the bus, i.e. on the
last unit. In order to do this, use jumper J1 on reader electronic board.
To operate the bus, you need a central computer with a terminating resistor and active
termination (see Figure 5: Operating a bus with an RS485 interface)
Controller
(with active terminationung)
Figure 5: Operating a bus with an RS485 interface
5.2

Setting the address (bus operation)

5.2.1

Setting the adress within SIPORT systems (Controller DC2000)

Bus operation with up to 4 readers connected to controller DC2000. All card readers are
issued an individual address as shown in Table 2.
DIP 4 DIP 3
off
off
off
off
Table 2: Bus addresses within SIPORT
12 36
Page from
AR 6331-CP
B
A
Without terminating resistor
DIP 2 DIP 1
off off off
off off on
off on off
off on on
AR 6331-CP
Bus adress
0
1
2
3
Operating instructions card reader AR6331-CP / AR6332-CP
Jumper J1
AR 6331-CP
100 Ohm
B A
With terminating resistor
Order no.: A24205-A335-H050