OBID i-scan
®
Montage / Installation
ID ISC.MR200-A/E
FEIG ELECTRONIC GmbH
Page 51 of 56
M40400-4de-ID-B.doc
E N G L I S H
5.1.1 RS485 (ID ISC.MR200-A)
In the case of the RS485 interface, any necessary termination resistors can be enabled by
inserting jumpers J4, J5 and J6.
Jumper
In
Out
J4
Pull-Up on RS485 - B
without
Pull-Up on RS485 - B
J5
Pull-Down on RS485 - A
without
Pull-Down on RS485 – A
J6
Termination resistor
RS485 - A
⇔
RS485 - B
without
termination resistor
RS485 - A
⇔
RS485 - B
Table 5-2: RS485 termination resistors
Fig. 5-1: RS485 port jumpers
5.1.1.1 Setting RS485 addresses for bus operation
The Reader allows you to assign the required bus address via software.
Addresses are assigned by the host computer. The software is used to assign addresses between
“0” and “254”.
Note:
Since all Readers are factory set with address 0, they must be connected and configured in
succession.
J4
J6
J5
500 Ohm
500 Ohm
100 Ohm