Terminating resistors: dip switch 8 – Burkert Type 8640 User Manual
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51
BusModuleRioSlave(RIO/VA)
Halved inputs mode
In halved inputs mode every second input is skipped. Only the inputs 1, 3, 5, ... are transmitted, so for 32 physi-
cally existing inputs only 2 bytes are needed.

Extension module
inputs
16
15
14
13 12 11 10
9 8 7
6
5 4 3
2
1
Power supply earth
Power supply +24 V
Inputs
8
7
6
5
4
3
2
1
16
15
14
13 12 11 10
9 8 7
6
5 4 3
2
1
Power supply earth
Power supply +24 V
Inputs
8
7
6
5
4
3
2
1
EME 32
Input module (e.g. 16-fold)
Input module (e.g. 16-fold)
Byte 1
Byte 0
Figure 29:
Halved inputs mode
10.4.3. Terminating resistors: DIP switch 8
In the case of the remote I/O interface both ends of the two-wire line of the field bus must be terminated with
resistors. If the last subscriber is a valve terminal, the terminating resistors can be activated by DIP switch 8.
NOTE!
The high data transfer rates used in the field bus technology may cause interfering signal reflections at the
ends of the field bus line. These may result in data errors. Connected terminating resistors will eliminate these
reflections.
DIP 8
Terminating resistors deactivated
OFF
Terminating resistors activated
ON
english
Type 8640