Chapter 2 Hardware description
2-5
The following picture illustrates the terminating resistors of the respective
start and end station.
RxD/TxD-P(B)
Shield
Master
Slave
3
8
3
8
P5V
P5V
M5V
M5V
330
330
330
330
220
220
3
8
RxD/TxD-N(A)
5
6
RxD/TxD-P(B)
RxD/TxD-N(A)
Slave
RxD/TxD-P(B)
RxD/TxD-N(A)
5
3
8
6
Shield
Shield
Note!
Please consider to terminate the last participants on the bus at both ends
by activating the terminating resistor.
Valid address may range from 1 to 125. Addresses must be unique on the
bus.
The slave address must have been preset before the bus coupler is turned
on.
Pos. Value
Example
State
Address
1 not
used
---
2 1
1
3 2
1
4 4
0
5 8
0
6 16
0
7 32
1
--
1
2
4
8
16
32
64
1
0
1
2
3
4
5
6
7
8
8 64
0
1+2+32=35
Address: 35
Bus connection
Address selector
Manual ELCO Intelligent I/O-FS200