Westermo MD-45 - Manual (Page 26)

26 6157-2003
ON
1 2 3 4
Selection of bits
9 S1
10 S1
11 S1
12 S1
2/4-wire transmission
Termination with fail-safe *
2-wire
Terminated (4-wire)
S1
4-wire S1
S2
ON
1 2 3 4
Terminated (2-wire) S2
ON
1 2 3 4
S2
* The fail-safe function forces the signal state of
the receiver to OFF when the connected
transmitter is in tri-state (transmitter inactive).
The receiver located furthest away shall be
terminated.
Supervision table when selecting data bits
7 bits
8 bits
No parity
Parity
1 stop bit
2 stop bits
Number of bits 9 10 10 10 11 11 11 12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
No termination
Selection of data rate
Data or RTS-control
1 200 780 µs S1
2 400 410 µs S1
4 800 220 µs S1
9 600 130 µs S1
19 200 48 µs S1
38 400 34 µs S1
57 600 22 µs S1
115 200 11 µs S1
Factory settings
ON
1 2 3 4
S2
S1
S1: 8 not used
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Data control S1
RTS-control S1
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Transmitter
always active
S1
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Data
rate
Turning
time