Terminering with fail-safe, Factory settings, Data control by data flow or rts-control – Westermo MA-45 User Manual
Page 11: 2/4-wire transmission
11
6045-2002
Supervision table when selecting data bits
7 bits
l l l l
8 bits
l l l l
No parity
l l l l
Parity
l l l l
1 stop bit
l l l l
2 stop bits
l
l l l
Number of bits 9 10 10 10 11 11 11 12
Terminering
with fail-safe
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
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.
S3
Terminated (4-wire)
S3
Terminated (2-wire)
S3
No termination
Factory settings
ON
1 2 3 4
ON
1 2 3 4 5 6 7 8
Data control by data
flow or RTS-control
S2: 8 not used
S2
Data control
S2
RTS-control
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
S2
Transmitter
always active
ON
1 2 3 4 5 6 7 8
2/4-wire transmission
S2
2-wire
S2
S2
S3
4-wire
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8