Westermo LD-63 AD - Manual (Page 11)

11 6072-2004
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Supervision table when selecting data bits
7 bits
8 bits
No parity
Parity
1 stop bit
2 stop bits
Number of bits
Termination with fail-safe
Termination (2-wire) S2
Termination (4-wire) S2
No termination S2
Transmitted power channel 1
Low S2
High S2
Transmitted power channel 2
Low
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
High S3
ON
1 2 3 4
ON
1 2 3 4
1
2
3
4
5
6
7
8
9
S2:1-5 S1:1-9
S3:4-1
ON
1 2 3 4 5
ON
1 2 3 4 5
Factory settings
S1
ON
1 2 3 4 5 6 7 8 9
S3
ON
1 2 3 4
S2
ON
1 2 3 4 5
Selection of 2- or 4-wire
4-wire S1
ON
1 2 3 4 5 6 7 8 9
2-wire S1
ON
1 2 3 4 5 6 7 8 9
Selection of 2-wire RS-485 or 4-wire RS-422.
For RS-232/V.24 S1:1 can be ignored.
ON
1 2 3 4 5
1 2 3 4 5
ON
1 2 3 4 5
ON
LA-01 Y
OR
OR
OR
LA-01 V
OR
F/O
V-function
Y-function
F/O
F/O F/O
RS-232/V.24 / RS-422/485
RS-232/V.24 / RS-422/485
channel 1 channel 2
channel 1 channel 2
Description V/Y-function
Normally high power is used. Low power is used with fibre
lengths shorter than 100 m.
Normally high power is used. Low power is used with fibre
lengths shorter than 100 m. S3: 2–4 is not used.