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Lenz, Lighting CV 51 Spreadsheet.
by Phil Hartung

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Here is a table with all available values for CV51 in the Lenz series decoders. Some values are not useful as mentioned below.

CV51 Value (decimal)
--------Bit Values----------
Result
CV51.3
CV51.2
CV51.1
CV51.0
0
0
0
0
0
Directional
lamps, no dimming, F0 on/off
1
0
0
0
1
Independent
lamps, F0=fwd, F1=rear
2
0
0
1
0
Directional
lamps, no dimming (because bits 2 and 3 are both 0), F0
on/off
3
0
0
1
1
Independent
lamps, F0=fwd, F1=rear, no dimming because biths 2 and 3 are
both 0
4
0
1
0
0
Directional
lamps, no dimming, F0 on/off
5
0
1
0
1
Independent
lamps, F0=fwd, F1=rear
6
0
1
1
0
Directional
Lamps, F0=on/off, F1=dim front only (if on)
7
0
1
1
1
Independent
lamps, F0=fwd, F1=read, F4 dims front only
8
1
0
0
0
Directional
lamps, no dimming, F0 on/off
9
1
0
0
1
Independent
lamps, F0=fwd, F1=rear
10
1
0
1
0
Directional
Lamps, F0=on/off, F1=dim rear only (if on)
11
1
0
1
1
Independent
lamps, F0=fwd, F1=read, F4 dims rear only
12
1
1
0
0
Directional
lamps, no dimming, F0 on/off
13
1
1
0
1
Independent
lamps, F0=fwd, F1=rear
14
1
1
1
0
Directional
Lamps, F0=on/off, F1=dim either lamp (if on)
15
1
1
1
1
Independent
lamps, F0=fwd, F1=read, F4 dims both lamps

Since CV51.1 set doesn't make any sense without either 51.2 or 51.3 set, Values 2 and 3 are useless (same as 0, 1). Also, have 51.2 or 51.3 set without 51.1 set is useless, resulting in values 4, 5, 8, 9, 12, and 13 are useless. Leaving, 0, 1, 6, 7, 10, 11, 14, and 15 are useful.

Phil Hartung
Idaho Falls, ID

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