Laser Precipitation Monitor Digital Output Commands

LPM Digital Output Commands for opto-couplers Search web site

Laser Precipitation Monitor

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<id>D1<para5>	setting the function of the digital output 1 (opto-coupler)
Description	see command table "D1" below
Value range	0...18
Initial value	13

Parameter	Description	Inactive (open)	Active (closed)	Frequency (Hz)
0	always inactive	always
1	sensor error active	no sensor error	sensor error
2	sensor error inactive	sensor error	no sensor error
3	sensor in operation			50
4	sensor in operation + error			no error: 50 sensor error: 1
5	sensor in operation + precipitation + error			no error: 50 precipitation: 10 sensor error: 1
6	sensor in operation + liquid precipitation + solid precipitation + error			no error: 50 liquid precipitation: 25 solid precipitation: 10 sensor error: 1
7	precipitation active	no precipitation	precipitation
8	precipitation inactive	precipitation	no precipitation
9	liquid precipitation active	no liquid precipitation	liquid precipitation
10	liquid precipitation inactive	liquid precipitation	no liquid precipitation
11	solid precipitation active	no solid precipitation	solid precipitation
12	solid precipitation inactive	solid precipitation	no solid precipitation
13	precipitation quantity 0.1 mm			10 (1impulse: 0.1 mm)
14	precipitation quantity 0.01 mm			50 (1impulse: 0.01 mm)
15	precipitation quantity 0.005 mm			50 (1impulse: 0.005 mm)
16	always active		always
17	precipitation type SYNOP (Table 4680) frequency output			see the following table for Parameter 17 (command D1 annd D2)
18	precipitation quantity 0.1 mm			1 (1impulse: 0.1 mm)

E&OE

Parameter 17 (command D1 and D2)

Note: frequency output changes every minute

Parameter	Frequency (Hz)	SYNOP (table 4680)	Description
0	1	-1	sensor error
1	5	0	no precipitation
2	10	51	light drizzle
3	20	52,53	moderate / heavy drizzle
4	25	41,42	unknown precipitation
5	33,33	57,61	light drizzle with rain, light rain
6	41,66	58,62,63	moderate / heavy drizzle with rain, moderate / heavy rain
7	50	67	light rain and / or drizzle with snow
8	62,5	68	moderate / heavy rain and / or drizzle with snow
9	83,33	77	snow grains
10	100	71	light snow fall
11	125	72,73	moderate / heavy snow fall
12	166,67	74,75,76	soft hail / ice grains
13	250	89	hail

Note: frequency output changes every minute

Command D2

<id>D2<para5>	setting the function of the digital output 2 (opto-coupler)
Description	see command "D1"
Value range	0...18
Initial value	17

E&OE

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