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As a policy of continual improvement, STAUFF reserves the right to alter the specification without prior notice.
201.031
Date of Issue: 06 November 2018
6.4.1.1.1 Communications Check
You should be able to read the product ID code from register 0 (from Modbus node address 204). The
product ID code is the value 54237 (decimal) or 0xD3DD (hexadecimal).
6.4.1.1.2 Result Format
The LPM can present results in several different industry formats (ISO, NAS etc.) The format required
can be most easily set using LASPAC-View; however it is also possible to set it via Modbus. To do this,
write the required value 0-4 from table 6A to the TEST FORMAT register 19. The factory set value is 0
(ISO 4406:1999).
The selected format does not affect the particle count values, but does completely change the
interpretation of the result codes and set limits, if used.
Note: If the format is changed, then any set alarm limits must be changed too since these will refer to the
old format. E.g. a limit of “NAS 11” cannot be directly expressed using the ISO4406 standard.
Value
Format
Main Class
Example
Individual Codes
Example
0
ISO 4406:1999
21/20/17
1
NAS 1638
NAS 12
(12 11 11 7 6)
2
AS4059E Table 2 12A-F
12A/12B/11C/11D/7E/6F
3
AS4059 Table 1
Class 12
12 11 11 7 6
4
ISO 11218 Draft
ISO (12)
12 11 11 7 6
Table 6A TEST FORMAT Register 19
6.4.1.2 Result Codes
The most recent measurements are presented as numeric codes (i.e. numbers) according to the
selected TEST FORMAT. These codes can be read from registers 56-63, as per Table 6B.
Register ISO 4406
Code
AS4059E Table 2
Class
NAS1638/ AS4059E Table 1/
ISO 11218 (Draft) Codes/
Classes
56
≥4µ
Basic
Basic
57
≥6µ
-
-
58
≥14µ
A
5-15
59
≥21µ
B
15-25
60
≥25µ
C
25-50
61
≥38µ
D
50-100
62
≥50µ
E
100+
63
≥70µ
F
Table 6B RESULT CODES Registers 56-63
Содержание LPM-II-plus
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