RMF Systems CMS 2 - Page 44

43
As a policy of continual improvement, RMF reserves the right to alter the specification without prior notice.
201.028 REV 1 Date of Issue: 18 June 2018
6.4.1.1 Set Up
Protocol Type
RTU (not ASCII)
Data Bits
8
Stop Bits
1
Parity
Required, Even or none
Baud
Auto-sensing 1200-115200
Signaling
RS485
Node Address
4 (or user set)
Figure 6.29 Settings
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 CMS can present results in several different industry formats (ISO, NAS etc.) The format required can be most
easily set using RMF-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