Emerson Rosemount 5708, Справочное руководство

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Connection via RS-485
November 2017
Reference Manual
00809-0100-4570, Rev DA
Connection via RS-485
162
To retrieve all 13 parameters, the Rosemount
™
System Controller needs to transmit a single command.
The packet format of the request is as follows:

The above values are all hexadecimal

For CRC-16, see reference implementation in Appendix A: Specifications and Reference Data

The below table indicates the request string for retrieving data from 15 devices (polling addresses 00
to 15):
The packet format of the reply is as follows:
1 BYTE 1 BYTE 4 BYTES 2 BYTES
Polling a 1 03 00 00 00 1A CRC-16
Table C-1. Request String for Retrieving Data from Rosemount 5708
Polling address Request
00 01 03 00 00 00 1A C4 01
01 02 03 00 00 00 1A C4 32
02 03 03 00 00 00 1A C5 E3
03 04 03 00 00 00 1A C4 54
04 05 03 00 00 00 1A C5 85
05 06 03 00 00 00 1A C5 B6
06 07 03 00 00 00 1A C4 67
07 08 03 00 00 00 1A C4 98
08 09 03 00 00 00 1A C5 49
09 0A 03 00 00 00 1A C5 7A
10 0B 03 00 00 00 1A C4 AB
11 0C 03 00 00 00 1A C5 1C
12 0D 03 00 00 00 1A C4 CD
13 0E 03 00 00 00 1A C4 FE
14 0F 03 00 00 00 1A C5 2F
15 10 03 00 00 00 1A C7 40
1 BYTE 1 BYTE 1 BYTE 4 BYTES 4 BYTES 4 BYTES
Polling a 1 03 34 Avg.
distance
Min.
distance
Max. distance
4 BYTES 4 BYTES 4 BYTES 4 BYTES 4 BYTES 4 BYTES
Volume 4-20 mA SNR Temp (°C) Temp (°F) Avg. level
4BYTES 4 BYTES 4 BYTES 4 BYTES 2 BYTES
Bulk density Mass S/N Tag name CRC-16