Examples Of Communication - Bell VFM60 Series User Introduction Manual

05 Reponse
06 Flowmeter
busy

6.7 Examples of communication

The flowmeter's instrument Modbus address is 01, baud rate=4800 (C08=01, C09=05, C38=02).
Example 1: Read flow rate F,F=916.49 (4 bytes float)
Host command：
Flowmeter reponse： 01 03 04 44 65 1F CE 77 78
Example 2: Read total flow
Host command： 01 03 00 24 00 02 84 00
Flowmeter reponse：01 03 04 44 9D 1E 3F 36 9D
Example 3: Read all the value displayed on the flowmeter, including flow rate, frequency, pressure,
temperature, density, total flow ..... all together 13 value (52 bytes)
Host command： 01 03 00 00 00 1A c4 01
Flowmeter reponse：01 03 34
44 65 1F CE（flow rate＝916.49）
42 48 00 00（frequency＝50）
00 00 00 00（reserved＝0）
00 00 00 00（pressure＝0）
00 00 00 00（temperature＝0）
3F 80 00 00（density＝1.00）
00 00 00 00（reserved＝0）
00 00 00 00（reserved）
00 00 00 00（reserved）
00 00 00 00（reserved）
00 00 04 E8（reserved＝1256）
00 00 00 00（reserved＝0）
Date:24/04/2020
The flow meter will take a long while to process the command. So
reponse this error code to prevent the host from processing a overtime
command.
is To advise the host that the flowmeter is processing a command which
will takes a long time. So the host should resend the command when the
flowmeter is free.
01 03 00 00 00 02 C4 0B
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VFM-60
Vortex Flowmeter
Rev1.3
User's Manual