VFM-60
Vortex Flowmeter
Rev1.3
Date:24/04/2020 User’s Manual
34 / 59
44 9D 1E 3F
(
total flow in float
=
1256.94
)
5A
(CRCL)
91
(CRCH)
7 Introduction of HART communication protocol
7.1 HART commands
7.1.1 Command 0:Read transmitter unique identifier
Command formate
Return to the expension device type code, version number and identification number
Request: None
Response:
Byte 0: 254
Byte 1: Manufacture’s ID
Byte 2: Manufacture’s device type
Byte 3: Number of request preambles
Byte 4: Revision level of universal command
Byte 5: Revision level of transmitter document
Byte 6: Software revision level
Byte 7: Hardware revision level
Byte 8: Flags, none defined at this time
Byte 9-11: Device Indentification Number
Test of command
Send 0 command:FF FF FF FF FF 02 80 00 00 82; to request information of the instrument
Receive 0 command:FF FF FF FF FF 06 80 00 0E 00 00 FE 1A 1A 05 05 00 00 00 00 AD 18 8C
4F
7.1.2 Command 1: Read primary variable value (PV)
Command formate:
Return to primary variable value in float.
Request:None
Response:
Byte 0: Primary variable unit code
Byte 1-4: Primary variable