Command 40: Enter/Exit Primary Variable Current Mode; Command 45: Trim Primary Variable Current Dac Zero - Bell VFM60 Series User Introduction Manual

NONE
Test of command:
Send command 37: FF FF FF FF FF 82 9A 1A AD 18 8C 25 00 1E; Write the primary variable
lower limit to current primary variable value.
Receive command 37: FF FF FF FF FF 86 9A 1A AD 18 8C 25 02 00 00 18

7.1.19 Command 40: Enter/Exit primary variable current mode

Command formate:
Device is set to fixed primary variable current, when primary variable is 0, means to exit primary
variable current mode.
Request:
Byte 0-3: Fixed primary variable current level IEEE 754, mA
Response:
Byte 0-3: Actual fixed primary variable current level IEEE 754, mA
Test of command:
Send command 40: FF FF FF FF FF 82 9A 1A AD 18 8C 28 04 40 80 00 00 D7
Receive command 40: FF FF FF FF FF 86 9A 1A AD 18 8C 28 06 00 00 40 80 00 00 D1

7.1.20 Command 45: Trim primary variable current DAC zero

Command formate:
Trim the primary variable current AO zero, so the current current value is accurate set to its min
value.
Before implementing this command, use command 40 to set current to accurate primary variable
AO min value. If device is not under fixed primary variable current mode or current has not been set
to accurate min value, need to return response code 9---not under correct current mode.
Request:
Byte 0-3: Externally measured primary variable current level IEEE754, units of mA
Response:
Byte 0-3: Actual measured primary variable current level IEE 754
Test of command:
Send command 45: FF FF FF FF FF 82 9A 1A AD 18 8C 2
Receive command 45: FF FF FF FF FF 86 9A 1A AD 18 8C 2D 06 09 00 40 80 00 00 DD :
response code is 09, device is not under correct current mode.
Date:24/04/2020
D 04 40 80 00 00 D2
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VFM-60
Vortex Flowmeter
Rev1.3
User's Manual