KROHNE IFC 010 Converter HART - Manual (Page 10)

HARTÆ Communications Protocol
IFC010 Command Specification Rev: 1.0 Release Date: 29 May 1997
© 1997 KROHNE Mefltechnik D-47058 Duisburg Page 10
The units selected for the Primary Variable (always SmoothedFlow) will also be the units for RawFlow. The latter
variable depending on the settings made via Command #51, Write Dynamic Variable Assignments, can be mapped onto
any Non-Primary Dynamic Variable, as described in section 5.1. Refer also to commentaries given for Command #51.
The Primary Variable Unit Codes accepted by this transmitter, are listed in Table 9.1.
NOTE: The transmitter software supports an expanded unitsí set for volumetrical flow, as compared with the software of
the instrumentís display module. Therefore HART flowrate units are stored in the device EEPROM as Full Scale Units
(Menus 1.1, 3.2.2) to avoid blank device screen when the latter displays flowrate measurements. Hence in the case of
manual device control, the user will be initially presented with a blank screen for the Full Scale Value (in the Menus
mentioned) if the HART master has set any expanded (for display module) unit. However, it mustnít bother - the actual
value of Full Scale can be scrolled in all device internal units by the usage of Up-key on device keypad.
7.7 Command #45 Trim Primary Variable Current Dac Zero
The lower calibration point for the instrument is 4.0 mA. If this command is not preceded by command #40 with
corresponding data field, the request will be rejected with Not In Proper Current Mode response code (9).
7.8 Command #46 Trim Primary Variable Current Dac Gain
The upper calibration point for the instrument is 20.0 mA. If this command is not preceded by command #40 with
corresponding data field, the request will be rejected with Not In Proper Current Mode response code (9).
7.9 Command #48 Read Additional Transmitter Status
Reads 5 bytes of status data from the transmitter.
In designations used Bit #0 corresponds to LSBit, Bit #7 - to MSBit.
Data byte #0 - ADC module errors
Bit #7 ADC fatal error
Bit #6 Undefined
Bit #5 Undefined
Bit #4 Undefined
Bit #3 Undefined
Bit #2 Undefined
Bit #1 Undefined
Bit #0 Error in IMoCom configuration
Data byte #1 - Status of the blocks of global EEPROM
Bit #7 Checksum error in the Device block
Bit #6 Checksum error in the Communication block
Bit #5 Checksum error in the Display block
Bit #4 Checksum error in the Counter block
Bit #3 Checksum error in the Control/Indicate block
Bit #2 Checksum error in the Pulse/Frequency block
Bit #1 Checksum error in the Current block
Bit #0 Checksum error in the General block
Data byte #2 - Display module errors
Bit #7 Display fatal error
Bit #6 Undefined
Bit #5 Undefined
Bit #4 Undefined
Bit #3 Undefined
Bit #2 Undefined
Bit #1 Undefined