KROHNE UFC 500 HART User Manual

Page 35

HARTô Smart Communications Protocol

UFC500 Command Specification Rev: 2.0 Release Date: 9 Jun 2001

Page

#16

#17

#18

#19

TIME

UNIT

FACTOR

MSB

LSB

Data Byte #0

Language used for text presentation on the local screen of the instrument:
0 - Gr.Britain/USA,
1 - German.

Data Byte #1

Defines whether the device outputs are frozen during direct instrument control via keypad, or
not:
0 - ìYesî,
Any other value - ìNoî.

Data Byte #2

Totalizersí reset control:
0 - Reset is disabled,
Any other value - Reset is enabled.

Data Byte #3-#8

ASCII-text, specifying user-defined volume unit.

Data Byte #9-#11

ASCII-text, specifying user-defined time unit.

Data Byte #12-#15

Scaling factor for user-defined volume unit, relative to cubic meters, IEEE 754. Refer to
Table 9.3, Factors for Volume.

Data Byte #16-#19

Scaling factor for user-defined time unit, relative to seconds, IEEE 754. Refer to Table 9.4,
Factors for Time.

NOTE: For ASCII-strings the following characters are allowed (i.e. will be interpreted by display module): A..Z, a..z,
0..9, м+о, м-о and underscore symbol м_о. Each text-field should be completely filled with acceptable symbols: say, for
ìhoursî time unit мhr_о-specifier should be used instead of ìhrî.

CAUTION: Scaling factors are not checked by transmitter and must not be zeroes!

COMMAND-SPECIFIC RESPONSE CODES

No Command-Specific Errors

Undefined

Invalid Selection (of Language)

3-4

Undefined

Too Few Data Bytes Received

Local Device User

In Write Protect Mode

8-127

Undefined