KROHNE UFC 500 HART - Manual (Page 43)

HARTô Smart Communications Protocol
UFC500 Command Specification Rev: 2.0 Release Date: 9 Jun 2001
© 2001 KROHNE Mefltechnik D-47058 Duisburg Page 43
8.23 Command #157 Write Device-Specific Units And Enumerators
Writes device-specific units and controls.
REQUEST DATA BYTES
#0 #1 #2 #3
PLAUSIB NUMBER NUMBER WEIGHT
ERROR PLAUSIB PLAUSIB POINT
ERRORS ERRORS OK
MSB LSB
#4 #5
PULSE PULSE
VOLUME RATE
UNITS UNITS
#6 #7 #8 #9
REV DISPLAY ERROR DISPLAY
SCALE TOTAL MESSAGE TRANSIT
CONTROL CONTROL CONTROL TIME
CONTROL
RESPONSE DATA BYTES
#0 #1 #2 #3
PLAUSIB NUMBER NUMBER WEIGHT
ERROR PLAUSIB PLAUSIB POINT
ERRORS ERRORS OK
MSB LSB
#4 #5
PULSE PULSE
VOLUME RATE
UNITS UNITS
#6 #7 #8 #9
REV DISPLAY ERROR DISPLAY
SCALE TOTAL MESSAGE TRANSIT
CONTROL CONTROL CONTROL TIME
CONTROL
Data Byte #0 Error limit in % of measured value for plausibility statement. Valid range: 1..99.
Data Byte #1..#2 Limit value for the counter of incorrect measurements. Valid range: 0..10000.
Data Byte #3 Weight factor for correct measurements. Valid range: 1..50.
Data Byte #4 Pulses per volume units, used only for scaling of PulseVolume parameter (refer to Command
#142, Read Frequency/Pulse Output Parameters) and do not affect physical output. For unitsí
codes refer to Table 9.3.
Data Byte #5 Pulse rate units, used only for scaling of PulseRate parameter (refer to Command #142, Read
Frequency/Pulse Output Parameters) and do not affect physical output. For unitsí codes refer
to Table 9.4.
Data Byte #6 Reverse scale control, defines whether the Upper Range Value for reverse flow is the same as
for forward, or different:
0 - Different,
1 - Same as for forward flow.
In the first case the Upper Range Value for reverse flow can be accessed via Command
#158, Read Transmitter Variable Range Values.