KROHNE UFC 500 HART - Manual (Page 19)

HARTô Smart Communications Protocol
UFC500 Command Specification Rev: 2.0 Release Date: 9 Jun 2001
© 2001 KROHNE Mefltechnik D-47058 Duisburg Page 19
8.5 Command #134 Read Analog Output Low Flow Cutoff Control And Values
Reads low flow cutoff parameters of the requested output.
REQUEST DATA BYTES
#0
ANALOG
OUTPUT
NUMBER
CODE
RESPONSE DATA BYTES
#0 #1 #2 #3
ANALOG CUTOFF CUTOFF CUTOFF
OUTPUT CONTROL ON OFF
NUMBER VALUE VALUE
CODE
Data Byte #0 Analog Output Number Code, equals м1о for current output and м2о - for pulse output.
Data Byte #1 Cutoff control variable:
0 - cutoff option is switched On ,
1 - cutoff option is switched Off.
Data Byte #2 Cutoff On Value, in % of the Primary Variable Upper Range Value. When cutoff is switched
Off (Data Byte #1 = 1), the instrument still uses the cutoff option, but with defaulted On
Value, namely 0.1%. Nevertheless, bus master will be presented with the On Value, that is
stored in EEPROM, but is not currently in use.
Data Byte #3 Cutoff Off Value, in % of the Primary Variable Upper Range Value. When cutoff is switched
Off (Data Byte #1 = 1), the instrument still uses the cutoff option, but with defaulted Off
Value, namely 0.25%. Nevertheless, bus master will be presented with the Off Value, that is
stored in EEPROM, but is not currently in use.
COMMAND-SPECIFIC RESPONSE CODES
0 No Command-Specific Errors
1 Undefined
2 Invalid Selection
3-4 Undefined
5 Too Few Data Bytes Received
6 Local Device User
7-127 Undefined