KROHNE UFC 500 HART User 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