KROHNE UFC 500 HART - Manual (Page 22)

HARTô Smart Communications Protocol
UFC500 Command Specification Rev: 2.0 Release Date: 9 Jun 2001
© 2001 KROHNE Mefltechnik D-47058 Duisburg Page 22
8.8 Command #138 Read Analog Output Function
Reads the function of current/pulse output.
REQUEST DATA BYTES
#0
ANALOG
OUTPUT
NUMBER
CODE
RESPONSE DATA BYTES
#0 #1
ANALOG ANALOG
OUTPUT OUTPUT
NUMBER FUNCTION
CODE CODE
Data Byte #0 Analog Output Number Code, equals м1о for current output and м2о - for pulse output
Data Byte #1 Analog Output Function Code, depends on the output type:
For current output:
0 - Off.
1 - Direction indication.
2 - 1 Dir, output traces flowrate measurements only in one (positive) direction.
3 - Forward/reverse flow, the complete flowrate dynamic range (PV Upper Range Value +
Reverse Range) is mapped onto the range of the output current. Refer also to the instrument
Operating Manual and to Commands #140, Read Current Output Parameters, #158, Read
Transmitter Variable Range Values.
4 - 2 Dir, output traces flowrate measurements in both directions, for every direction the
corresponding flowrate dynamic range (PV Upper Range Value for positive direction and
Reverse Range - for negative) is mapped onto the range of the output current. Refer also to
the instrument Operating Manual and to Commands #140, Read Current Output Parameters,
#158, Read Transmitter Variable Range Values.
5 - Transit time.
For frequency/pulse output:
0 - Off.
1 - Error indication.
2 - 1 Dir, output traces flowrate measurements only in one (positive) direction.
3 - 2 Dir, output traces flowrate measurements in both directions.
4 - Transit time.
COMMAND-SPECIFIC RESPONSE CODES
0 No Command-Specific Errors
1 Undefined
2 Invalid Selection (of Analog Output)
3-4 Undefined
5 Too Few Data Bytes Received
6 Local Device User
7-127 Undefined