Download User manual

BLCDN-2M12S-2AI-TC
9 Mapping and diagnostics
9.1 I/O- and Diagnostic Data mapping
INPUT
BYTE
Bit 7
Channel 0
0
1
2
3
AI 0 LSB
AI 0 MSB
AI 1 LSB
AI 1 MSB
4
5
6
Module number reporting diagnostic data
Replace
N/A
Diag.
Reserved
station
active
Reserved
7
Reserved
Channel 1
Diag.
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
No Pt1000
sensor
CH 0
No Pt1000
sensor
CH 1
Open
circuit
CH 0
Open
circuit
CH 1
Range
error
CH 0
Range
error
CH 1
9.2 2AI-TC - Diagnostic messages
Edition • 2011-3-15
Diagnostic message
No PT1000 sensor Ch x
Open circuit Ch x
Range error Ch x
13 / 32011
Meaning
Cold junction compensation: a cold junction temperature of 23°C is automatically presumed.
Open circuit detection
Measurement value range error, underflow diagnosis only in temperature measurement range.
Threshold: 1 % of the positive measurement range end value.
Hans Turck GmbH & Co.KG ñ D-45472 Mülheim an der Ruhr ñ Witzlebenstraße 7 ñ Tel. 0208 4952-0 ñ Fax 0208 4952-264 ñ [email protected] ñ www.turck.com