Monitoring Unit's Self-Diagnostic Error Flag - Panasonic FP3 Technical Manual

4-6. Monitoring Unit's Self-diagnostic Error
Flag
If a sensor connection error occurs or a measured temperature becomes outside the preset temperature range, correct
data cannot be handled in a FP3/FP10S. In order to check occurrence of such errors, the thermocouple input unit has
self-diagnostic functions. The result of unit's self-diagnosis is stored in its shared memory as.
Shared memory
address (word units)
K8
K9
K10
K11
Notes:
S If an abnormality is detected in the thermocouple sensor connection, data in the shared memory becomes
as:
- Normalized data: K8000
- Celsius data: K20000
S If a temperature range error occurs, unfixed value is set in the shared memory.
J Self-diagnostic error flag reading program
Self-diagnostic error flag condition stored in the shared memory is monitored by executing the F150 (READ)/ P150
(PREAD) instructions as follows.
Condition:
- Thermocouple input unit slot position: Slot 2 position
- Number of enabled channels: 1 channel (CH0)
- Shared memory self-diagnostic error flag area for CH0: K8
- CPU register for storing error flag condition: DT100
Program example
R9010
F150 READ, K2, K8, K1, DT100
Slot number
Starting address of the
shared memory read
Read word number
Descriptions
Self-diagnostic error flag area g g
(K1 is set when a sensor (
connection or temperature connection or temperature
range error is detected) range error is detected)
Transfer
destination

4-6. Monitoring Unit's Self-diagnostic Error Flag

CH0
CH1
CH2
CH3
37