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Device status symbols
Local display
- NAMUR NE 107
NAMUR
- HCF
Local display
- Siemens standard
SIMATIC PDM/PLC
Symbol Device
status
Priority * Priority * Symbol
Device
status
Priority ** Symbol Device status
Priority **
Failure
1
1
Mainte‐
nance
alarm
1
Maintenance
alarm
1
Cause: Output signal invalid due to fault in the field device or in the peripherals.
Action: Maintenance is required immediately.
Mainte‐
nance re‐
quired
3
4
Mainte‐
nance de‐
manded
2
Maintenance
demanded
2
Cause: Output signal is still valid, but wear reserve is almost exhausted and/or a function will be limited soon.
Action: Maintenance is strongly recommended as soon as possible.
Mainte‐
nance re‐
quired
3
4
Mainte‐
nance re‐
quired
3
Maintenance
required
3
Cause: Output signal is still valid. No functional restriction detected but end of wear reserve expected in next weeks.
Action: Maintenance of device should be planned.
Function
check
2
2
Manual
operation
4
Manual opera‐
tion
4
Cause: Output signal temporarily invalid (e.g. frozen) due to work being performed on the device.
Action: Disable manual mode via HMI or engineering system.
Function
check
2
2
Simula‐
tion or
substitute
value
5
Simulation or
substitute val‐
ue
5
Cause: Output signal temporarily does not represent the process because output based on a simulation value.
Action: Disable simulation mode via HMI or engineering system or restart device.
Out of
specifica‐
tion
4
3
Process
value
alarm
8
Process value
alarm
8
Cause: Deviations from permissible ambient or process conditions detected by the device (through self-monitoring, or warn‐
ings / faults in the device) indicate that the measured value is unreliable or deviations from the set value in the actuators is most
likely greater than anticipated under normal operating conditions. Process or ambient conditions will damage the device or
result in unreliable output.
Action: Check ambient temperature or process conditions. If possible, install device at different location.
Diagnostics and troubleshooting
10.1 Device status symbols
SITRANS FC330
168
Operating Instructions, 01/2019, A5E44030648-AB