Special Internal Relays Relating To Logging/Trace Operation - Panasonic FP0H User Manual

Programmable controller control unit
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3.2.2 Special Internal Relays Relating to Logging/Trace Operation

 Special Internal Relay
Device
Name
no.
Logging/trace is being
R9180
executed.
Logging/trace buffer
R9181
storage/File being written
Logging/trace completed
R9182
Logging over-speed relay
R9183
Buffer overflow
R9184
Logging/trace error
R9185
R9186
No SD card free space
Device/trigger setting
R9187
error
R9188
Trace stop trigger monitor
Trace data acquisition
R9189
completed
(Note 1) The above device numbers are those for LOG0. Special internal relay numbers vary depending on LOG
numbers as shown in the table below.
LOG no.
Relay no.
Operation
Turns on while the logging/trace function is activated. Another system
relay allocated to the same LOG number is reset during the start
operation.
The logging/trace function is activated by any of the following
methods; 1: Autostart, 2: Start by instruction, 3: Start by tool software.
Storing data in the buffer memory is executed while this relay is on.
Turns on when writing files into an SD memory card becomes
enabled after turning on the logging/trace active relay and enabling
the logging in the buffer. This relay is always off when selecting Trace
for the application.
Turns on after the completion of file writing when requesting to stop
the logging trace operation or performing the automatic stop.
Turns on when the buffer logging speed exceeds the writing speed to
an SD memory card in the logging processing. Turns on when the
number of data previously stored and the number of data stored this
time increase.
Turns on at the timing of buffer logging, and turns off at the timing of
buffer logging or the end of scan.
Turns on when the buffer memory has been exhausted. The buffer
overflow counter (DT90620) is incremented by one. At that time, new
data cannot be stored. Also, writing data into the SD memory card
does not stop.
The buffer overflow relay turns off at the end of scan when a vacancy
occurs in the buffer as writing data into an SD memory card
progresses, and the buffer overflow counter is cleared to 0. Also, after
the occurrence of vacancy in the buffer, data logging is executed
once the logging trigger condition is met.
This relay is always on when buffer full occurs as the stop condition
when selecting Trace for the application.
Turns on when an error is detected during the logging/trace operation
and stops the operation.
Turns on when one of the following conditions is met during the
logging/trace operation and stops the logging/trace operation.
When an SD memory card is running out of free space
When an error in accessing an SD memory card occurs.
Turns on when an error is detected in setting values during the
startup operation. The logging/trace error relay R9185 also turns on.
At that time, the active relay does not turn on because the
logging/trace function cannot be activated.
Monitors a registered trace stop trigger when executing tracing. Turns
on when the condition is met. This relay is always off when selecting
Logging for the application.
Turns on after logging data for a specified number of times after
detecting the trace stop trigger during the execution of trace. This
relay is always off when selecting Logging for the application.
0
R9180 to R9189
R9190 to R9199
3.2 Operation Check Using Logging/Trace Monitor
1
R9200 to R9209
2
3
R9210 to R9219
3-5

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