Buffer Settings; Overview Of Buffer Function - Panasonic FP7 User Manual

Optional Settings for Analog Input

6.7 Buffer Settings

6.7.1 Overview of Buffer Function

This function stores digital conversion values acquired at a preset cycle into a unit memory. If
a trigger is input while the buffer function is executed (with the buffer execution relay turned
ON), digital conversion values for a specified number of data items will be stored in the buffer
memory (unit memory) at a specified cycle.
Buffer function configuration
Starts execution
Buffering
Buffer data read
Executes buffering
Digital
conversion
value
Analog input
processing
Buffer
areas UM 00800
(Unit memory)
(10,000 words)
• If the configuration-disconnection detection setting has not been set to "not execute", the
function will be disabled even if the buffer execution relay is turned ON.
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6-16
Specify execution conditions (trigger settings, the number of
buffer data items, and cycle)
Buffer function ON
Starts the buffering of pre-trigger digital conversion values at
the specified cycle
Trigger ON
Starts the buffering of digital conversion values at the
specified cycle
Buffering
completion
Reads buffer data from the CPU unit
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Pre-trigger data buffering
Aligns and stores the
contents in the shared
memory on completion of
CH0
CH0 buffer CH1 buffer
areas UM 03000
to UM 02F0F to UM 0570F
(10,000 words)
Buffer trigger
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Post-trigger data buffering
acquisition
CH1 CH2
CH2 buffer
areas UM 05800
to UM 07F0F
(10,000 words)
Completion of acquisition
CH3
CH3 buffer
areas UM 08000
to UM 0A70F
(10,000 words)