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APPENDICES
Appendix 3 Buffer Memory Areas
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Pulse under-measurement flag
• The value indicating whether the pulse is being measured in the pulse measurement function is stored in this area.
• When the pulse is being measured, 1H is stored. When the pulse is not being measured, 0H is stored.
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Measured pulse value update flag
• The update status of CH1 Measured pulse value (Un\G516 to Un\G517) is stored. When the buffer memory areas are
updated, 1H is stored. When the buffer memory areas are not updated, 0H is stored.
• The buffer memory areas shown above are updated without resetting this area. To check the update status once again,
reset this area by the following resetting method.
■Resetting method
Write 0H in this area using a program and reset this area.
When this area is used as an interlock, consider the scan time. Depending on the program used, immediately
after 0H is written by a program, either of the buffer memory areas shown above may be updated, and 1H
may be stored in this area.
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Measured pulse value
• The measured value of the ON width or OFF width of the pulse input to the function start input terminal is stored.
• The measurement range is between 2000 and 2147483647 (in increments of 0.1s).
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Synchronization measured pulse value
• The measured pulse value is latched by synchronizing with the rise of the synchronization signal during the execution of the
synchronization control function (during the inter-module synchronization control).
• In this area, the measured pulse value is latched only in the pulse measurement mode.
• The range of the stored value is between 2000 and 2147483647 (in increments of 0.1s).
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory address name CH1 CH2
CH Pulse measurement section setting 512 528
Buffer memory address name CH1 CH2
CH Pulse under-measurement flag 514 530
Buffer memory address name CH1 CH2
CH Measured pulse value update flag 515 531
Buffer memory address name CH1 CH2
CH Measured pulse value 516 to 517 532 to 533
Buffer memory address name CH1 CH2
CH Synchronization measured pulse value 518 to 519 534 to 535
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