Free Running Timer (System Timer After Power On) - Omron CJ1G/H-CPU series Operation Manual

CJ1-H/CJ1M CPU Unit Ver. 3.0 Upgrades
1-4-5

Free Running Timer (System Timer after Power ON)

Unit Ver. 2.0 or Earlier
Unit Ver. 3.0 or Later
26
• Program index files (CX-Programmer section names, section comments,
and program comments)
CS/CJ Series
This enables backup/restoration of all data in the CPU Unit including I/O com-
ments if an error occurs or when adding a CPU Unit with the same specifica-
tions without requiring a Programming Device.
The system did not provide a timer function that did not require instructions.
The system timers used after the power is turned ON are contained in the fol-
lowing Auxiliary Area words.
Name
10-ms Incrementing
Free Running Timer
100-ms Incrementing
Free Running Timer
Note The timer will continue to be incremented when the operating mode is
switched to RUN mode.
Example: The interval can be counted between processing A and processing
B without requiring timer instructions. This is achieved by calculat-
ing the difference between the value in A000 for processing A and
the value in A000 for processing B. The interval is counted in 10 ms
units.
CPU Unit
• User program
• Parameters
• I/O memory
(In comment memory)
Symbol table file
Comment file
Program index file
These files can also be backed up using simple backup.
Address Function
A000 This word contains the system timer
used after the power is turned ON.
0000 hex is set when the power is
turned ON and this value is automat-
ically incremented by 1 every 10 ms.
The value returns to 0000 hex after
reaching FFFF hex (655,350 ms),
and then continues to be automati-
cally incremented by 1 every 10 ms.
A001 This word contains the system timer
used after the power is turned ON.
0000 hex is set when the power is
turned ON and this value is automat-
ically incremented by 1 every 100
ms. The value returns to 0000 hex
after reaching FFFF hex (6,553,500
ms), and then continues to be auto-
matically incremented by 1 every
100 ms.
Section 1-4
Simple backup executing
Memory Card
Access
Read-only
Read-only