Free-Running Timers - Omron CJ - 08-2008 Operation Manual

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

Free-running Timers

30
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 timers used after the power is turned ON are contained in the fol-
lowing Auxiliary Area words.
Name Address
10-ms Incrementing A000
Free Running Timer
100-ms Incrementing A001
Free Running Timer
1-s Incrementing Free A002
Running Timer
Simple backup executing
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.
Function
This word contains the system timer
used after the power is turned ON.
A value of 0000 hex is set when the
power is turned ON and this value is
automatically incremented by 1
every 10 ms. The value returns to
0000 hex after reaching FFFF hex
(655,350 ms), and then continues to
be automatically incremented by 1
every 10 ms.
(Unit version 3.0 or later)
This word contains the system timer
used after the power is turned ON.
A value of 0000 hex is set when the
power is turned ON and this value is
automatically 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 automatically incremented by 1
every 100 ms.
(Unit version 3.0 or later)
This word contains the system timer
used after the power is turned ON.
A value of 0000 hex is set when the
power is turned ON and this value is
automatically incremented by 1
every second. The value returns to
0000 hex after reaching FFFF hex
(65,535 s), and then continues to be
automatically incremented by 1
every second.
(Unit version 4.0 or later)
Section 1-5
Memory Card
Access
Read-only
Read-only
Read-only