Related Bits In The Plc Interface Area - Omron CS1W-MC221 - 02-2008 Operation Manual

Automatic Loading
Execution condition
Transfer Data (DM)

6-16-2 Related Bits in the PLC Interface Area

Bit name
Autoloading Error MC421
Reset Bit MC221
Autoloading Flag MC421
MC221
Autoloading Error Flag MC421
MC221
Autoloading Flag
Autoloading Error Flag
and Error Reset Bit
362
When debugging, check the Error Flags from the ladder program.
DIFU R1
R3
R2
Model Words Bit
n 05
n
n+10 04
n+18
n+10 05
n+18
For details on the PLC Interface Area, refer to 5-3 PLC Interface Area.
This flag turns ON when the data for the specified job number begins to be
downloaded as the result of executing the IOWR instruction. It turns OFF
when all of the data for that job number has been downloaded.
Automatic loading command
(IOWR instruction)
Autoloading Flag
(n+10, 04; n+18, 04)
The Autoloading Error Flag turns ON when an error occurs during automatic
loading. When the Autoloading Error Reset Bit is turned ON, the Autoloading
Error Bit will turn OFF. Unless the cause of the error has been cleared, how-
ever, the Autoloading Error Flag will turn back ON again the next time the
automatic loading is executed.
If communications are not restarted by the time the Autoloading Time Up set
in the Unit parameters has elapsed, an error will occur and the Autoloading
(Work bit)
This is the special address (6104) with the function of
specifying the job number for automatic loading.
17D8 Hex (6104)
Specifies the first source word.
Specifies the destination unit number 0 and specifies
two words of data to be transferred.
(Work bit)
(Work bit)
: Error reset for automatic loading
: Automatic loading begun.
: Automatic loading finished.
: Error occurred during automatic loading
: Automatic loading error reset turned ON.
When automatic loading is completed normally.
Section 6-16
Job number: 100
Description
Job number