180
12 FUNCTION LIST
12 FUNCTION LIST
The following table lists the functions of the CPU module.
: Supported, : Not supported
Some functions have restrictions on the firmware version of the CPU module used or the version of the
engineering tool used. ( Page 747 Added and Enhanced Functions)
Function Description Availability according
to operation mode
Reference
Process
mode
Redundant
mode
Constant scan Repeatedly runs a program while retaining the scan time
constant.
Page 85 Constant scan
Device/label access service
processing setting
Sets the time or execution timing of the device/label
access service processing performed in the END
processing in parameter.
Page 87 Device/label
access service processing
setting
Device/label access service
processing constant wait function
Improves the communication response of device/label
access service processing requests. Based on SM315
(Service processing constant wait setting flag) and SD315
(Service processing constant wait status setting), device/
label access service processing requests are accepted
until the time or ratio set for the device/label access
service processing setting of the CPU parameters is
reached.
Page 91 Device/label
access service processing
constant wait function
Interrupt
function
Multiple interrupt
function
When an interrupt occurs while an interrupt program
triggered by another cause is running, stops the program
if its priority is lower than that of the new interrupt, and
runs the higher-priority program whenever its execution
condition is satisfied.
Page 129 Multiple interrupt
function
Output mode setting when the
status changed from STOP to
RUN
Sets the output (Y) status when the operating status of
the CPU module is switched from STOP to RUN.
Page 137 Output mode at
operating status change
(STOP to RUN)
Device/label memory area setting Sets the capacity of each area in the device/label
memory.
Page 142 Device/label
memory area setting
Internal buffer capacity setting Sets the capacity of the area (internal buffer) used by the
system to temporarily store the results of data logging.
Page 283 Internal buffer
capacity setting
SD memory card forced disable Forcibly disables an access to the SD memory card
without powering off the system even when the function
that accesses the SD memory card is being executed.
Page 147 How to forcibly
disable the SD memory card
with a special relay
Clock function Manages time for the system functions such as time
stamps for the event history function and date information
for the data logging function.
Page 185 CLOCK
FUNCTION
Writing data
to the CPU
module
Writing data to the
programmable
controller
Writes the specified data of the project with the
engineering tool to the memory of the CPU module.
• Page 189 Writing Data
to the Programmable
Controller
• GX Works3 Operating
Manual
Online change
(ladder block)
Writes the part of a program edited on the ladder editor
using the engineering tool to the running CPU module in
units of ladder blocks. Edited contents spanning multiple
files or multiple portions can be written to the CPU module
at once.
• Page 189 Online
change (ladder block)
• GX Works3 Operating
Manual
Online change
(files)
W
r
ites programs and other data to the running CPU
module in units of files.
• Page 193 File batch
online change
• GX Works3 Operating
Manual
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