6
FUNCTIONS
6.26 Device Initial Value
6 - 197
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
(3) Timing when device initial values are written to specified devices
The CPU module writes the data of the specified device initial value file to the
specified device or intelligent function module buffer memory when the PLC is
powered on or the CPU module is switched from the STOP status to the RUN status.
(4) Available devices
*1
Device initial values can be used by the following devices:
* 1 : Refer to Section 10.1 for the available ranges.
* 2 : The extended data register (D) is also included.
* 3 : The extended link register (W) is also included.
Figure 6.119 Sequence up to device initial value write
• Timer present value (T) • Link special register (SW)
• Retentive timer present
value (ST)
• File register (R)
• Counter present value (C) • File register (ZR)
• Data register (D)
*2
• Intelligent function module device
(U \G )
• Special register (SD)
• Link register (W)
*3
• Link direct device (J \W ,J \SW )
Device
initial
(At power off on, reset
cancel or STOP RUN)
file
Designated
device
Program memory
initial value
range setting
Device
initial value
data setting
Device
Device initial
value writing
Device initial value writing
(At power off on, reset
cancel or STOP RUN)
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