Chapter 3 Software Functions
3.2.3
Variable initialization
Variables are initialized automatically when the controller starts up (at power-on
and when the mode changes from HALT to RUN).
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Table 3-5 Variable initialization
EA
Name
0
Instance variable
1
Temporary variable
2
System variable
4
User variable
5
EC bus variable
Tag instrument variable
6
(parameter)
7
Tag instrument variable (data)
8
General variable
9
I/O variable
10
Remote I/O variable
Note
(Note 1):SV is continued. MV starts from the final value at power-off or the final value at HALT
stop. The M mode is set to Mode (MODE).
(Note 2):Starts up after all I/O data is input.
(Note 3):MV output outputs the MV value.
Description
Zeroed
Undefined
Continued
Continued
Continued
Continued
Continued (Note 1)
Continued
Input: Continued (Note 2)
Output: Zero output initially (Note 3)
Input: Continued (Note 2)
Output: Zero output initially (Note 3)