30.15.1 Logic Program Settings Guide

Logic Program

Select whether to [Enable] or [Disable] the logic features.

Register Variable

Select [Variable Format] or [Address Format] to register an address.

Retentive Area Settings

Click [Retentive Area Settings] to display the [Retentive Area Settings] dialog box.

The retentive/volatile points can be specified for symbol variables in [Variable Format]. The retentive/volatile ranges can be specified for symbol variables in [Address Format].

• Variable Format

You can specify only the variable points for retentive/volatile.

You can configure the retentive/volatile settings individually in the [Symbol Variable] window, the [Address] window or [Properties] after creating a new variable.

Please note that this setting is volatile when creating a new variable.

• Address Format

For each address, specify the retentive/volatile range. With this setting, all the addresses within the retentive area will be retained, and the address values within the clear area will not be retained.

Please note that all the variables allocated to I/O (X, Y, I, Q) will be set to volatile. You cannot change the settings to retain variables between sessions. Furthermore, you can only choose the retentive setting for PID Variables (U).

• Initialization Settings of Number of Retentive/Volatile

  Symbol Variable	Reset		For Address Format
  	Retentive	Volatile
  Bit Variable	4000 points	4000 points	M_
  Integer Variable	4000 points	4000 points	D_
  Float Variable	64 points	64 points	F_
  Real Variable	64 points	64 points	R_
  Timer Variable	256 points	256 points	T_
  Counter Variable	256 points	256 points	C_
  Time Variable	32 points	32 points	J_
  Date Variable	32 points	32 points	N_
  PID Variable	8 points	0 points	U_