116
APPX
Appendix 3 Buffer Memory
Command area for module invalidation
For the I/O module with diagnostic functions with its safety module function enabled, set this area to 1234H to disable the
safety module function in normal mode.
■
Buffer memory address
The following table shows the buffer memory address of this area.
■
Enabling the setting
Turn on and off 'Operating condition setting request' (Y12) to enable the setting.
If this area is set to a value other than1234H and 'Operating condition setting request' (Y12) is turned on and
off, the safety module function is not disabled.
■
Default value
The default value is set to 0000H.
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Procedure for disabling the safety module
For details, refer to the following.
Page 118 Disabling the Safety Module
Validation status area
Whether the safety module function is enabled or disabled is stored.
If the I/O module with diagnostic functions is started up in normal mode while the stored value of this area is Enable (1), an
error (start-up in normal mode with safety validated (error code: 3040H)) occurs.
■
Buffer memory address
The following table shows the buffer memory address of this area.
Buffer memory name
X/Y0 to X/YF
Command area for module invalidation
5376
Stored value
Description
Remarks
0
Disable
Indicates that the safety module function of the I/O module with diagnostic functions is disabled.
1
Enable
Indicates that the safety module function of the I/O module with diagnostic functions is enabled.
Buffer memory name
X/Y0 to X/YF
Validation status area
5377
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