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(e) Online change of the CPU module with executional conditioned device test
registration
1) Online change (ladder mode)
If any executional conditioned device test setting has been registered in the ladder block to be changed
online, the CPU module disables the corresponding setting.
Example 1) Step numbers of registrations 1 to 3 are specified in the executional conditioned device test
settings. When the ladder block including the registration 2 is changed online, the registration 2 is
disabled during execution of the online change function.
Since the registrations 1 and 3 are not included in the change target program, they are not disabled.
Example 2) When multiple ladder blocks are to be changed online, ladder blocks between the change target
ladder blocks will be included in the change target.
For this reason, if the online change function is executed as shown in Figure 6.48, all registrations 1 to
3 are disabled.
6 - 56
Registration 1
Registration 2
Registration 3
*
The shaded area is the ladder block to be changed online.
Figure 6.47 Changing a ladder block online
Registration 1
Registration 2
Registration 3
*
The shaded area is the ladder block to be changed online.
Figure 6.48 Changing multiple ladder blocks online
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