Mitsubishi Electric MELSEC iQ-R Series User Manual page 27

■Execute type/Enable type
Some MCFBs are executed at an Execute input, and the others are executed at an Enable input. The basic operation of each
FB is shown below. However, some FBs have different specifications. For details, refer to each FB specifications.
[Basic operation of Execute type FB]
• The Execute type FB reads the input parameters at a rising edge of Execute, then it starts operation. Once operation is
started, even if setting FALSE to Execute, the operation will be continued until it is completed.
• When operation is started, only one of outputs among Busy, Done, Error, and CommandAborted, turns TRUE.
• Done, Error, ErrorID, and CommandAborted are reset at a falling edge of Execute. Busy and Active are not affected.
• When changing the input parameter during operation, the change is reflected at restart (retrigger) of Execute or continuous
update using the ContinuousUpdate input. For details, refer to the following.
Page 106 Retrigger/Continuous Update
• AxisName.Md.Analyzing/AxesGroupName.Md.Analyzing turn TRUE from the rising edge of Busy,
AxisName.Md.Analyzing/AxesGroupName.Md.Analyzing turn FALSE after starting the operation.
Basic operation of Enable type FB is shown below.
[When the FB is normal]
Start at rising edge
Execute
When Execute is FALSE,
only one cycle is TRUE
Done
Busy
AxisName.Md.
Analyzing
Active
Error
CommandAborted
ErrorID
Position
0
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