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Execution conditions of editing cam patterns
The editing of cam patterns by programs can be executed when the following three conditions
are met.
• The synchronous operation is canceled for all axes. (The synchronous control cancel active
annunciation flags of all axes are on.)
• All axes are stopped. (The operation done flags of all axes are on.)
• Parameters are set correctly.
When executing the cam table reading request (Y8) and cam table rewriting request (Y9)
simultaneously, the cam table reading request (Y8) takes priority. In this case, the execution
of the cam table rewriting request (Y9) results in the abnormal end, and the response code
(HFF21) is stored in the unit memory (UM66F99).
Reading cam patterns
The procedure of reading cam pattern data in the cam pattern setting area is as follows.
①
Specify a cam pattern number you want to read for the cam pattern number (UM66F40).
②
Turn on the cam table reading request (Y8).
③
Check if the cam pattern reading result is "0000H (Normal end)" when the cam table reading done
annunciation (X8) turns on
When the cam table reading done annunciation (X8) turns on, the setting data from the
section 1 in the cam pattern editing area to the specified number of cam pattern setting
sections will be read.
Changing parameters
User program
Cam pattern no.
Cam table reading request (Y8)
Cam table reading done annunciation (X8)
Cam pattern data
(UM66F42-UM68F93)
Cam pattern reading result
UM66F40
UM66F97
XXX
(UM66F40)
ON
OFF
ON
OFF
XXX
XXX H
(UM66F98)
Cam pattern editing area
Cam pattern edit no.
Number of set sections
Shift amount
Start phase for sections 1 to n
Displacement
Cam curve no.
Internal cam pattern data
No.n
No.3
No.2
No.1
1
XXX
0000H
9.6 Electronic Cam Function
Reading cam tables
(Y8)
9-45
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