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[
Speed change using the comparator]
When the comparator conditions are met, you can use the function which changes the operation data to
the values stored as pre-register data. This function is used to change the speed when a specified
position is reached.
Also, comparator 5 has a pre-register function, and can be specified for use in changing the speed at
specified positions. In this case, use the "Pre-register set command (4Fh)," to specify several sets of
speed data.
If the speed change data (data used with set commands) are left in Pre-registers 1 and 2 when the
current operation completes (Example 1), or if the speed change data is left in Pre-register 1 and some
next operation data exists in Pre-register 2 (Example 2), the PCL will ignore the speed change data and
shift the data in the pre-registers.
Then, in Example 2, the PCL will start the next operation after shifting the data in the pre-registers.
Example 1
(PFM=11) (PFM=00)
Speed change
data 2 (set)
Speed change
data 1 (set)
current operation
Current
operation data
(set)
Pre-register 2
Pre-register 2
Speed change data
2 undetermined
Speed change data
2 undetermined
Speed change data
1 undetermined
Pre-register 1
Complete
Pre-register 1
Register
Register
Example 2
(PFM=11) (PFM=01)
Speed change
data 2 (set)
Speed change
data 1 (set)
operation
Current
operation data
(set)
Pre-register 2
Pre-register 2
Speed change data
2 undetermined
Speed change data
2 undetermined
Speed change data
1 undetermined (set)
Pre-register 1
Complete current
Pre-register 1
Register
Register
Set a pre-register <PRSET: Operation command>
Identify the pre-register details as speed change data.
[Operation command]
4Fh