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16. INDEXER POSITIONING OPERATION
16.7.3 Automatic operation mode 2 (Shortest rotating indexer)
In this operation mode, the servo motor autom atically changes the direction for the shortest distance and
executes positioning.
(1) When not using the remote register
Select the station number using 8-bit device of the next statio n selection 1 to 8 (RYnA to RYnE, and
RY(n 2)3 to RY(n 2)5), and execute positioning. For the servo motor s peed and acceleration/
deceleration time constant during operation, the value set in the point table is used.
(a) Device/Parameter
Set the input devices and parameters as indica ted below.
Item Device/Parameter Setting description
Indexer positioning operation
selection
Parameter No.PA01 1 : Select the indexer positioning
operation.
Operation mode selection 1 (RYn6) Turn on MD0. Automatic operation mode 2
(Rotation direction specifying indexer)
selection Operation mode selection 2 (RYn7) Turn on MD1.
(b) Other parameter settings (Setting the number of stations)
Set the number of stations in the parameter No.PC46 . Setting is the same as that for the automatic
operation mode 1. Refer to (1) (b) 2) in sect ion 16.7.2.
In the automatic operation mode 2, the station No. direction selection (parameter No.PA14) is no t
used.
(c) Setting the speed data
Set the servo motor speed, acceleration time cons tant, and deceleration time constant in the point t able
number 1 to 8. Setting is the same as that for the automatic operation mode 1. Refer to (1) (c) in secti on
16.7.2.
(d) Operation
Select the station number for positioning, us ing 8-bit device of the next station selection 1 to 8 (RYnA to
RYnE, and RY(n 2)3 to RY(n 2)5).
(Note) Device
2 stations occupied 1 stations occupied
RY(n 2)5 RY(n 2)4 RY(n 2)3 RYnE RYnD RYnC RYnB RYnA
Station No.
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 1
0 0 0 0 0 0 1 0 2
0 0 0 0 0 1 0 1 3
1 1 1 1 1 1 1 0 253
1 1 1 1 1 1 1 1 254
Note. 0: OFF
1: ON