9300 Servo PLC
System blocks
2.9 Digital master frequency input (DF_IN_DigitalFrequency)
2-32
9300ServoPLC EN 1.4
2.9.1 Digital frequency input X9
• The digital frequency input X9 is dimensioned for signals with TTL levels.
• You can use C0425 to adapt the drive to the sensor/encoder that is connected or to the
preceding drive controller in the case of digital-frequency cascade or digital-frequency-bus
operation.
C0425 Constants in increments per turn
0 256 inc/rev
1 512 inc/rev
2 1024 inc/rev
3 2048 inc/rev
4 4096 inc/rev
5 8192 inc/rev
6 16384 inc/rev
• The input of a zero track is optional.
• The evaluation of the following digital-frequency input signals is possible under C0427:
• The process image of SB DF_IN is newly created again for each task in which it is applied.
C0427 = 0 (2-phase)
A
A
B
B
Z
Z
Abb. 2-18 Signal sequence with phase shift (CW rotation)
• CW rotation:
– Track A leads track B by 90 ° (positive value at
DFIN_nIn_v
).
• CCW rotation:
– Track A lags track B by 90 ° (negative value at
DFIN_nIn_v
).
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