Rules For Setting The Sampling Time - Siemens Sinamics S120 Function Manual

Setting the pulse frequency in online operation using STARTER
Enter the minimum pulse frequency in p0113. For isochronous operation (p0092 = 1), you
can only set the parameter so that a resulting current controller cycle with an integer multiple
of 125 μs is obtained. The required pulse frequency can be set after commissioning (p0009 =
p0010 = 0) in p1800.
Table 12- 24 Pulse frequency for isochronous operation
Control type
When commissioning is exited (p0009 = p0010 = 0), the effective pulse frequency (p1800) is
appropriately pre-assigned, depending on p0113, and can be subsequently modified.
Setting the sampling times
If sampling times are required which cannot be set using p0112 > 1, then you can directly set
the sampling times using p0115. To do so, p0112 must be set to "0" (Expert).
If p0115 is changed online, then the values of higher indices are automatically adapted.
We do not recommend that p0115 is changed when STARTER is in the offline mode. The
reason for this is that if the parameterization is incorrect, then the project download will be
interrupted.
12.12.3

Rules for setting the sampling time

The following rules apply when setting the sampling times:
1. The current controller sampling times of the drive objects (DOs) and the sampling times
2. The sampling times of the inputs/outputs (p4099[0...2]) of a TB30 must be an integer
3. When Safety Integrated Extended Functions are used (see Safety Integrated Function
4. For Active Line Modules (ALM) in booksize format, only a current controller sampling time
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Servo
Vector
of the inputs/outputs of the Control Unit, TM and TB modules must be a multiple integer
of 125 µs. The DRIVE-CLiQ lines with servo-controlled axes with 31.25 μs or 62.5 µs
controller sampling time are an exception.
multiple of the current controller sampling time (p0115[0]) of a drive object connected to a
DRIVE-CLiQ group.
– Sampling time of the inputs/outputs p4099[0...2]: for TB30
Manual), the sampling time of the current controller (p0115[0]) must be 31.25 μs, 62.5 μs,
125 μs, 250 μs, 375 μs, 400 μs or .500 μs.
of 125.0 µs or 250.0 µs can be set.
12.12 System sampling times and number of controllable drives
p0115[0]
Current controller cycle / µs
250
125
500
250
Basic information about the drive system
p0113
Pulse frequency / kHz
2
4
1
2
769