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Festo VTEM - Changing an Active Parameter Set; Requirements; Sequence; Example

Festo VTEM
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98
Festo — VTEM — 2021-05f
Parameterisation
Even in the case where the parameterisation is transferred to the Motion Terminal controller by the
higher-order controller at every system start, this parameterisation should additionally be saved once,
as persistent data, on the Motion Terminal controller. Otherwise, the teach-in data determined during
a teach-in run or the reference values for a Motion App may be lost (
è
3.7.6 Validity of teach-in data
based on parameter changes).
4.6 Changing an active parameter set
Changing the active parameter set is controlled using the channel "valve settings" (channel = 15)
(
è
3.5.4.1 Structure of the process data in transfer mode). The “Value” section contains the number
of the parameter set to be activated.
4.6.1
Requirements
The Motion Terminal boot procedure is completed.
There are no Motion Apps currently running on the valve in question (valve state ≠ "2" (running)).
4.6.2
Sequence
To set the active parameter set, the following settings must be selected in the transfer mode:
Operating mode of the valve (valve mode): 63 (transfer mode active) (PDO byte 0, bits 5 … 0 =>
111111
2
)
Channel (channel): 15 (valve settings) (PDO byte 1, bits 4 … 0 => 01111
2
)
Transfer control (transfer control): 1 (download) (PDO byte 1, bits 7 … 5 => 001
2
)
Addressing of data transfer (addressed target): 0 (PDO byte 2 => 0)
Index (index): 1 (PDO byte 3 => 1) -
Value (value): number of the parameter set that should be actively switched (PDO bytes 5 … 4)
4.6.3 Example
Parameter set 4 is to be selected as the active parameter set.
Example of output data for changing the active parameter set
PDO byte 1 PDO byte 0
Command
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
0 0 1 0 1 1 1 1 ... ... 1 1 1 1 1 1
transfer control
= 1 (download)
channel = 15 (valve settings) valve mode = 63 (transfer mode)
PDO byte 3 PDO byte 2
Parameter
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0

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