A.3.3 Examples For Dpv1 Access - Festo CPX-FB13 Manual

Cpx terminal. cpx field bus node. field bus protocol profibus-dp according to en50170
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A. Technical appendix

A.3.3 Examples for DPV1 access

A−18
Example of access to data records
In the following, the module parameter Reaction after short
circuit/overload of the load voltage supply" is modified on
module no. 3 from Fig. 2/3 in the configuration example.
Since slot number = module number + 100 (see above),
slot 103 should be used for module no. 3 in the following.
As an initial setting, bit 1 of parameter 1 has the value
1" = Switch voltage on again".
1. Assign the command box as follows:
Byte
1
Contents
Slot no.
Example
103
2. Then transfer the value 0" with the Write Box.
The module is now parameterised to Leave voltage
switched off" in the event of a short circuit/overload.
Example of access to the diagnostic memory
In the following, entry 0 of the diagnosis memory will be read
out indirectly via the command box.
1. Assign the command box as follows:
Byte
1
Contents
Slot no.
Example
1
2. Read out the diagnostic memory with the Read Box.
2
3
Index no.
Offset
21
1
2
3
Index no.
Offset
21
0
Festo P.BE−CPX−FB13−EN en 0811c
4
4

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