Access To The Cpx Terminal Via Dpv1; Reading And Writing Data Records - Festo CPX-FB13 Electronic Manual

A. Technical appendix
A.3

Access to the CPX terminal via DPV1

A.3.1 Reading and writing data records
A-14
By means of DPV1 commands you can access all the data and
parameters which the CPX terminal provides:
– Parameter and status information
– System data
DPV1 commands are only available if you configure the field
bus node as follows:
– FB13: DP slave system diagnosis
You can easily access the system data by means of the PROFI-
BUS configuration software. Background information can be
found in the CPX system manual P.BE-CPX-SYS-.. .
Use the function module SFC 59 for reading and SFC 58 for
writing data. First set the DPV1 compatibility S7-conform as
follows:
Set the DPV1 compatibility
Parametrize the field bus node S7-conform if you are working
with a Siemens master:
1. Proceed as described in section 2.2.2, double-click in step
1 but on the line of the field bus node in the configuration
table.
The mask "Properties – DP slave" appears.
2. Select the register "Parameter Assignment" and modify
the value of the "DPV1-Services" to "S7 compatible"
(see following diagram).
3. Confirm with OK.
Festo P.BE-CPX-FB13-EN en 0112NH