MPH-02, MPB-02, MPD-02
Handling, Diagnostic and Service Functions
10-83
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Read Access to a Parameter
As a basic principle, read access to a parameter is carried out as follows:
IDN of the parameter, data block element number, r (Carriage
Return)
The drive then displays the content of the data block element that was
addressed.
In order to access the operating data of the P-0-4040 parameter, for
example, the following input is required:
Step 1
Send request e.g.:
"P-0-4040,7,r" (CR)
Step 2
Drive received character.
Drive repeats request (echo)
Character sequence ":>" found in
receiver buffer?
Compare ok?
Transmission error
Step 4
Delete request in receiver buffer.
All characters up to 1st "CR"
(inclusive).
Data or error number
now contained in the
receiver buffer
Step 3
To check transmission compare
request with receiver buffer (string
compare).
yes
yes
no
Next character "#" in
receiver buffer
Evaluate parameter data. Read
access completed.
no
contents of receiver buffer:
"P-0-4040,7,r"(CR)"#xxxx"(CR)"E01:>"
or
"P-0-4040,7,r"(CR)"1C3Fh"(CR)"E01:>"
Timeout ?
Communication with drive not
possible
-> check address
-> check setting
-> check connection
no
no
yes
FD5000B1.WMF
Error occurred during
parameter access.
Error code: #xxxx
yes
Fig. 10-43: Read access to a parameter
Courtesy
of
CMA/Flodyne/Hydradyne
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Control
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426-5480
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