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Communication via CC-Link
4.6
Command code execution
Command code
With the command execution sequence you can read and change the
execution
parameters of the converter. The CBL converts the Command code
execution into a PKW mechanism of the MASTERDRIVES converter.
This conversion needs a sequence of command code execution
which is described in next chapters.
The parameters are explained in the documentation of the converter
and the communication parameters of CBL in chapter 5 "Start-up of the
CBL".
A single command execution sequence is started by the user by writing
a command code in RWwm+2. To change, the new value of the
parameter is written into written data (RWwm+3). After that the
sequence is activated with the control bit command code execution
request . After CBL has handled the command it acknowledges by
writing a reply code (RMrm+2) and read data (RMrm+3) and then
activating command code execution complete .
Command code
execution request
Command code
Command code
execution complete
Reply code
Fig. 4-6
The CBL handles the PKW mechanism with two 4-word-structures (16
bit words):
PKW request structure
PKW reply structure
The next chapters explains:
Chapter 4.7 "Parameter area (PKW)" explains you how the PKW
mechanism works.
Chapter 4.8 "Handling PKW via CC-Link" tells you how you can read or
change parameters.
4-10
command code
Command code execution sequence
PKE
INDEX
PWE1
PKE
INDEX
PWE1
Operating Instructions
reply code
PWE2
PWE2
6SE7087-6NX84-0GB0
Siemens AG
SIMOVERT MASTERDRIVES
03.99
RYnF
RWwm+2
RXnF
RWrm+2
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