Lyle
Member
The software i am using is STEP7 and the hardware is C7-635 Touch screen and a MM440 drive.Can anyone help me on how to send data to the drive to start and stop it,change the frequency and to change the data sets.Thanks.
C7-635 and MM440 comunication over profibus DP
- Thread starter Lyle
- Start date
Here is a thread with lots of discussion and links:
http://www.plctalk.net/qanda/showthread.php?t=33083
I have heard that there is a problem with the C7 devices that they dont really have retentive memory. You may have a problem there.
(Siemens would do us and themselves a favor if they scrapped the lot).
http://www.plctalk.net/qanda/showthread.php?t=33083
I have heard that there is a problem with the C7 devices that they dont really have retentive memory. You may have a problem there.
(Siemens would do us and themselves a favor if they scrapped the lot).
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