10/22/2019 4:51 PM | |
Joined: 9/27/2006 Last visit: 10/17/2024 Posts: 12289 Rating: (2687) |
Hello Matrex; Reading parameters from a MM4 drive uses a different mechanism than simply sending commands and speed reference. You say you use 2 words to communicate to the drive, you seem to have setup a PPO3 telegram configuration. This gives you access to the Control word (Start, Stop, direction of rotation...) and the Speed reference/status, as you have expperimented. Note that the Control word must see a rising edge on the LSB if you want the drive to start (change 0--> 1), so you must write 047E, then 047F (in HEX) to the Control word. If you use a DWORD, you write to bith the Control Word and the Speed reference at the same time, so you must write 047E 4000, then 047F 4000 to that DWORD address forr the drive to start,. You will find all the required information here: Operating Instructions: MICROMASTER PROFIBUS Optional Board https://support.industry.siemens.com/cs/us/en/view/6586565 In the following document link there are 4 sample programs.the first 2 show examples of PPO3 programming, using Move instructions or SFC15/14 techniques. The last 2 show how to read/write parameters on the drive, using SFC 15/14 (mandatory, as explained in the manual above). MICROMASTER 4 (MM4), SINAMICS G120 (CU240S/D, DP/DP-F, PN/PN-F): Essentials for PROFIBUS and PKW-mechanism. https://support.industry.siemens.com/cs/us/en/view/8894584 Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 10/22/2019 17:06:55 |
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