pauljurczak (Customer) asked a question.
Is modifying an index in motion allowed on LS Electric L7PA010U-AD?
I have to execute many single motions (indexes) with positions unknown beforehand and delivered in real time. I would like to execute them as the same index 0 with different corresponding distances. Action of the index 0 is set to Stop. Can index's distance be updated (written to) while the motion is still in progress? What is the earliest time on this diagram when distance of index n1=0 can be updated:
Do I have to use a pair of indexes, one in motion, the other one being modified, for this scheme to work?
XPM_DST is available to perform direct start motion. This allows you to do motion without needing to use the position table.
Where can I find documentation of XPM_DST? I searched "L7P Series User Manual" release 2023.11 and there is no "XPM_DST" term in it. Is this command available through Modbus RTU? I see this command in LS Electric PLC manual, but I have L7PA010U-AD servo drive.
XPM_DST is part of the XEM CPU program.
Pulse train help website :https://cdn.automationdirect.com/static/helpfiles/ls_plc/Content/C_ProcedureTopics/LP516.htm?tocpath=%20Procedures%7CXGB%20Motion%7CXGB%20Single%20Axis%20Function%20Blocks%7CDirect%20Start%7C_____0
How is it applicable to L7PA010U-AD servo drive without using LS Electric PLC? Is there another servo drive with that functionality?
It is only applicable with the LS Electric PLC. What controller are you using?
I'm using P1AM-200. Can you respond to my original question, i.e. editing the index table in motion?
You can try using the ISELx digital inputs on the drive to see if it allows you to change it while one is running. If that doesn't work, you will have to use a pulse/direction motion card from your PLC if the P1AM-200 supports it (Check the documentation).
It seems that the non-running index can be modified while the other one is being executed. I'm not using ISELx digital inputs, only Modbus RTU communication. I have issues with transmission quality and motion parameter setting. Details in a separate post.
XPM_POR can be used to perform a position override.
ADC, if you do mind me asking, Is there another servo drive model from LS electric that could do XPM_DST from different(non ls electric) PLC?