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Technology alarm 902 - Leading accuracy limited

Created by: eltiu at: 7/1/2022 6:08 PM (1 Replies)

7/1/2022 6:08 PM	Rate (0)
eltiu Advanced Member Joined: 9/10/2009 Last visit: 11/20/2023 Posts: 62 Rating: (0)	Hello: I have two Drive Controllers with the Cross PLC configuration, with a distributed master axis. I need to synchronize a slave axis with the master axis using the TO_Proxy. Everything seems Ok, but a warning that appears, the Technology alarm 902, "leading accuracy limited". I can't work with the axis, because I run the master but in the slave side the motion status, position and velocity don't change. The status bits are ok, In operation, External leading valid,,, Any suggestion? Kind regards

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7/4/2022 6:23 PM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 12/11/2023 Posts: 5729 Rating: (771)	Hello, 3.10.3 Technology alarm 902 (S7-1500T) Decrease the configured delay time. https://support.industry.siemens.com/cs/ww/en/view/109781853 3.4.4 • Time from the cross-PLC synchronous operation For cross-PLC synchronous operation, the output delay of the leading value at the locally coupled following axes is automatically taken into account. The displayed value is equal to the leading value delay and corresponds to the delay time entered at the leading axis or at the external encoder. You configure the delay time under "Technology object > Configuration > Leading value settings" (<TO>.CrossPlcSynchronousOperation.LocalLeadingValueDelayTime). https://support.industry.siemens.com/cs/ww/en/view/109781851
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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