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Monitoring the absolute actual value G1_XIST2

Created by: mehranlll at: 4/12/2025 6:29 AM (2 Replies)

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4/12/2025 6:29 AM	Rate (0)
mehranlll Joined: 12/26/2021 Last visit: 6/7/2025 Posts: 9 Rating: (0)	Hello Iam using 1200 plc with v90 servo(PN).I have configured Telegram 3. Is it possible to read the absolute value of the encoder?(G1_XIST2) If the answer is yes.Please advise how I can read this value. Manual Description : In order to monitor G1_XIST2 in the TIA Portal you have to create a project without the respective technology object and load it into the S7-1500. Then you can, forexample, write into the IO address of the G1_STW encoder control word with a 2000hex value table and thus request the cyclic transmission of the absoluteencoder value. Regards Mehran Attachment Axis_X Encoder.jpg (243 Downloads)

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4/14/2025 12:37 PM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 8/29/2025 Posts: 6037 Rating: (828)	Dear mehranIII, by setting G1_STW.13 =1 (Request value cyclic transfer of the absolute position value in Gn_XIST2) the absolute value will be transferred cyclic into Gn_XIST2. The G1_STW is located in PZD5 of telegram 3. In G1_ZSW.13 it is possible to read out that the absolute position value is transferred cyclic. Please find this information in detail in the operating instructions (chapter 8.3/8.4) of the V90 under the following link: https://support.industry.siemens.com/cs/de/en/view/109824516
	Last edited by: Wit_Moderator at: 04/15/2025 08:07:21 Link optimized With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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This contribution was helpful to 1 thankful Users mehranlll

4/15/2025 6:24 AM	Rate (0)
mehranlll Joined: 12/26/2021 Last visit: 6/7/2025 Posts: 9 Rating: (0)	Thanks for your reply "Technology Team" I set this value G1_STW.13 =1, but the value of G1_XIST2 is still zero. Can this setting in G1_STW.13 be applied to any position in the axis, or does it have special conditions? This value that is transferred to G1_XIST2 is the current position of the axis? I have no idea about this position, is it possible to have the value of the axis position in homing as an absolute value in the program? Technology Team Dear mehranIII, by setting G1_STW.13 =1 (Request value cyclic transfer of the absolute position value in Gn_XIST2) the absolute value will be transferred cyclic into Gn_XIST2. The G1_STW is located in PZD5 of telegram 3. In G1_ZSW.13 it is possible to read out that the absolute position value is transferred cyclic. Please find this information in detail in the operating instructions (chapter 8.3/8.4) of the V90 under the following link: https://support.industry.siemens.com/cs/de/en/view/109824516 With regards
	Last edited by: mehranlll at: 04/15/2025 06:28:01 Last edited by: Wit_Moderator at: 04/15/2025 08:08:15 Link optimized
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