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RDSYSST migrate from s7-3 to s7-1500

Created by: honghai0902 at: 5/16/2024 6:52 AM (5 Replies)

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5/16/2024 6:52 AM	Rate (0)
honghai0902 Posts: 4 Rating: (0)	Hello guys. Currently, I'm working on migrating a project from S7- 300 to S7-1500. I have a problem with RDSYSST system function. Here is my code L W#16#294 // OMH T "DB_ALR_Profinet".SFC51_SZL_ID L W#16#64 T "DB_ALR_Profinet".SFC51_INDEX As far as I know, when migrating from s7-300 to s7-1500 I can use some instructions such as "RDREC", "GET_DIAG", "GEO2LOG", "DeviceStates", "ModuleStates", "RALRM", "LED". But I'm not sure which instruction will work with my code. Could you guys please give me some solution to fix that? Best Regard Attachment Code RDSYSST.jpg (550 Downloads)
honghai0902 Posts: 4 Rating: (0)	Last edited by: Jen_Moderator at: 05/16/2024 10:33:52 Text formatting optimized.
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5/19/2024 12:43 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 1/13/2026 Posts: 4847 Rating: (512)	honghai0902 Hello guys. Currently, I'm working on migrating a project from S7- 300 to S7-1500. I have a problem with RDSYSST system function. Here is my code L W#16#294 // OMH T "DB_ALR_Profinet".SFC51_SZL_ID L W#16#64 T "DB_ALR_Profinet".SFC51_INDEX As far as I know, when migrating from s7-300 to s7-1500 I can use some instructions such as "RDREC", "GET_DIAG", "GEO2LOG", "DeviceStates", "ModuleStates", "RALRM", "LED". But I'm not sure which instruction will work with my code. Could you guys please give me some solution to fix that? Best Regard 1500 has the same function available, RD_SYS_T. I attached a picture of the insoftware help of TIA about the function. Attachment RD_SYS_T.jpg (500 Downloads)

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5/21/2024 4:55 AM	Rate (0)
honghai0902 Posts: 4 Rating: (0)	RDSYSST in S7-300 is used for Reading a System Status. It's not used for reading time. I check the document on how to migrate from s7-300 to s7-1500 already. The document prefers some alternative instructions but I don't know exactly which instruction will fit my new code in s7-1500 Hati honghai0902 Hello guys. Currently, I'm working on migrating a project from S7- 300 to S7-1500. I have a problem with RDSYSST system function. Here is my code L W#16#294 // OMH T "DB_ALR_Profinet".SFC51_SZL_ID L W#16#64 T "DB_ALR_Profinet".SFC51_INDEX As far as I know, when migrating from s7-300 to s7-1500 I can use some instructions such as "RDREC", "GET_DIAG", "GEO2LOG", "DeviceStates", "ModuleStates", "RALRM", "LED". But I'm not sure which instruction will work with my code. Could you guys please give me some solution to fix that? Best Regard 1500 has the same function available, RD_SYS_T. I attached a picture of the insoftware help of TIA about the function.
honghai0902 Posts: 4 Rating: (0)	Last edited by: honghai0902 at: 05/21/2024 04:58:13
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5/21/2024 8:19 AM	Rate (0)
qwazee Platinum Expert Joined: 3/30/2020 Last visit: 12/11/2025 Posts: 5656 Rating: (1082)	The following is from rough research and not actual experience. The materials that is worth studying from the in-software help: RDSYSST: Read system status list SZL-ID W#16#0x94 - status information for rack/station (specifically ID = W#16#0294) Migration of the instruction RDSYSST ModuleStates: Read module status information of a module GET_DIAG: Read diagnostic information It is probably the instruction ModuleStates which you are looking to use. I am not sure which device is at index = W#16#64 (100) in the original code. It is possibly the central controller. The hardware identity for the device needs to be placed in the ModuleStates instruction.
	Activities of this user is voluntary. There is no obligation or liability placed on this user. Though optional, your 'please' and 'thank you' is highly valued.
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5/21/2024 8:19 AM	Rate (0)
Prof. Frink Platinum Member Joined: 7/5/2013 Last visit: 1/13/2026 Posts: 3274 Rating: (526)	Hi honghai, have a look at following FAQ please: Migrate "RDSYSST" (SFC51) instruction to S7-1500 Regards, Frink
	Pi is exactly three! All you have to do is think of things which people need but which don’t exist yet.
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This contribution was helpful to 1 thankful Users qwazee

9/23/2024 5:08 PM	Rate (0)
termolar Joined: 5/30/2023 Last visit: 1/10/2026 Posts: 54 Rating: (1)	Were you able to get communication status from an S7-1200 and an S7-300 from 2 different projects? 1200 on TIA and 300 on Step 7? Is it possible to use RDSYSST if the 1200 is not included in the 300 project?
	Regards
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