2/6/2024 5:51 AM | |
Joined: 2/21/2022 Last visit: 7/12/2024 Posts: 6 Rating: (0) |
HI ALL I am using S7-1200 with signal module SM1241 for RS 485 communication. I have already communicating four Multifunction Meters with this SM 1241 and is working good. i have used MB_COMMUNICATION_LOAD and MB_MASTER for every multifunction meter separately. however when i increased the numbers of slave, the MB_MASTER block gets error 16#8070. also this error code not found in help menu of tia portal. i am using TIA PORTAL v17. Please help me .What does this error mean 16#8070? Thanks ------------------------------------------------------------------------------------------ |
Last edited by: rabindra_rabi at: 02/06/2024 06:01:15Last edited by: Jen_Moderator at: 02/07/2024 10:13:13New subject after splitting |
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2/7/2024 12:02 PM | |
Joined: 4/28/2015 Last visit: 2/7/2024 Posts: 10533 Rating: (820)
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Hello,
I think that increase of devices number isn't problem here but wrong code implementation by your side. Technically you can have max number of Slaves prepared with your code as Modbus allows, you need only prepare correct handling of each device. We don't know nothing how you did your code so I expect basically that you're use some timer for polling Slaves and is accuratelly prepared for exact number of devices, looks like. I don't have now access to this value 16#8070 what means but if you look at TIA system manual and start find for this value, with some next findings you can see quite logical answer. Just for sure, you're describing error code but you have also ERROR true? pls be careful to differ STATUS values with errors and just only as status of some internal block's processing. |
With best regards... |
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3/26/2024 8:00 AM | |
Joined: 6/19/2019 Last visit: 7/10/2024 Posts: 697 Rating: (73) |
In TIA help enter code 8070 and found this one: |
This contribution was helpful to1 thankful Users |
3/26/2024 10:12 AM | |
Joined: 3/30/2020 Last visit: 8/19/2024 Posts: 4698 Rating: (975) |
It would help if you gave us a peek on how your program is structured. The instruction has an enable. It is not visible when using SCL as coding language; you simply add the "EN := ???," portion. use the enable to ensure that only the minimum count of instructions is active at any moment. Siemens provided sample programs. Have a look at samples provided for the Sinamics V20 drive. Use the search facility. As alternative, a wrapper library is provided by a 3rd party. I use this for my projects. You can find it here: https://github.com/rexhip/rexhip or Siemens Open Library. |
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