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About Jesse
since
10-22-2020
yesterday
Jesse
Established Member
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Solutions
Thank you Sgilk. however, I don't see this data type in the PLC library "types/smartfunctionkit/backend/variables/cmd/store-variable-double-parameters". I did try using uint32 and didn't work. The main issue is using a PLC function block to assign a value to the following fields under the node of save-variable-double.
"index": 0,
"name": "",
"value": 0,
"persistent": false
.
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@Sgilk,
the same variable can be read and written. since the variables in the SFK-4H program I created are only changed through the data layer by the PLC in the core. the same variable is for an error status and is set in the SFK-4H program and PLC reads that. then like a handshaking signal, the PLC needs to reset the variable for PLC logic. the variable-25 in the state is used in the read node function and if I assign 25 into the "index" of the save-variable of cmd and assign a value to it. when clicking on the write button from the data layer the variable in the SFK-4H changes. however, when I used the DL_WriteNode it didn't work. I need to know how I can use DL_WriteNode to write a value to this variable same as in the data layer.
Thanks,
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I am working on a SFK-4H demo and trying to use the core came with SFK-4H. to communicate with SFK-4H I need to read and write variables between core PLC and SFK. for the same variable I can read the value using DL_ReadNode even there are some other items under the same variable
however for the same variable when I write a value to it the DL_WriteNode deosn't work. I have tried to use string to include all items into the value of DL_WriteNode and it showed function block error. I alse tried to add one item into the NodeName and write a value to it, and it didn't work either. can someone help me on that and show me how to write a value into a json format?
Thanks,
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07-31-2024
07:58 PM
Hello Everyone,
I have created a PLC project using the core came with a SFK handling. it was working until one hour ago. I wasn't able to download the project to the core anymore. here is the messages in detail. I did clean all then download. the compiling was ok. what is CmpDevide related to? how can I fix it without reimaging the core?
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sorry for the late response. we got some help from the development group and found out the reason why it didn't work. it was an encoder port assignment issue since the motor is MSK. you can close this topic now. Thanks,
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OK