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Post by ph0010421 on Codesys running in Docker on Linux OS ^{CODESYS Forge talk (Post)}
Hello I need to make the Linux serial ports (ttymcx0, 1, 2 and 3) available to Codesys (Com1, 2...) Is there a guide? Is it something I do when I deploy the Codesys SL? thanks
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Codesys running in Docker on Linux OS ^{CODESYS Forge talk (Thread)}
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Post by george32 on Learning ST in an object-oriented way. ^{CODESYS Forge talk (Post)}
Dear all, I am currently creating a program in the ST language. Because the program is starting to grow nicely I would like to switch to a more object-oriented way of programming. (Like for example in Python). By surfing the internet I found out that Function Blocks is the best method for this. Now I would like to delve further into this, with all the possibilities that Function Blocks have only I cannot find a clear course, explanation of what everything is around the function block thing and how to approach everything. I find the standard documentation around Function Blocks rather abstract and the examples are minimal. Therefore I am looking for a page/course/document explaining object oriented programming in Codesys (or other PLC programming environment). Do you have any recommendations on this?
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Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Thread)}
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Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
Hi, I want to use two OneWireMaster on a Raspberry Pi5. I'm running Codesys Control for Raspberry Pi 64SL V 4.15.0.0. Under Linux I've configured two GPIOs for 1w bus usage on GPIO4 and GPIO27. Under Linux both masters seem to work fine and I can readout both sensors connected to both GPIOs. The two masters are 'w1_bus_master1' and 'w1_bus_master2'. In Codesys I've configured to OneWireMasters with the corresponding file paths. But in Codesys the 2nd onewiremaster "w1_bus_master2" doesn't work. Status is showing "OnewireMaster : Not running" What am I doing wrong? Does Codesys on Raspberry support multiple OneWireMasters? Any help is appreciated.
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Post by s1mon on Two OneWireMaster on one Raspberry PI 5 ^{CODESYS Forge talk (Post)}
Hi, I want to use two OneWireMaster on a Raspberry Pi5. I'm running Codesys Control for Raspberry Pi 64SL V 4.15.0.0. Under Linux I've configured two GPIOs for 1w bus usage on GPIO4 and GPIO27. Under Linux both masters seem to work fine and I can readout both sensors connected to both GPIOs. The two masters are 'w1_bus_master1' and 'w1_bus_master2'. In Codesys I've configured to OneWireMasters with the corresponding file paths. But in Codesys the 2nd onewiremaster "w1_bus_master2" doesn't work. Status is showing "OnewireMaster : Not running" What am I doing wrong? Does Codesys on Raspberry support multiple OneWireMasters? Any help is appreciated.
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Post by helcioburd on #11 Flexible way for text formatting - Another use of ANY type ^{IEC Snippets snippets (Post)}
Thank You! Excellent tool as is!
Last updated: 2025-06-10

Ticket #11: Flexible way for text formatting - Another use of ANY type ^{IEC Snippets snippets (Ticket)}
... This is just one way to do, please let me know, if you have other idea ... It is quite a common demand - especially when developing low level function blocks, drivers - to easily and safely generate meaningful log messages. However, using the standard libraries, CONCAT, TO_STRING, the amount of code used for logging might easily exceed the actual code. It just looks silly, especially for people coming from the C, C++ or C# world... They want to do something like this: PLCLog.DEBUG('Got param ID:%d; Type:%s Flags:%04X; Len:%d; ', dwID, strTypeClass, dwFlags, dwDataLen); The goal here is the small footprint, flexibility and not really the performance. The problem is however, that the printf like calls available in CODESYS libraries are only handling one placeholder (I can't see a way to map **args, or va_list to IEC code...), and start to behave crazy if there are more placeholders than arguments. So, here comes a workaround: // Just a tricky wrapper call, to allow sprintf like functionality with multiple placeholders and // arguments of ANY type. I Mostly use it for debug log generation - it was not intended // for fast performance or 100% compliance. Not a very nice implementation, and in my experiance // can cause access violation ... // // The purpose is to implement building string with a very small foorptint in the code. // For example: // // PLCLog.DEBUG( PE6( // 'Param ID:%d; Type:%s Flags:%04X; pData:%016X; Len:%d; DrvSpec:%016X', // dwID, strTypeClass, dwFlags, pData, dwDataLen, dwDriverSpec // )); // // As illustrated - due to the limitations of ANY inputs (can't be optional), // a set of helper functions is provided PE1..PE9 for the given numver of parameters. // // Limitations: // - It's based on CODESYS String Utilities... (STU)... I_Strings ? Ergh... // ... Could use IECStringutils.Printf - see in the code // - String length 255 // - Placeholders are from standard implementation (not same as in visualization) // - Due to ANY parameters, only parameters with Read/write access can be used... // means : no properties (??? Should be), function call results, or any // ad-hoc calculated values. // // Just take it easy, let me know if you have a better way for this feature FUNCTION _SPrintf_Segments : STRING(255); VAR_INPUT strFormat : STRING(255); END_VAR VAR_IN_OUT aArgs : ARRAY[*] OF __SYSTEM.AnyType; END_VAR VAR_OUTPUT lBound : DINT := LOWER_BOUND(aArgs, 1); uBound : DINT := UPPER_BOUND(aArgs, 1); END_VAR VAR iLenFormat : INT := 0; iSegmentCnt : INT := 0; iSegmentStart : INT := 1; strSegment : STRING(255); iPos : INT := 0; iRes : INT; END_VAR VAR_STAT CONSTANT byPc : BYTE := 37; // '%' END_VAR _SPrintf_Segments := UTF8#''; iPos := 0; iLenFormat := STU.LEN(strFormat); iSegmentStart := 1; iSegmentCnt := 0; lBound := LOWER_BOUND(aArgs, 1); uBound := UPPER_BOUND(aArgs, 1); FOR iPos := 0 TO iLenFormat DO IF strFormat[iPos] = byPC OR iPos >= iLenFormat THEN // Hit %, or end of format string IF strFormat[iPos+1] <> byPC THEN // skip %% IF iSegmentCnt > 0 THEN // The first segment extends to the 2nd % char.... strSegment := STU.MID(strFormat, iPos + 1 - iSegmentStart, iSegmentStart); iSegmentStart := iPos + 1; IF iSegmentCnt > UPPER_BOUND(aArgs, 1) THEN EXIT; END_IF iRes := STU.StuSprintf( pstFormat := ADR(strSegment), pVarAdr := aArgs[iSegmentCnt].pValue, udiVarType := aArgs[iSegmentCnt].TypeClass, pBuffer := ADR(_SPrintf_Segments) + TO_UDINT(LEN(_SPrintf_Segments)), dwBufferSize := SIZEOF(_SPrintf_Segments) - TO_UDINT(LEN(_SPrintf_Segments)) ); END_IF iSegmentCnt := iSegmentCnt + 1; ELSE iPos := iPos +1; END_IF END_IF END_FOR IF iPos < iLenFormat THEN // If more placeholders than arguments, just add the remaining of the format string.... _SPrintf_Segments := STU.CONCAT(_SPrintf_Segments, STU.MID(strFormat,iLenFormat,iPos+1)); END_IF Well, this is not too bad... so far, but it still requires an array as a parameter, what can bot be done in a compact way within the code (?). So here comes a helper function: UNCTION PE4 : STRING(255); VAR_INPUT strFormat : STRING(255); // Format string Value1 : ANY; // Value for 1st placeholder Value2 : ANY; // Value for 2nd placeholder Value3 : ANY; // Value for 3rd placeholder Value4 : ANY; // Value for 4th placeholder END_VAR VAR aArgs : ARRAY[1..4] OF __SYSTEM.AnyType := [ Value1, Value2, Value3, Value4 ]; END_VAR PE4 := _Sprintf_Segments(strFormat, aArgs); Yes... Unfortunately, it is not possible to make input variables of ANY type optional... So unfortunately, there is a different helper function for 2, 3, 4 ... 9 parameters. :( Have a better idea? This way, the final call looks like: PLCLog.DEBUG( PE4('Got param ID:%d; Type:%s Flags:%04X; Len:%d;', dwID, strTypeClass, dwFlags, dwDataLen) ); 2025-06-10 21:17:41.026000 Ticket #11: Flexible way for text formatting - Another use of ANY type IEC Snippets iec-snippets tickets snippets False /tol/iec-snippets/snippets/11/ Ticket Sprintf / Vsprintf ANY Variable number of arguments Flexible way for text formatting - Another use of ANY type False 1 2024-11-16 06:11:47.422000 11 Flexible way for text formatting - Another use of ANY type Unlicensed ... This is just one way to do, please let me know, if you have other idea ... It is quite a common demand - especially when developing low level function blocks, drivers - to easily and safely generate meaningful log messages. However, using the standard libraries, CONCAT, TO_STRING, the amount of code used for logging might easily exceed the actual code. It just looks silly, especially for people coming from the C, C++ or C# world... They want to do something like this: PLCLog.DEBUG('Got param ID:%d; Type:%s Flags:%04X; Len:%d; ', dwID, strTypeClass, dwFlags, dwDataLen); The goal here is the small footprint, flexibility and not really the performance. The problem is however, that the printf like calls available in CODESYS libraries are only handling one placeholder (I can't see a way to map **args, or va_list to IEC code...), and start to behave crazy if there are more placeholders than arguments. So, here comes a workaround: // Just a tricky wrapper call, to allow sprintf like functionality with multiple placeholders and // arguments of ANY type. I Mostly use it for debug log generation - it was not intended // for fast performance or 100% compliance. Not a very nice implementation, and in my experiance // can cause access violation ... // // The purpose is to implement building string with a very small foorptint in the code. // For example: // // PLCLog.DEBUG( PE6( // 'Param ID:%d; Type:%s Flags:%04X; pData:%016X; Len:%d; DrvSpec:%016X', // dwID, strTypeClass, dwFlags, pData, dwDataLen, dwDriverSpec // )); // // As illustrated - due to the limitations of ANY inputs (can't be optional), // a set of helper functions is provided PE1..PE9 for the given numver of parameters. // // Limitations: // - It's based on CODESYS String Utilities... (STU)... I_Strings ? Ergh... // ... Could use IECStringutils.Printf - see in the code // - String length 255 // - Placeholders are from standard implementation (not same as in visualization) // - Due to ANY parameters, only parameters with Read/write access can be used... // means : no properties (??? Should be), function call results, or any // ad-hoc calculated values. // // Just take it easy, let me know if you have a better way for this feature FUNCTION _SPrintf_Segments : STRING(255); VAR_INPUT strFormat : STRING(255); END_VAR VAR_IN_OUT aArgs : ARRAY[*] OF __SYSTEM.AnyType; END_VAR VAR_OUTPUT lBound : DINT := LOWER_BOUND(aArgs, 1); uBound : DINT := UPPER_BOUND(aArgs, 1); END_VAR VAR iLenFormat : INT := 0; iSegmentCnt : INT := 0; iSegmentStart : INT := 1; strSegment : STRING(255); iPos : INT := 0; iRes : INT; END_VAR VAR_STAT CONSTANT byPc : BYTE := 37; // '%' END_VAR _SPrintf_Segments := UTF8#''; iPos := 0; iLenFormat := STU.LEN(strFormat); iSegmentStart := 1; iSegmentCnt := 0; lBound := LOWER_BOUND(aArgs, 1); uBound := UPPER_BOUND(aArgs, 1); FOR iPos := 0 TO iLenFormat DO IF strFormat[iPos] = byPC OR iPos >= iLenFormat THEN // Hit %, or end of format string IF strFormat[iPos+1] <> byPC THEN // skip %% IF iSegmentCnt > 0 THEN // The first segment extends to the 2nd % char.... strSegment := STU.MID(strFormat, iPos + 1 - iSegmentStart, iSegmentStart); iSegmentStart := iPos + 1; IF iSegmentCnt > UPPER_BOUND(aArgs, 1) THEN EXIT; END_IF iRes := STU.StuSprintf( pstFormat := ADR(strSegment), pVarAdr := aArgs[iSegmentCnt].pValue, udiVarType := aArgs[iSegmentCnt].TypeClass, pBuffer := ADR(_SPrintf_Segments) + TO_UDINT(LEN(_SPrintf_Segments)), dwBufferSize := SIZEOF(_SPrintf_Segments) - TO_UDINT(LEN(_SPrintf_Segments)) ); END_IF iSegmentCnt := iSegmentCnt + 1; ELSE iPos := iPos +1; END_IF END_IF END_FOR IF iPos < iLenFormat THEN // If more placeholders than arguments, just add the remaining of the format string.... _SPrintf_Segments := STU.CONCAT(_SPrintf_Segments, STU.MID(strFormat,iLenFormat,iPos+1)); END_IF Well, this is not too bad... so far, but it still requires an array as a parameter, what can bot be done in a compact way within the code (?). So here comes a helper function: UNCTION PE4 : STRING(255); VAR_INPUT strFormat : STRING(255); // Format string Value1 : ANY; // Value for 1st placeholder Value2 : ANY; // Value for 2nd placeholder Value3 : ANY; // Value for 3rd placeholder Value4 : ANY; // Value for 4th placeholder END_VAR VAR aArgs : ARRAY[1..4] OF __SYSTEM.AnyType := [ Value1, Value2, Value3, Value4 ]; END_VAR PE4 := _Sprintf_Segments(strFormat, aArgs); Yes... Unfortunately, it is not possible to make input variables of ANY type optional... So unfortunately, there is a different helper function for 2, 3, 4 ... 9 parameters. :( Have a better idea? This way, the final call looks like: PLCLog.DEBUG( PE4('Got param ID:%d; Type:%s Flags:%04X; Len:%d;', dwID, strTypeClass, dwFlags, dwDataLen) ); False False 0 0 0 None struccc None
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Serial communication CAA SerialCom com.open function happening ^{CODESYS Forge talk (Thread)}
Serial communication CAA SerialCom com.open function happening
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Post by matthewkim on Serial communication CAA SerialCom com.open function happening ^{CODESYS Forge talk (Post)}
I think that codes are same but working different. one is comopen is done but the other is not done. I don't know reason why.
Last updated: 2025-06-11

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