STL to LAD conversion tool

Hello,

Can someone help me in converting STL program to LAD program?

I have a program with Function Blocks written in STL which will support S7-300 & S7-400 series PLC's.

But same program blocks are not supported in S7-1200 series PLC's because 1200 PLC is not supporting STL language program blocks using TIA Portal V11.

Is there any conversion tool available in Siemens for easy conversion?

Thanks in advance.

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Split from How can we convert STL to LAD in simatic manager.

Hello,

I have not heard of automatic conversion of STL from S7-300/400 to equivalent LAD/FBD or SCL in S7-1200 platform.I think this is the reason of different controller structure and behavior.There are some occasions in S7-400 that the STL codes can not be used 1:1 for S7-300 like the caserelated to 2 extra accumulators and possible samples.

I suggets you, converting as much as binary logics as possible and for more complex cases, you can share your problem here for more helps.For a plant or more complex machines, I suggest you ask an experienced programmer(s) for help.

I hope this helps,

Hamid Hosseini 

Hello Hamid Hosseini,

First I would like to thank you very much for your answer.

Yes I agree with you that there is no conversion tool (S7-300/400 to S7-1200) in Siemens.

So now I am trying myself to convert STL to LAD Logic.

I am having SIMATIC MANAGER V5.5 and program backup which has one FB & 2 FC's.

Most of the STL networks are converted to LAD using direct conversion option in SIMATIC MANAGER except two of them in FB.

Please help me in converting these two networks to LAD. Here I am copying the STL logic.

 #Network 1: (Set Initial values Logic)

      L     #ADR_IN
      T     #INPUT_ADDRESS
      T     #IN_ADDRESS_DW

      L     #ADR_OUT
      T     #OUTPUT_ADDRESS
      T     #OUT_ADDRESS_DW

      SET  
      =     #Output.ACT.CW.REMONTE_CMD
      R     #DONE_ON
      R     #DONE

      O(   
      L     #ADR_IN
      L     0
      ==I  
      )    
      O(   
      L     #ADR_OUT
      L     0
      ==I  
      )    
      =     #ParameterErr

      U     #Input.ACT.SW.ALARM
      =     #FAULT

      U     #EXT_CTRL
      =     #Output.ACT.CW.EXT_CTRL_LOC

      L     0
      T     #PARA_INTERNAL_DPV0.PARA_ERR_NRO

      L     #PPO_TYPE
      T     #PARA_INTERNAL_DPV0.PPO_TYPE

      L     #ADAPTER_TYPE
      T     #PARA_INTERNAL_DPV0.ADAPTER_TYPE

      L     #DRIVE_TYPE
      T     #PARA_INTERNAL_DPV0.DRIVE_TYPE

      SET  
      S     #ALLWAYS_ON
      R     #ALLWAYS_OFF

      U     #DPV_MODE
      =     #PARA_INTERNAL_DPV0.PDV_MODE

#Network 2:

      U     #DPV_MODE
      U(   
      O     #PARA_INTERNAL_DPV0.Read_request
      O     #PARA_INTERNAL_DPV0.Write_Request
      )    
      FP    #PARA_INTERNAL_DPV0.Para_24
      SPBNB _075
      L     #PARA_INTERNAL_DPV1.Request.Reference
      L     1
      +I   
      T     #PARA_INTERNAL_DPV1.Request.Reference
_075: NOP   0

Thanks & Regards,

Saidulu

Hello,

Can someone help me in converting above logic to LAD?

This is very much important for me. Please help.

Thanks in Advance.

Saidulu

 #Network 1: (Set Initial values Logic)

      L     #ADR_IN
      T     #INPUT_ADDRESS
      T     #IN_ADDRESS_DW

***************************************************

      L     #ADR_OUT
      T     #OUTPUT_ADDRESS
      T     #OUT_ADDRESS_DW

***************************************************

      SET  
      =     #Output.ACT.CW.REMONTE_CMD
      R     #DONE_ON
      R     #DONE

***************************************************

      O(   
      L     #ADR_IN
      L     0
      ==I  
      )    
      O(   
      L     #ADR_OUT
      L     0
      ==I  
      )    
      =     #ParameterErr

***************************************************

      U     #Input.ACT.SW.ALARM
      =     #FAULT

***************************************************

      U     #EXT_CTRL
      =     #Output.ACT.CW.EXT_CTRL_LOC

***************************************************

      L     0
      T     #PARA_INTERNAL_DPV0.PARA_ERR_NRO

***************************************************

      L     #PPO_TYPE
      T     #PARA_INTERNAL_DPV0.PPO_TYPE

***************************************************

      L     #ADAPTER_TYPE
      T     #PARA_INTERNAL_DPV0.ADAPTER_TYPE

***************************************************

      L     #DRIVE_TYPE
      T     #PARA_INTERNAL_DPV0.DRIVE_TYPE

***************************************************

      SET  
      S     #ALLWAYS_ON
      R     #ALLWAYS_OFF

***************************************************

      U     #DPV_MODE
      =     #PARA_INTERNAL_DPV0.PDV_MODE

***************************************************

#Network 2:

      U     #DPV_MODE
      U(   
      O     #PARA_INTERNAL_DPV0.Read_request
      O     #PARA_INTERNAL_DPV0.Write_Request
      )    
      FP    #PARA_INTERNAL_DPV0.Para_24
      SPBNB _075 <<<<<<<<<<<<<<<<<<<<<<<<<<< ??
      L     #PARA_INTERNAL_DPV1.Request.Reference
      L     1
      +I   
      T     #PARA_INTERNAL_DPV1.Request.Reference
_075: NOP   0

Look at Network1 above.
Divide the network into smaller pieces into more networks and let the software convert it for you. I have helped you by marking the new network borders with "*******".

As for Network2... the "SPBNB" jump function I do not recognise. See if you can find out what it is for.

w

Late note: See [LINK]

Sai442

Hello,

Can someone help me in converting above logic to LAD?

This is very much important for me. Please help.

Thanks in Advance.

 

 Hello,

I have written some notes for your case.It can be done automatically if you share the actual program to work on.But for now, I share the following comments:

1. load transfer is equivalent to MOVE in your target controller
   
   
2. Set is an always true signal and it is equivalent to parallel combination of NO and NC contact of the same binary address.
   
   
3. OR of 2 comparison is easy to implement
   
   
4. Assignment(=) is like contacts combinations and coil
   
   
5. SPBNB  is JNB in English version(Jump if RLO = 0 to jump label . Copy RLO bit contents into the BR bit.).I am not sure this applicable totally in S7-1200.You can only try jump if result is false.
   

Based on comment, your function can be an error evaluation block for an specific hardware.I am not sure if it works 100% in your new hardware.

I hope these comments help,

Hamid Hosseini

William_B

Look at Network1 above.
Divide the network into smaller pieces into more networks and let the software convert it for you. I have helped you by marking the new network borders with "*******".

As for Network2... the "SPBNB" jump function I do not recognise. See if you can find out what it is for.

w

Late note: See [LINK]

Hello William_B,

Thank you very much for your inputs. I would be able to convert 1st network to LAD. But 2nd network I could not. Incase if you have any other idea please share with me.

Thanks & Regards,

Saidulu

hdhosseini

 

 Hello,

I have written some notes for your case.It can be done automatically if you share the actual program to work on.But for now, I share the following comments:

1. load transfer is equivalent to MOVE in your target controller
   
   
2. Set is an always true signal and it is equivalent to parallel combination of NO and NC contact of the same binary address.
   
   
3. OR of 2 comparison is easy to implement
   
   
4. Assignment(=) is like contacts combinations and coil
   
   
5. SPBNB  is JNB in English version(Jump if RLO = 0 to jump label . Copy RLO bit contents into the BR bit.).I am not sure this applicable totally in S7-1200.You can only try jump if result is false.
   

Based on comment, your function can be an error evaluation block for an specific hardware.I am not sure if it works 100% in your new hardware.

I hope these comments help,

Hamid Hosseini

Hello Hamid Hosseini,

Your explanation is very useful for me and I am able to convert 1st network to LAD. Where as 2nd network I could not. There are few more networks are available to convert but I am facing problems due to lack of knowledge on STL.

Here I am attaching Archived program backup, please help me. It has FB200, FC200, FC201 written in STL.

In FB 200, except 2 networks others are converted to LAD using direct conversion option in Simatic Manager. In FC200 & FC201 most of the networks are not converting to LAD.

This backup is created in SIMATIC MANAGER V5.5 SP3.

It is very important for me. So need your help.

Thanks & Regards,

Saidulu 

Hello,

I have an instruction "DIW102" in Step-7 with 300 series PLC programming in one of my FB which is used to access instance data word from instance DB. If I use same notation "DIW102" in TIA portal V11 with 1200 series PLC it is not accepting. It is giving error as "incomplete addressing".

Can anyone help me on how can I use "DIWx" in 1200 series PLC?

Thanks & Regards,

Saidulu