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Phase 1 - Investigation - Migrating PLC

· 3 min read
Adrian Littlejohns
Adrian Littlejohns
Industrial Process Control and Automation Enthusiast

Today's Tasks​

  1. Raise PO for HMI and Firewall
  2. Remove Know-How protection from S7 Classic Blocks and re-migrate

Raise PO for HMI and Firewall​

info

Received acknowledgement from vendor, of order receipt for firewall

Unlock Know-How protected blocks​

Research SiePortal only found how to unlock when you knew the original password. Google search found this youtube video Unlock protected block in simatic manager using Microsoft Access

Warnings after S7-300 migration into TIA​

  • FB768: Block 'DB485' is unknown.,10/6/2025,8:03:45 PM,,
  • FC248: The block was created with "Load from device" or with STEP 7 V5.0 SP2 or earlier. This can result in unpredictable behavior.,10/6/2025,8:03:45 PM,,
  • FC458: Block 'DB81' is unknown.,10/6/2025,8:03:45 PM,,
  • FC459: Block 'DB61' is unknown.,10/6/2025,8:03:45 PM,,
  • FC460: Block 'DB7' is unknown.,10/6/2025,8:03:45 PM,,
  • CONT_C [FB41] 1.4: The library element is not supported in TIA Portal. It will be migrated as know-how protected user block "CONT_C_LF".,10/6/2025,8:03:48 PM,,
  • CPU 317-2 PN/DP\FC346: The corresponding SCL source is missing. The block is migrated with know-how protection.,10/6/2025,8:03:51 PM,,
  • CPU 317-2 PN/DP\FC248: The corresponding SCL source is missing. The block is migrated with know-how protection.,10/6/2025,8:03:54 PM,,
  • CPU 317-2 PN/DP\FC250: The corresponding SCL source is missing. The block is migrated with know-how protection.,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k1'" is not unique. Label renamed to "'k1_Mig'".,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k2'" is not unique. Label renamed to "'k2_Mig'".,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k3'" is not unique. Label renamed to "'k3_Mig'".,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k4'" is not unique. Label renamed to "'k4_Mig'".,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k5'" is not unique. Label renamed to "'k5_Mig'".,10/6/2025,8:04:06 PM,,
  • CPU 317-2 PN/DP\FC340:The label name "'k6'" is not unique. Label renamed to "'k6_Mig'".,10/6/2025,8:04:06 PM,,

Method incorporate previous migration interation progress into tia-v0.0.3​

  1. Opened tia-v0.0.2 as a reference project and copied FC851 and the new inst... datablock and pasted into tia-v0.0.3
  2. Compiled without error.
  3. Rebuild all software
  4. Right-click on s7-300 station and select "migrate to 1500"
  5. Selected the appropriate CPU, start migration after ack'ing info messaging regarding fully testing the migrated program.
  6. Archived tia-v0.0.3 and pre-released to gh
  7. Further 3 issues;

created to resolve errors in migration.