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Scheduled, versioned backup and archiving of PLC/HMI programs
Collect, compare and archive the PLC/HMI programs in the agreed scope on a schedule, and detect unapproved changes.
Scope
- Inventory of devices and program versions
- Upload, comparison with the previously archived copy, and recording of differences
- Versioned archive with the differences recorded each cycle
- Undocumented changes reported to the plant
Not included
- Fixing issues found (quoted separately)
What the plant prepares
- Device list and access rights
| Duration | Confirmed after a survey — TDL states the scope and number of days before work starts |
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| Price | Quoted per scope after the survey |
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When a PLC fails or a program is changed without documentation, the most recent backup decides how the system is restored. Scheduled, versioned backup works in cycles: upload the PLC/HMI programs, compare them with the previously archived copy, record the differences and report to the plant when a change has no documentation. For plants with many PLCs, consider FactoryTalk AssetCentre so that comparison and versioning run automatically on a schedule. How to set up AssetCentre and which network ports need to be opened: see FactoryTalk AssetCentre: automatic PLC/HMI program backup.
Related projects: P&G Vietnam Dong An plant – FactoryTalk AssetCentre for LFE Making and the packing lines · URC Vietnam – yearly maintenance, including PLC, HMI and SCADA backups.
Related services:
PLC backup and version control
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