Planning Plant Migration; General Procedure - Siemens SIMATIC S7-300 Manual For Migrating

2 Planning Plant Migration

2 Planning Plant Migration
2.1

General procedure

In the run-up to plant migration, there is considerable need for clarification.
Therefore, it is all the more important to develop a detailed comprehensive
concept for planning and implementing the pending migration.
Each plant has different requirements for the migration process. Depending on
the complexity of the plant control system, acceptable machine downtimes and
production flexibility, the required preparation, procedure and depth of migration
may differ accordingly.
It is always necessary to think through and plan migration of the entire plant, even
if only a partial migration is considered. The question is not "How do I migrate a
controller?" but "What should the plant look like at the end of migration and which
migration steps are necessary?".
Considerations and issues to be dealt with before migration:
Which plant parts should be migrated?
–
Even a partial migration requires that the entire plant to be considered.
Which components are affected?
–
Stand-alone solutions or complex plant configuration
–
Communication with third-party systems
–
Existing special hardware and software components
Which considerations are important for planning the migration time?
–
Schedule non-production times
–
24/7 production
–
Produce in advance to buffer downtimes
–
Temporarily shift production
Fall-back strategies
–
Allow quick migration back to previous hardware/software platform
–
Sufficient time buffers
–
Comprehensive tests up to the "point of no return"
–
New communication cabling even despite potential continued use of
existing communication connections
Minimizing risk
–
Accurately capture the actual plant
–
Detailed planning of each individual trade
–
Identify and consider dependencies
–
Gradual migration
–
Separate migration of centralized/distributed
–
Retain the cabling
–
Partial acceptances
–
Preliminary tests in the laboratory
–
Test connections to communication networks
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1, 05/2017
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