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Access to DBs area in S7-1200/S7-1500

PreviousAddressingNextIEC 60870-5-104 Connectivity

Last updated 2 years ago

To access a DB in S7-1200/S7-1500 some additional setting PLC-side are needed:

  • Only global DBs can be accessed

  • The optimized block access must be turned off

  • The access level must be “full” and the “connection mechanism” must allow GET/PUT

The setup of access to DBs in TIA Portal V15 is described below.

Right click on the DB and select Properties... item.

Go to Attributes and uncheck Optimize block access.

Right click on the CPU and select menu item Properties…

Select Protection & Security and select Full access (no protection) as shown below.

Go to Connection mechanisms and check Permit access with PUT/GET communication from remote partner.

For changes to take effect, download hardware and program to the PLC.

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