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S7-300 Automation System CPU Specifications: CPU 31xC and CPU 31x
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Beginning with 67(3 V5.1 + SP 4, the PG/PC can connect to S7 stations beyond
subnet boundaries, for example, to:
• Load user programs
• Load hardware configurations
• Perform tests and diagnostic functions
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The CPUs with DP interface provide four connection resources for routing PG
functions. These connection resources are available in addition to S7 connection
resources.
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If you use your CPU as an intelligent slave, the routing function can only be used
with an actively-configured DP interface.
In the properties of the DP interface in STEP 7, tick the Commissioning / Test
mode check box.
You will find further information in the 3URJUDPPLQJZLWK67(3PDQXDOor in the
STEP 7 Online Help.
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