Communication
14.1 Communication services
S7-400H
System Manual, 03/2012, A5E00267695-11
217
14.1.5 S7 routing
Properties
You can access your S7 stations beyond subnet boundaries using the programming device /
PC. You can use them for the following actions:
● Downloading user programs
● Downloading a hardware configurations
● Performing tests and diagnostics functions
Note
On a CPU used as intelligent slave the S7 routing function is only available if the DP
interface is activated. In STEP 7, check the Test, Commissioning, Routing check box in
the properties dialog of the DP interface. For more information, refer to the
Programming
with STEP 7
manual, or directly to the
STEP 7 Online Help
Requirements
● The network configuration does not exceed project limits.
● The modules have loaded the configuration data containing the latest "knowledge" of the
entire network configuration of the project.
Reason: All modules connected to the network gateway must receive routing information
which defines the paths to other subnets.
● In your network configuration, the PG/PC you want to use to set up a connection via
gateway must be assigned to the network to which it is physically connected.
● The CPU must set to master mode, or
● if the CPU is configured as a slave, the "Programming, status/modify or other PG
functions" check box
must be activated in the properties of the DP interface for the DP slave in STEP 7.
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