Routing - Siemens SIMATIC S7-400 Manual

4.2.7

Routing

Properties
You can access other stations on other subnets with the programming device / PC of your
S7 stations. You can use this for the following actions:
● Downloading user programs
● Downloading a hardware configuration
● Performing testing and diagnostics functions
Requirements
● The station modules are "capable of routing" (CPUs or CPs).
● The network configuration does not exceed project limits.
● The modules have loaded the configuration data containing the latest "knowledge" of the
● In your network configuration, the PG/PC you want to use to establish a connection via
● The CPU must set to master mode, or
● when set to operate in slave mode, the Test, Commissioning, Routing functionality must
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
Note
If you use your CPU as I-slave, the routing function is only possible when the
DP interface is switched to active In STEP 7, set the Test, Commission Routing check
box in the properties dialog of the DP interface. For detailed information, refer to the
Programming with STEP 7
entire network configuration of the project.
Reason: All modules participating in the network transition must receive the routing
information defining the paths to other subnets.
network node must be assigned to the network it is physically connected to.
be enabled by setting the check box in STEP 7, in the
DP interface for DP slave properties dialog box.
manual, or directly to the
Communication
4.2 Communication services
STEP 7 Online Help
4-13