Configuring Hardware and Communication Connections STEP 7.pdf

Synchronous Operation of Multiple CPUs (Multicomputing)
8.2.1 Configuring Modules for Multicomputing Operation
To configure the programmable controller in multicomputing mode, proceed as
follows:
1. Use the drag & drop function to copy the CPUs you want to work in
multicomputing operation from the "Hardware Catalog" window to the
appropriate rows of the rack.
2. Double-click on a CPU and set the CPU number in the "Multicomputing" tab
(when you insert the CPU, the CPU numbers are assigned automatically in
ascending order).
3. For all modules to be assigned to CPU1, proceed as follows:
- Arrange the modules at the intended position in the rack.
- Double-click on the module and select the "Addresses" tab.
- In the "CPU No." box select CPU 1.
Note: The CPU assignment is displayed for modules that can trigger
interrupts in the "Inputs" or "Outputs" tab as the "Target CPU for interrupt."
4. Repeat the steps listed under 3 for the modules that are to be assigned to the
remaining CPUs.
8.2.2 Displaying the CPU Assignment
You have a choice of two methods of highlighting the modules that are assigned to
a specific CPU:
• Select the menu command View > Filter > CPU No. x - Modules (x = CPU
number).
All module names in the configuration table that are not assigned to this CPU
are grayed out (exception: distributed I/O modules, interface modules, and
power supplies).
• Select the relevant CPU and select the pop-up menu command Filter
Assigned Modules.
Note
The filter you set has no effect on the print function or the "Address Overview"
dialog box.
You can modify the CPU assignment via the "Addresses" tab (exception: interface
modules and power supplies).
Configuring Hardware and Communication Connections with STEP 7
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