Downloading and Debugging the Program
7-2
STEP 7 Getting Started
A5E00171228-01
Configuring the Hardware
To assemble a module on the rail, proceed in the order given below:
• Attach the module onto the bus connector
• Hang the module on the rail and swing it downwards
• Screw the module in place
• Assemble the remaining modules
• Insert the key in the CPU once you have finished assembling all the modules.
You can still carry out the test even if you are using different hardware to that shown in the
diagram. You simply have to keep to the addressing of the inputs and outputs.
STEP 7 offers you various ways of debugging your program; for example, using the
program status or by means of the variable table.
You can find more information on configuring the
central rack in the manuals "S7-300, Hardware and
Installation / Module Specifications" and "S7-400 /
M7-400 – Hardware."
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