Configuring
7.1 Configuring the CPU
Automation system
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System Manual, 12/2017, A5E03461182-AE
7.1.2.2
Addressing digital modules
Introduction
The following section describes the addressing of the digital modules. In your user program,
you require the addresses of the channels of the digital module.
Digital module addresses
The address of a digital module's input or output is composed of the byte address and the bit
address. The channels of the digital module are assigned bit addresses.
Example: I 1.2
The example consists of:
I
Input
-
1
Byte address The byte address depends on the module start address
2
Bit address You read the bit address from the module
When you insert a digital module into a free slot, STEP 7 assigns a default address. You can
change the proposed default address in STEP 7.
Summary of Contents for Simatic S7-1500/ET 200MP
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