Addressing Digital Electronic Modules - Siemens Simatic ET200pro Operating Instruction

Configuring
4.2 Configuring the CPU
4.2.2.2

Addressing digital electronic modules

Introduction
The addressing of the digital electronic modules is described below. You need the addresses
of the channels of the digital electronic module in the user program.
Addresses of the digital electronic modules
The address of an input or output of a digital electronic module is composed of the byte
address and the bit address. The channels of the digital electronic modules are assigned bit
addresses.
Example: I 1.2
The example consists of:
I
1
2
When you insert a digital electronic module into a free slot, STEP 7 assigns a default
address. You can change the proposed default address in STEP 7.
38
Input -
Byte address The byte address depends on the module start address
Bit address You read the bit address from the module
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 09/2016, A5E35873416-AA