I/O Addresses Of A Digital Module In Slot 4 - Siemens SIMATIC S7-300 Hardware And Installation Manual

Addressing
An example for digital modules
The example in the figure below shows which default addresses are obtained if a
digital module is inserted in slot 4 (that is, when the module start address is 0).
Slot number 3 has not been assigned since there is no interface module in the
example.
PS
Slot
number
Figure 8-3 I/O Addresses of a digital module in Slot 4
Addresses of the analog modules
The address of an analog input or output channel is always a word address.
The channel address depends on the module start address.
Insert the first analog module into slot 4 so that it has default start address 256.
The start address of every subsequent analog module will be incremented by 16
per slot (see diagram under Slot-based module addressing).
An analog I/O module has the same start addresses for its input and output
channels.
8-6
CPU
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
1
2
S7-300 Programmable Controller Hardware and Installation
SM (digital modules)
Address 0.0
Address 0.1
:
:
Address 0.7
:
:
Address 1.0
Address 1.1
:
:
Address 1.7
4
A5E00105492-02