If you do not like to use a hardware configuration, an automatic
addressing comes into force. At the automatic address allocation
DIOs occupy depending on the slot location always 4byte and AIOs,
FMs, CPs always 16byte at the bus. Depending on the slot location
the start address from where on the according module is stored in the
address range is calculated with the following formulas:
n
DIOs: Start address = 4×(slot -1)
n
AIOs, FMs, CPs: Start address = 16×(slot -1)+256
The following sample shows the functionality of the automatic
address allocation:
5.4 Hardware configuration - CPU
The configuration of the CPU takes place at the Siemens
‘hardware
configurator’
. The hardware configurator is part of the Siemens
SIMATIC Manager. It serves for project engineering. The modules,
which may be configured here are listed in the hardware catalog. If
necessary you have to update the hardware catalog with
‘Options
è
Update Catalog’
.
Automatic addressing
Example for automatic
address allocation
Precondition
VIPA System 300S CPU
Deployment CPU 315-2AG13
Hardware configuration - CPU
HB140 | CPU | 315-2AG13 | GB | Rev. 14-40
40
