4.2.2 Interfaces
The CPU has an integrated power supply:
n The power supply has to be provided with DC 24V. For this serves
the double DC 24V slot, that is underneath the flap.
n Via the power supply not only the internal electronic is provided
with voltage, but by means of the backplane bus also the con-
nected modules.
n The power supply is protected against polarity inversion and over-
current.
n The internal electronic is galvanically connected with the supply
voltage.
9pin SubD jack:
n The MPI interface serves for the connection between program-
ming unit and CPU.
n By means of this the project engineering and programming hap-
pens.
n MPI serves for communication between several CPUs or between
HMIs and CPU.
n Standard setting is MPI Address 2.
9pin SubD jack:
X1: Power supply
X2: MPI interface
X3: PtP interface
VIPA System 300SHardware description
Structure > Interfaces
HB140 | CPU-SC | 312-5BE13 | GB | 15-50 26
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