315-4PN33

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.
8pin RJ45 jack:
n The RJ45 jack serves the interface to the Ethernet PG/OP
channel.
n This interface allows you to program res. remote control your
CPU, to access the internal web site or to connect a visualization.
n Configurable connections are not possible.
n For online access to the CPU via Ethernet PG/OP channel valid
IP address parameters have to be assigned to this.
With this CPU the integrated RS485 interface is fix set to PtP (point-
to-point) communication.
n PtP functionality
–
Using the PtP functionality the RS485 interface is allowed to
connect via serial point-to-point connection to different source
res. target systems.
– For operation there is no further configuration in the hardware
configurator required.
– Here the following protocols are supported: ASCII, STX/ETX,
3964R, USS and Modbus-Master (ASCII, RTU).
8pin RJ45 jack:
n PROFINET IO controller to connect PROFINET IO devices
n Ethernet PG/OP channel
n Ethernet Siemens S7 connection
n Ethernet open communication
4.2.3 Memory management
The CPU has an integrated memory. Information about the capacity
of the memory may be found at the front of the CPU. The memory is
divided into the following parts:
n Load memory 512kbyte
n Code memory (50% of the work memory)
n Data memory (50% of the work memory)
n Work memory 512kbyte
MPI interface X2
Ethernet PG/OP channel
X5
PtP interface X3
PROFINET IO controller
X8
Memory
VIPA System 300S Hardware description
Structure > Memory management
HB140 | CPU | 315-4PN33 | GB | 14-43 27