
1 Properties / Services
B−7
CP 343-1 Advancedfor Industrial Ethernet / Manual Part B
Release 06/2008
C79000-G8976-C202-04
S PROFINET IO − IRT communication (Isochronous Real Time)
IRT communication is possible in PROFINET IO. IRT communication is
possible only when the CP is used as a PROFINET IO controller or as a
PROFINET IO device but not for both modes at the same time.
S PROFINET CBA
Use of a SIMATIC S7-300 for Component based Automation on the basis of the
PROFINET standard of the PNO. This standard allows:
− Component technology in automation;
− Communication between intelligent devices is configured graphically instead
of requiring laborious programming
− Vendor-independent, plant-wide engineering.
Component based Automation allows access to the variables of PROFINET
components from all standard PC applications with the OPC client interface, for
example, visualization systems. Over the OPC server, objects can be selected
directly from a variable selection list of the selected PROFINET component.
S S7 communication and PG/OP communication with the following functions:
− PG functions (including routing)
− Operator control and monitoring functions (HMI)
Multiplexing TD/OP connections
− Client and server for data exchange using communication blocks
1)
S7
connections configured at both ends
− Server for data exchange on S7 connections configured at one end only
without communication blocks on the S7-300 / C7-300 station
S S5-compatible communication with the following functions:
− SEND/RECEIVE interface over ISO transport connections, ISO-on-TCP,
TCP and UDP connections
UDP frame buffering on the CP can be disabled during configuration. When
necessary, this allows you to achieve a shorter reaction time between the
arrival of a UDP frame and its evaluation on the CPU.
− Multicast over UDP connection
The multicast mode is made possible by selecting a suitable IP address
when configuring connections.
− FETCH/WRITE services (server; corresponding to S5 protocol) via ISO
transport connections, ISO-on-TCP connections and TCP connections;
1)
Blocks for S7 communication (see also STEP 7 online help or manual
“System Software for S7-300/400 System and Standard Functions”):
BSEND FB12
BRCV FB13
PUT FB14
GET FB15
USEND FB8
URCV FB9
C_CNTRL FC62
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