show the entry list
S7-300 CPU 31x -- Product information -- Background and system information
What is the emergency address (emergency IP) of a CPU and when is this enabled or disabled?
All-round protection with Industrial Security - System Integrity
What are the differences between OPEN MODBUS / TCP Redundant V1 and OPEN MODBUS / TCP Redundant V2?
What is the difference between "normal routing" and data record routing?
Which SIMATIC S7-300/S7-400 modules support the NTP time-of-day message and how do you activate this kind of time synchronization?
Which manufacturer ID, in other words OUI (Organizationally Unique Identifier), does SIEMENS AG use for the MAC addresses of network-compatible devices?
What should you watch out for when using the alarm numbering procedure?
Which IO controllers and IO devices support the following functions: IRT, prioritized startup, MRP, PROFIenergy, Shared device, I device and clock-synchronized mode?
What is the maximum number of parameters that can be assigned to an FC and FB in the S7-300 CPU?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
Which PROFINET nodes support automatic commissioning (device replacement without interchangeable medium) in the case of topological configuration and device replacement without topological configuration?
Which PROFINET nodes support the extended PN diagnostics and what do you have to configure?
Why is only a warm start available for S7-300?
Which SIMATIC S7 modules support the "Direct Data Exchange" function (internode communication)?
Which entries deal with consistent data in conjunction with distributed I/O?
What properties, advantages and special features does the S7 Basis Communication offer?
What properties, advantages and special features does the global data communication offer?
What is the connection between subnet masks and IP addresses with regard to subnetting and supernetting (Classless Inter Domain Routing CIDR)?
Which modules support the S7 routing function?
How can you obtain an overview of the memory concept of SIMATIC S7-300 CPUs and C7 devices?
Retentivity behavior of S7-300 CPU 31x and complete devices C7-6xx with MMC
Status of the run-time meter after overall reset
Why does the retentivity behavior of the S7-300 CPUs and C7 devices without MMC (Micro Memory Card) influence the contents of the variables?
Local data addressing with S7-300 / S7 400
S7 300 run-time meter doesn't give any value
S7-400 CPU 41x -- Product information -- Background and system information
All-round protection with Industrial Security - System Integrity
What are the differences between OPEN MODBUS / TCP Redundant V1 and OPEN MODBUS / TCP Redundant V2?
What is the difference between "normal routing" and data record routing?
Which SIMATIC S7-300/S7-400 modules support the NTP time-of-day message and how do you activate this kind of time synchronization?
Which manufacturer ID, in other words OUI (Organizationally Unique Identifier), does SIEMENS AG use for the MAC addresses of network-compatible devices?
What should you watch out for when adding components or changing their parameters using CiR (Configuration in Run)?
Which IO controllers and IO devices support the following functions: IRT, prioritized startup, MRP, PROFIenergy, Shared device, I device and clock-synchronized mode?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
Which PROFINET nodes support automatic commissioning (device replacement without interchangeable medium) in the case of topological configuration and device replacement without topological configuration?
Behavior of the CPU after power off without back-up battery
I/O addressing with DP slaves
Which PROFINET nodes support the extended PN diagnostics and what do you have to configure?
What is the difference between a restart (warm restart), cold restart and hot restart of a S7-400 CPU?
Which SIMATIC S7 modules support the "Direct Data Exchange" function (internode communication)?
What properties, advantages and special features does the S7 Basis Communication offer?
What properties, advantages and special features does the global data communication offer?
Which entries deal with consistent data in conjunction with distributed I/O?
What is the connection between subnet masks and IP addresses with regard to subnetting and supernetting (Classless Inter Domain Routing CIDR)?
Which modules support the S7 routing function?
CPU does not work in RUN
What does "Correction factor" mean in the "Diagnostics/Clock" tab of the CPU's Properties dialog?
What is multicomputing mode and what are the differences to operating in the segmented subrack?
Differing information on the requirement of offline/ online memory
How can I get an overview of the S7-400 memory concept?
Industrial Ethernet S7-300/400 CPs -- Product information -- System description (protocols)
How are the communication resources assigned in the S7-300?
How do you load the 3D, CAx and ePLAN data for the SIMATIC products?
What are the differences between OPEN MODBUS / TCP Redundant V1 and OPEN MODBUS / TCP Redundant V2?
What should you watch out for when you enable the "SNMP" function in the configuration of the security module?
Which security modules support the DNS function?
What should you watch out for when enabling and using the security functions of CP343-1 Advanced and CP443-1 Advanced?
What should you watch out for when upgrading from previous modules to the successor module CP443-1 or CP443-1 Advanced?
How do you verify the authenticity of the Siemens modules CP343-1 and CP443-1?
What should you watch out for when operating a port of CP343-1, 6GK7343-1CX10-0XE0 and 6GK7343-1EX30-0XE0 with firmware V2.1 or higher, with 10 Mbit/s half duplex?
Which IO controllers and IO devices support the following functions: IRT, prioritized startup, MRP, PROFIenergy, Shared device, I device and clock-synchronized mode?
Where do you procure the firmware extension for the CP 343-1 ERPC for database connection?
Which SIMATIC S7-300/S7-400 modules support the NTP time-of-day message and how do you activate this kind of time synchronization?
Which modules can you use when implementing software redundancy?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
Which PROFINET nodes support automatic commissioning (device replacement without interchangeable medium) in the case of topological configuration and device replacement without topological configuration?
Which PROFINET nodes support the extended PN diagnostics and what do you have to configure?
Using C-PLUG with network components and SIMATIC CPs
What properties have the communication services and protocols that can be used in the Industrial Ethernet network?
Behavior of the communication processors during data transfer via TCP connections without RFC 1006
What should you watch out for with the ICMP Redirect (Internet control message protocol) function regarding the IP address of the router used for Industrial Ethernet CPs?
What should you pay attention to with the autonegotiation function for negotiating the LAN mode in Industrial Ethernet CPs?
What is the connection between subnet masks and IP addresses with regard to subnetting and supernetting (Classless Inter Domain Routing CIDR)?
Which modules support the S7 routing function?
In the case of open TCP/IP communication via Industrial Ethernet using T blocks with IE CPs and CPUs, why are different amounts of messages sent when the maximum length of 1452 bytes of user data is transferred?
What properties, advantages and special features does the ISO protocol offer?
What properties, advantages and special features does the UDP protocol offer?
What properties, advantages and special features does the ISO-on-TCP protocol offer?
What properties, advantages and special features does the S7 protocol offer?
What properties, advantages and special features does the TCP protocol offer?
What are the requirements for disabling the PROFINET CBA interface for CP443-1EX40?
"Time Wait" with TCP connection setup
What are the different data block lengths for the various protocols of Send/Receive communication?
What is RFC1006 and what do I need this service for?
Meaning and function of the "Keep Alive" in TCP connections
PROFIBUS S7-300/400 CPs -- Product information -- System description
How do you load the 3D, CAx and ePLAN data for the SIMATIC products?
What is the difference between "normal routing" and data record routing?
Which modules can you use when implementing software redundancy?
What are the functional restrictions of old releases and firmware versions for the S7-400 CPUs operating in conjunction with the CP443-5 Extended V6.1?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
Which SIMATIC S7 modules support the "Direct Data Exchange" function (internode communication)?
Meaning of the numeric display in the NCM diagnostics buffer
Which protocols does CP 342-5 support?
Different block behavior of the FC5 and FC50 for Ind. Ethernet S7 300 CPs
Which modules support the S7 routing function?
What properties, advantages and special features does the DP protocol offer?
What properties, advantages and special features does the FMS protocol offer?
What properties, advantages and special features does the S7 protocol offer?
What properties, advantages and special features does the FDL protocol offer?
Serial CPs -- Product information -- System description (protocols)
Which hardware and software components do you need to establish communication between SIMATIC S7 stations and third-party devices using the MODBUS RTU protocol?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
What are the differences between CP441-1 and CP441-2?
Which Details does Technical Support need regarding Inquiries on SIMATIC for S5 / S7 Point to Point communication
What properties, advantages and special features does the RK512 protocol offer?
What properties, advantages and special features does the Data Highway protocol offer?
What properties, advantages and special features does the ASCII protocol offer?
What properties, advantages and special features does the procedure 3964 (R) offer?
What properties, advantages and special features does the Modbus protocol offer?
Which types of connection/protocols do the S7-300/400 CPUs and the CPs support by default?
Part number:

Instructions:
You can connect your controller to various subnetworks depending on which S7-300/400 CPU or CP you are using. The following types of connection/protocols can be used for these subnetworks.
  
Subnet

Connection types/Protocols

MPI
(Multiple Protocol Interface)

S7 communication (S7-300 only as a server)
GD communication (global data communication)
S7 basic communication

PROFIBUS

DP distributed I/O
(via an integrated port, CP342-5 and CP443-5 extended)
FMS - Field bus message specification
(via CP343-5 and CP443-5 Basic)
FDL - Field bus data link
(only via PROFIBUS CP)
S7 communication
(S7-300 only as a server1))

Industrial Ethernet / PROFINET

S7 communication
(via an Ethernet CP or integrated PN interface)
ISO transport
(via Ethernet CP)
ISO-on-TCP (via Ethernet CP or an integrated PN interface)
TCP (via Ethernet CP or an integrated PN interface)
UDP (via Ethernet CP or an integrated PN interface)
E-mail
(via Ethernet CP)
FTP (via Ethernet CP)
PROFINET IO (via Ethernet CP or an integrated PN interface)
CBA (via Ethernet CP or an integrated PN interface)
MODBUS TCP(via Ethernet CPs or integrated PN interface, see Entry ID: 22660304 2))

PTP (point-to-point)

RK 512
3964(R)
ASCII
various print drivers
Modbus (RTU) (master/slave) 2)
Data highway DF1 2)
...

1) S7 300: Client functionality only via CP342-5 from FW V5.2
2)
These types of connection/protocol cannot be configured as standard in STEP 7 and must be installed afterwards.

The manuals on the Ethernet or PROFIBUS CPs tell you which communication services they support.
Furthermore, the following entries contain an overview of the communication services for S7-300/400 Ethernet CPs and S7-300/400 CPUs with integrated PN interface.
 
Module

Entry ID

S7-400  Ethernet CPs 15368142
S7-300 Ethernet CPs 16767769
S7-300/400 CPUs with an integrated PN interface 18909487

The "Technical Data" chapter of the manuals on the S7 300/400 CPUs describe which communication services can be used via the integrated interfaces in the controllers:
 
Module

Entry ID

CPU S7 300

12996906

CPU S7 400
(without an
integrated PN interface)

14016796

CPU S7 400
(with an integrated PN interface)

23904550

Note about S7 communication:
The S7-300 supports S7 communication via the FB14/15 "GET/PUT", FB12/13 "BSEND/BRCV" or FB8/9 "USEND/URCV" function blocks. It works via:

  • the integrated PN interface with the function blocks from the Standard Library -> Communication Blocks.
  • CPs with the function blocks from the SIMATIC_NET_CP library.

In the S7-400, data exchange takes place via the SFB14/15 "GET/PUT", SFB12/13 "BSEND/BRCV" or SFB8/9 "USEND/URCV" function blocks. They can be found in the Standard Library -> System Function Block

Note about communication via the integrated PN interface of the CPU:
Data exchange by means of TCP, ISO-on-TCP and UDP protocols takes place via open IE communication. The connection and data exchange are configured via the following communication blocks:

  • UDT 65 "TCON_PAR" with the data structure for assigning parameters to the connection
  • UDT 66 "TCON_ADR" with the data structure of the addressing parameters of the remote partner (UDP)
  • FB 65 "TCON" for establishing the connection
  • FB 66 "TCON" for clearing down the connection
  • FB 63 "TSEND" for transmitting data via TCP and ISO-on-TCP
  • FB 64 "TRCV" for receiving data via TCP and ISO-on-TCP
  • FB 67 "TUSEND" for transmitting data via UDP
  • FB 68 "TURCV" for receiving data via UDP

You can find further information about the programming and use of the individual types of connection in the following manuals.
 
Manual

Entry ID

System software for S7-300/400
System
and standard functions

1214574
S7 basic communication
S7 communication
Open communication via Industrial Ethernet
PROFINET I/O (SFC 14/15 ("DPRD_DAT/DPWR_DAT")

S7-CPs for PROFIBUS
Configuration and commissioning

1158693
SEND/RECEIVE communication via an FDL connection
DP
FMS

S7-CPs for Industrial Ethernet
Configuration and commissioning

8777865
SEND/RECEIVE communication via
ISO-on-TCP, TCP, UDP or ISO transport connection
PROFINET I/O (FC 9/10 "PNIO_SEND/PNIO_RECV")

Information technology in a
SIMATIC S7 with CP 343–1 IT / CP 343–1 IT GX20 and CP 443–1 IT

1172744
FTP, E-MAIL

PROFINET IO
From PROFIBUS DP to PROFINET IO
Programming manual

19289930

 Entry ID:24352751   Date:2009-12-11 
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