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Siemens CP 343-1 User Manual

Siemens CP 343-1
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Configuration and operation
6.9 Timeofday synchronization
CP 343-1
52 Manual, 12/2018, C79000−G8976−C201-08
6.9
Timeofday synchronization
General rules
The CP supports the two modes explained below for timeofday synchronization:
SIMATIC mode
NTP mode (NTP: Network Time Protocol)
No automatic changeover to daylight saving time is defined in NTP. As a result, you may
need to implement this changeover using a program application.
Project engineering
For more detailed information on configuration, refer to the online help of the "Time-of-day
synchronization" parameter group and in Part A of the manual /1/ (Page 71).
6.10
SNMP agent
SNMP (Simple Network Management Protocol)
SNMP is a protocol for managing networks. To transmit data, SNMP uses the
connectionless UDP protocol.
The information on the properties of SNMPcompliant devices is entered in MIB files (MIB =
Management Information Base).
The CP supports data queries via SNMP in Version 1. It returns the contents of certain MIB
objects according to the MIB II standard, LLDP MIB, Automation System MIB and
MRP Monitoring MIB.
MIB file and SNMP profile file
You will find the MIB file and the SNMP profile file of the module in the STEP 7 installation in
the folders "S7DATA" > "snmp" under the name of the module.
Further information
For more detailed information on working with MIB files, refer to the documentation of the
SNMP client you are using (example of an SNMP client: SNMP OPC server from
SIMATIC NET).
You will find more information on MIBs on the following SIMATIC NET Internet page:
15177711 (http://support.automation.siemens.com/WW/news/en/8797900)

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Siemens CP 343-1 Specifications

General IconGeneral
Product Type DesignationCP 343-1
Power Supply24 V DC
Protection ClassIP20
Product TypeCommunications processor
InterfaceEthernet
Data Transmission Rate10/100 Mbit/s
Protocols SupportedTCP/IP, UDP
Number of Ports1
Operating Temperature0 to 60 °C

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