Siemens CP 343-1 - Manual (Page 49)

9 Further Notes on Operation
B3L−49
CP 343-1 Lean for Industrial Ethernet / Manual Part B3L
Release 03/2007
C79000-G8976-C198-04
S Recommendation: Change “individual network settings” only over MPI.
If you modify the LAN settings in the properties dialog of the CP in the “Port
Parameters” tab, these changes will be adopted by the CP and activated when
the configuration data is downloaded to the CP.
We therefore recommend that you download configuration data to the S7
station over an MPI connection if you change this setting.
If you download the configuration data over the LAN interface, depending on
the selected setting, it is possible that the current download will not be
completed due to the changes to the configuration taking immediate effect.
STEP 7 / NCM Diagnostics and Web diagnostics display the network setting
You will find information on the network settings currently being used in NCM
Diagnostics in the “Industrial Ethernet” diagnostic object in the “Network
Attachment” section or in Web diagnostics on the “Industrial Ethernet” page in the
“Parameters” tab.
9.3 SNMP Agent
SNMP (Simple Network Management Protocol)
The CP supports data queries over SNMP in version 1.
SNMP is protocol language for managing networks. To transmit data, SNMP uses
the connectionless UDP protocol.
The information on the properties of SNMP−compliant devices is entered in MIB
files (MIB = Managed Information Base). 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).
Supported MIB Objects
The CP supports all MIB objects according to the MIB standard MIB II (RFC 1213)
and LLDP MIB.
Exceptions / restrictions:
S Write access is permitted only for the following MIB objects:
sysContact, sysLocation and sysName;
For security reasons, only read access is permitted for all other MIB objects.
S Traps are not supported by the CP.