Opc Ua" Parameter Group; Parameter Group "Snmp - Siemens SIMATIC S7-400 Operating Instructions Manual

Configuration and operation
4.8 Configuration of the CP in STEP 7 Professional
Time synchronization
● Security disabled
If the security functions are disabled, configure time-of-day synchronization of the CP at
this point. If the CP cannot be synchronized with NTP, the SIMATIC method is used
automatically.
● Security enabled
If security functions are enabled, you will find the parameter group under "Security". In
this case in addition to NTP and the SIMATIC method, the secure method NTP (secure)
can be configured.
For information on the configuration, refer to the section Security > "Time-of-day
synchronization" (Page 64).
4.8.3

"OPC UA" parameter group

OPC UA
In this parameter group you configure the OPC UA server or client function of the CP.
If security functions are enabled, you will find the parameter group under "Security".
For information on the configuration, refer to the section Security > "OPC UA" (Page 67).
4.8.4

Parameter group "SNMP"

SNMP
The CP supports the following SNMP versions:
● SNMPv1
Available with security functions disabled.
Note that with this read and write access to the module is possible. In this case, other
settings are not possible.
The configuration of the community strings is only possible if the security functions are
enabled.
The CP uses the following community strings to authenticate access to its SNMP agent
via SNMPv1:
*) Note the use of lowercase letters!
62
Access to the SNMP agent in the CP
Read access
Read and write access
Community string for authentication in SNMPv1
*)
public
private
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA