Siemens Simatic S7-400 - System Modifications During Operation

Configuration and operation
4.7 Configuration of the CP in STEP 7 V5
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
45
Behavior when the CP starts up
If duplicate addressing is detected when the CP starts up, the CP remains in STOP. The bus
fault LED is lit and a diagnostics buffer entry is generated. The CP only starts up after the
duplicate addressing problem has been eliminated.
4.7
Configuration of the CP in STEP 7 V5
4.7.1
"Addresses" tab
Assignment to the CPU
If you operate several CPUs in the station in which the CP 443-1 OPC UA is located, you
need to assign the CP to a specific CPU.
To do this in the table "CPU assignment" select the CPU that the CP will be assigned to for
OPC UA communication.
4.7.2
"SNMP" Tab
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.
In the presettings, the CP uses the following community strings to authenticate access to
its SNMP agent via SNMPv1:
Type of access
Community string for authentication
*)
Read access
public
Read and write access private
*) Note the use of lowercase letters!
Free configuration of the community strings is only possible if the security functions are
enabled.
●
SNMPv3
Available only when security functions are enabled
The range of functions of the CP can be found in the section SNMP (Page 120).