Application and functions   
1.5 Other services and properties 
  CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1 
14  Operating Instructions, 01/2017, C79000-G8976-C426-03 
–  SIMATIC WinCC OA 
–  Third-party systems that support the DNP3 specification named above. 
Properties of the telecontrol CP 
● 
 
The process values are configured as data points for the communication. The data points 
access PLC tags in the CPU. The data points can be processed one-to-one in the control 
system. 
● 
 
With configurable events in the process image of the CPU, the CP 1542SP-1 IRC can 
send messages as e-mails. The data sent by e-mail is configured using PLC tags. 
● 
 
The CP 1542SP-1 IRC can store events of different classes and transfer them together to 
the communications partner. 
● 
 
Analog values can be preprocessed on the CP 1542SP-1 IRC according to various 
methods. 
 
Other services and properties 
Further services and properties of the CP 
● 
 
–  Address types 
The CP supports IP addresses according to IPv4 and IPv6. 
–  Addressing 
The IP address, the subnet mask and the address of a gateway can be set manually 
in the configuration. As an alternative, the IP address can be obtained using program 
blocks. 
–  DHCP: As an alternative, the IP address can be obtained from a DHCP server. 
–  DCP (Discovery and Configuration Protocol) is supported. 
● 
Time-of-day synchronization
 
–  NTP 
On the Ethernet interface, the CP can synchronize its time of day via NTP.