Dns Configuration; Communication With The Cpu - Siemens CP 1243-7 LTE Operating Instructions Manual

Configuration

4.9 DNS configuration

The Access ID (DWORD) is formed from the hexadecimal values of project number, station
number and slot:
Bits 0 to 7: Slot
Bits 8 to 20: Station number
Bits 21 to 31: Project number
4.9 DNS configuration
Configuring DNS servers
Configure a DNS server that can be reached in the network if the module itself or a
communications partner is to be reachable using a host name. The communications partners
also include NTP servers configured via an FQDN.
Configuration options:
● No configuration of a DNS server
If you do not specify an address, DNS server addresses are obtained automatically from
the provider of the mobile wireless network (recommended procedure). The requirement
is that the network provider operates a DNS server in the network.
● Configuration of a DNS server
If you want to use a different DNS server, enter its IP address. In this case, DNS servers
of the network provider are not taken into account.
The addresses of the DNS servers can be configured in the IPv4 or IPv6 format.
4.10

Communication with the CPU

The parameter group is displayed as soon as telecontrol communication is enabled.
Communication with the CPU
Using the first three parameters you specify settings for the cyclic access of the CP to the
CPU. You will find information on the structure of the scan cycle in the section Read cycle
(Page 89).
● Cycle idle time
Waiting time between two scan cycles of the CPU memory area
● Max. number of write jobs
Maximum number of write jobs to the CPU memory area within a CPU scan cycle
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Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE