Communication - Siemens SIMATIC WinCC V11 System Manual

4.3

Communication

Contents
Information that could not be included in the online help.
Using "DTL" data type for area pointers
Use the "DTL" data type for configuration of area pointers "Date/time" and "Date/time PLC".
The "DTL" data type supports time stamp information in the nanosecond range. Because Basic
Panels support time stamp information only down to the millisecond range, you will encounter
the following restrictions when using the area pointers:
● Area pointer "Date/time"
● Area pointer "Date/time PLC"
Communication via routing
The communication of connection partners in various subnets can be routed via the following
links: PROFINET, PROFIBUS, MPI.
RT Advanced communication via Station Manager (SIMATIC NET) with a SIMATIC S7 1200
The following restrictions apply to the PC that communicates with SIMATIC S7 1200 via router
using WinCC RT Advanced or RT Professional:
● Windows 7: Only with SIMATIC NET 8.1 installation
● Windows XP: Communication via Station Manager (SIMATIC NET) is not supported.
These restrictions also apply if you are using WinAC MP or Station Manager. Connections with
the help of the Station Manager of Runtime Advanced are always treated as routed
connections.
Readme WinCC Runtime Advanced V11 SP2 Second Edition
System Manual, 03/2012,
For transmission of time information from a Basic Panel to the PLC, the smallest unit of
time is 1 millisecond. The value range from microseconds to nanoseconds of the "DTL"
data type will be filled with zeros.
For transmission of time information from a PLC to a Basic Panel, the area from
microseconds to nanoseconds will be ignored. The time information will be processed on
the panel down to milliseconds.
Runtime
4.3 Communication
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