Time Synchronization Via Area Pointer - Siemens SIMATIC HMI OP 73micro Operating Instructions Manual

Mounting and connection
4.4 Communication with S7-200
4.4.3.3

Time synchronization via area pointer

Introduction
When the "Date/Time PLC" area pointer is configured, the HMI device reads the date and
time cyclically from the PLC. The position of the "Date/Time PLC" user data area is defined
in the area pointer.
Procedure
To configure the address of the area pointer, select "Communication ▶ Connection", then
select "Area pointer."
Figure 4-24
● Connection
● Name
● Address
● Length
● Acquisition cycle
64
Creating an area pointer
Name of the connection
Default name of the area pointer set by WinCC flexible.
Enter the tag address of the area pointer In the PLC here.
The default length of the area pointer is set by WinCC flexible.
Here, define an acquisition cycle to enable the HMI device to read an area pointer
cyclically. Make allowances for the fact that a shorter acquisition time may have a
negative influence on HMI device performance.
OP 73micro, TP 177micro (WinCC flexible)
Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0