Mounting and connection
4.4 Communication with S7-200
OP 73micro, TP 177micro (WinCC flexible)
64
Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0
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 Creating an area pointer
●
Connection
Name of the connection
●
Name
Default name of the area pointer set by WinCC flexible.
●
Address
Enter the tag address of the area pointer In the PLC here.
●
Length
The default length of the area pointer is set by WinCC flexible.
●
Acquisition cycle
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.
