Operator Terminal System Manual - 11276916.pdf

Effective
communication
System Manual – DOP11A Operator Terminals
Programming
Creating a project
Read the following notes on signal transmission and their optimization for fast and
effective communication between terminal and controller.
Signals that influence the communication time
Only signals for objects in the current block will be read continuously. These include
dynamic object signals. Signals for objects in other blocks will not be read. The number
of blocks does not affect the communication time.
In addition to signals for objects in the current block, the terminal continuously receives
the following signals from the controller:
Display signals (block header)
Block print signals (block header)
LED register
Alarm signals
External confirmation signals for alarms and alarm groups
Login signal (password)
Logout signal (password)
Trend curve register
Register for column objects when min. / max. indicators are used
New display register
Buzzer register
Background lighting signal
Cursor control block
Recipe control block
Library index register
Index register
Register for PLC clock if used in terminal
List erase signal (alarm settings)
No protocol mode control register
No protocol signal
Signals that do not influence the communication time
The following signals do not affect the communication time:
Signals for function keys
Time channels
Objects in alarm texts
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