Cautions - Mitsubishi Electric F930GOT-BWD Operation Manual

Graphic Operation Terminal GOT-F900
17.6

Cautions

When many points are registered or when many observe status operations are performed as
described below, it takes considerable time until the operations are completed. As a result, the
response time of the GOT may be affected.
• When many triggers are set to "Momentary"
• When the observe status cycle is set to "always" or the cycle has a short set time, and many
triggers are realized causing a high number of write operations to be performed.
Effect on GOT
• Effect on functions and objects which are actuated at a constant cycle:
Functions which are cyclically actuated may not be executed in accordance with their
setting. For example, the observe status function (monitoring cycle), sampling function,
alarm history/list function, the current time function and the trend graph function may be
affected.
• Effect on screen transfer data:
When the display is automatically changed to the PLC transfer screen, and screen data is
transferred, the message "Main unit processing error" may be displayed in the screen
creation software.
In such a case, change over the display to the PLC transfer screen by key operation. Then,
screen data can be sent and received.
• Effect on the monitoring function, screen changeover function and key operation:
Specified operation may be delayed for screen changeover, monitoring and key operation in
the same way as the description above.
• Effect on the built-in 2PIF function:
When circuit monitoring, device batch processing or monitor registration is executed in a
peripheral unit, a communication error may occur in that unit.
Observe status function 17
17-7