System Resource - KEP MMI-1500 Installation & Operation Manual

11.2.3 System Resource

The System Resource dialog shows the status of the HMI resources. This allows you to see the impact of your project on
available memory. This is helpful in determining the cause of System errors. After each item, the amount of memory used is
shown, a "/" and the amount of resources reserved for that item.
Item Description
Memory used / Memory available
Window 0
This is the internal memory that manages Trend
Displays, Event Displays, and some internal data
structures.
The total size of Window 0 depends on the number
of resources allocated to other windows. This
includes the "No. of windows" (setting in System
Parameters) and Fast Selection window.
To calculate the total memory of Window 0, start
with 320kB, subtract 100kB if the Fast Selection
window is enabled, add back 350kB for each
window less than the full 6-window limit ((6 - #) *
350kB).
In this example: (Fast Selection and 4 windows)
Window 0 = 320kB - 100kB + (6-4) * 350k = 920kB
Memory used / The amount of memory reserved
Base Window
for Base Windows.
The amount of memory used / reserved for each
Popup Window 1~6
Popup Window. In this example, No. of windows
is set to 4, so, Popup Windows 5 and 6 are not
used so their total size is zero.
The amount of memory used / reserved for the
Fast Window
Fast Selection Window.
The amount of memory used / reserved for the
Common Window
Common Window.
Timer(1 second) Number of timers / Number of reserved Timers.
The number of timers depends on the number of
active Trend graphs.
Number of timers / Number of reserved Timers.
Timer(0.1 second)
The number of timers depends on the number of
active objects with Periodical functions.
Number of queued messages / Number of reserved
Object Queue (1)
queues.
Object Queue (2)
Number of queued block reads / Number of
PLC Block Queue(1)
reserved queues.
PLC Block Queue(2)
Note: If any item exceeds the reserved limitations, a System Severe Error happens.
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