7.
Opemting
Utility Functions
MELSEC
GOT
7.8
Self-Test of the GOT Main Module Hardware (Self-Test)
a
Display screen
GRAPHIC
FONTROM
MEMCARD USERROM
CHECK
CHECK CHECK CHECK
OS
AREA
COMM.
TOUCHSW
CHECK
CHECK
CHECK
.
Functions
This tests the hardware modules of the
GOT
listed below.
Drawing check
-
Checks visually for sections
of
the display module
Font check
-
Checks visually for distortion in the character font.
Memory card check
-
Checks the memory card hardware.
Internal memory user area check
-
Checks the user area of the internal
Internal memory
OS
area check
-
Checks the
OS
area of the internal
memory.
CPU communications check
-
Checks the status of communications
between the
GOT
and the PC CPU. (This requires a program in the PC
CPU.
Also,
if the MELSECNET is connected, the link parameters are
required as well.)
where colors or display elements are missing.
memory.
Touch keys check- Checks the touch keys.
These are
.
checked by
the GOT.
Operations
(a) Basic operations
Touch the display section of the item to be run.
To operate the various items, follow the messages displayed
on
the screen.
When an item has been completed without errors, a message is displayed, indicat-
If a problem is detected,
an
error message
is
displayed, stating the content of the error.
The following three types of screens are drawn during the drawing check:
ing that
no
problems occurred.
(iJ
The entire screen is displayed in one color.
The
colors used for display change
in the order
of
blue
+
red
+
purple
+
green
+
blue/green
+
yellow
+
white.
@
Basic graphics such as circles and squares are displayed.
@
Ovals and checked patterns are displayed either alternately, or in a superim-
posed display.
To
check CPU communications, the following program and link parameters should
be written to the PC CPU. (Link parameters are necessary only
if
a MELSECNET is
connected.)
7-8
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