Mitsubishi GOT1000 Series Owner's manual

*Nagoya Works **Himeji Works 10
TECHNICAL REPORTS
GOT1000 Series
New Functions and New Products
Authors: Takahiro Kaneko* and Tsuguo Kawasaki**
1. Introduction
Aiming at a “true” display at factory automation
(FA) workstations, the GT15 model of the GOT1000
series (hereafter, “GOT”) and the GT11 standard model
were released in July 2004 with enhanced functions for
stand-alone use, to provide a rapid response,
high-definition display, enhanced troubleshooting,
greater work efficiency such as reduced downtime, high
value-added equipment, and lower total cost. The GT16
model, which is the successor to the GT15, was re-
leased in August 2008 to meet the user demand for
easy-to-understand solutions using moving images for
large-volume data processing, troubleshooting and
downtime reduction, and for network I/F standard fea-
tures. As a lower-cost medium-size model, the GT14
was released in July 2011 featuring improved display
performance and added functionality for data acquisi-
tion (logging), to raise the position of the medium-sized
model to compete with new products and improved
functions introducedby competitors.
Here, we introduce the new functions of the GOT
and the development of the recently-launched me-
dium-sized display GT14 model, in order to meet user
demands such as for uniform management of informa-
tion shared between personal computers connected to
a network.
2. Functional Enhancement of GOT1000
Series
2.1 GOT Solutions
When a failure occurs in production equipment,
rapid detection of the cause and measures to prevent
recurrence are essential for reducing downtime. Thus,
there is a high demand for various troubleshooting
functions on the display for monitoring and viewing the
condition of manufacturing equipment. Table 1 shows
the main GOT functions as indicators for efficiency and
visualization.
With regard to the GOT incorporated in manufac-
turing equipment, many functions have already been
developed not only to improve the equipment operation
and status check, but also to ensure a quick response
to failures on site by identifying the location and cause
of the failure, and to confirm the measures to be taken.
Table 1 GOT Solutions
Solution Efficiency and visualization GOT functions
Trouble-
shooting Efficiency of troubleshooting Early investigation and
analysis of the cause of
troubles on site, and reduc-
tion of down-time
Ladder monitor
function
Operation log function
Remote personal
computer operation
function
Production/
manage-
ment
cooperation
Visualize manufacturing
information by linked per-
sonal computer
Monitor the entire system (on
site) and collectively manage
data by the personal com-
puter in the office
MES interface
FTP server function
On-site
monitoring
and coop-
eration
Remotely visualize the
screen of the on-site GOT
Monitor and maintain the
remote system and equip-
ment
SoftGOT-GOT link
function
FTP client function
VNC server function
As troubleshooting solutions, GOT has a ladder
monitor function that searches for the circuit causing
equipment failure in order to change the value of the faulty
device; a remote operation function for operating a remote
personal computer on which an operator is checking the
manual; and an operation log function for saving historical
data on operations performed on the GOT, to help identify
and analyze the cause of faults. These functions facilitate
troubleshooting at production sites.
The following functions can be used as produc-
tion/management joint solutions with the GOT: an MES
interface function for promptly transmitting the device
values of connected equipment directly to an MES
database to save and manage the data; and an FTP
server function that allows a computer at an office to
read and write information files collected by the GOT
and files with the production control data such as mix-
ing conditions and processing conditions of materials.
In recent years, demand has increased for remote
monitoring and maintenance of overseas factories, in
particular, for viewing and operating GOT screens at
production sites. In response, we have provided a
SoftGOT-GOT link function as a joint solution for on-site
monitoring. With this function, it is possible to display
and operate the same screen as that of the on-site
GOT using SoftGOT on a personal computer with a
network connection to the GOT. The SoftGOT-GOT link
function enables monitoring of manufacturing equip-
ment by collecting screen data from the target GOT and
using it as the screen data for the SoftGOT to display

Mitsubishi Electric ADVANCE June 2013 11
TECHNICAL REPORTS
the same screen.
In remote monitoring and sharing, it is necessary to
periodically monitor the status of the manufacturing
equipment from an office using the FTP server function,
but we have now added the following two functions to
quickly capture any change or abnormality at the pro-
duction site, and for monitoring and operating the GOT
of on-site equipment without the SoftGOT.
(1) File transfer function (FTP client)
(2) *VNC Server function
*VNC: Virtual Network Computing
2.2 New functions of GOT1000 Series
2.2.1 File transfer function (FTP client)
With the conventional GOT, files for abnormality
analysis obtained by the GOT (operation logs, i.e., files
created by a logging function described later) can be
acquired using the FTP server function by a personal
computer with a network connection at the office when
an abnormality occurs at the production site, without
actually going to get the files. However, if such informa-
tion could be obtained at the same time as the abnormal-
ity occurs, the cause could be analyzed immediately.
As shown in Table 2, the new FTP client function
can transmit the files for abnormality analysis to the file
server managed at an office from the on-site equipment
side, based on the information being monitored by the
GOT. These files can then be used to analyze the
status of the manufacturing equipment and the causes,
and quickly restore the system (Fig. 1).
Table 2 File transfer function and conventional functions
Item FTP client FTP server MES interface
Transmission
trigger On-site GOT Office personal computer On-site GOT
Transmission
details File File Device value
Transmission
Timing Equipment event,
Time period
Polling monitor-
ing from the
office
Equipment event,
Time period
Fig. 1 File transfer function (FTP client)
2.2.2 VNC server function
The VNC server function transmits screen images
of the on-site GOT to a remote personal computer
through the network for display by the VNC client of the
personal computer to monitor and operate the GOT.
With this function, both the server and client can be
generally operated. However, if operations are simulta-
neously performed at both the remote and on-site loca-
tions, it may cause unintended operation for the manu-
facturing equipment. To avoid this, the VNC server func-
tion has an operation exclusion function: as shown in Fig.
2, the GOT acting as a server exclusively manages the
operations. When the client side has operational au-
thorization, the GOT disables touch-panel operation and
enables operation only from the client side.
Fig. 2 Authorization of VNC server function
This new function enables the GOT and hence
manufacturing equipment to be operated and controlled
remotely away from the production site, even from a
restricted-access area such as a clean room where
precision industrial products such as semiconductors
and display units are manufactured.
As shown in Fig. 3, manufacturing equipment in
different lines can be monitored and operated by one
GOT by connecting each GOT of the equipment in
multiple manufacturing systems via a network and
using the remote personal computer operation function
(VNC client) of the GOT.
GOT (VNC server) GOT (VNC client)
Stopped
Transmits the
screen image
Manufacturing line BManufacturing line A
Displays the GOT screen
of manufacturing line A
GOT (VNC server) GOT (VNC client)
Stopped
Transmits the
screen image
Manufacturing line BManufacturing line A
Displays the GOT screen
of manufacturing line A
Fig. 3 Combination of VNC server function and remote
personal computer operation function
3. Development of Medium-Sized Display
GT14 Model
3.1 Market demands and challenges of me-
dium-sized display
For medium-sized displays, there is increasing
demand for high-value-added functions to enable clear
GOT (VNC server) Personal computer (VNC client)
Operation
information of mouse
When the office has operational authorization, only operation
information of the mouse is available.
Periodically transmits
screen image
Office
On site
When an on-site operator has operational authorization, only touch-panel
operation is available
Abnormality!
Personal computer
(FTP server)
GOT (FTP client)
Transmits alarm log
file, logging file, and
operation log when
an abnormality
occurs
Office On site Abnormality!
Personal computer
(FTP server)
GOT (FTP client)
Transmits alarm log
file, logging file, and
operation log when
an abnormality
occurs
Office On site

12
TECHNICAL REPORTS
letters and figures and photos to be displayed, data
obtained on site to be brought back to the office using
USB memory, and the data of a display to be operated
from an upper-level personal computer via a network.
However, there were concerns that our medium-sized
display GT11 model was inferior in function and ap-
pearance, and our higher-level model was functionally
sufficient but expensive compared with competitors’
products. Therefore, we developed the GT14 model to
meet the market demand for a medium-sized display
featuring the following at a low price:
(1) Enhanced functions
(2) Differentiation from competitors’ products
(3) Lower price
3.2 Development and challenges of GT14 Model
(1) Enhanced functions
The main specifications of the GT14 model are
compared with those of the conventional GT11 model in
Table 3.
Table 3 Comparison of GT14 model and conventional
model
Item GT14 model GT11 model (Conventional
model)
Liquid
crystal TFT LCD, 65,536 colors STN liquid crystal, 256 colors
Display
Backlight LED Cold cathode tube
Operation part
(touch panel) Analog resistance film type Matrix resistance film type
User memory
capacity 9 Mbytes 3 Mbytes
USB USB device (1ch)
USB host (1ch) USB device (1ch)
Ethernet 1ch None
General-purpose
memory SD card supported CF card supported
Functions Added character font, and
enhanced functions to
improve convenience and
to connect with external
equipment
-
i) Functional advancement of display screen
The GT14 model offers higher power thanks to its
TFT liquid crystal with excellent visibility and 65,536
colors rather than the conventional 256 colors, as well
as new fonts. When increasing the color variation, we
were careful not to decrease the rendering speed. The
increased color variation requires additional color in-
formation which increases the load of the rendering
process, so we raised the rendering speed by using a
more powerful microcomputer and by optimizing the
synthesis method for rendering data according to the
display properties based on window rendering.
The new model also uses approximately 15% less
energy than the conventional model, by using LEDs for
the liquid crystal backlight and improving the efficiency
of the power circuit.
ii) Efficiency of screen design
Users can freely design the display screen using
dedicated rendering tools. The GT14 model allows
parts to be arranged at the pixel level, which is not
possible with the conventional model, by adopting an
analog resistance film-type touch panel. Furthermore,
users can design screens without considering memory
capacity, since user memory capacity has been tripled
to 9 Mbytes.
iii) Enhancement of external interface and logging
function
We have developed new functions by adding USB
hosts, Ethernet and SD card support. Here, we intro-
duce the logging function as an example.
The logging function collects the values of devices
such as a sequencer (or programmable controller) at
any time or at a fixed cycle. The collected data can be
stored in an SD card in CSV file format beforehand, and
the data can be brought back to the office from the
production site using USB memory, etc. This allows
quality control and productivity to be improved by ana-
lyzing the data and giving feedback to the site. It also
possible to efficiently obtain data collected from the
personal computer at the office via Ethernet (Fig. 4).
Fig. 4 Logging function
(2) Differentiation from competitors’ products
As a leading manufacturer of programmable con-
trollers in Japan, we have developed several functions to
enhance compatibility with our programmable controllers.
Examples include an FA transparent function for debug-
ging by connecting a personal computer to our pro-
grammable controller via the display, and a
backup/restoration function. The latter function is used to
store (back up) the configuration information (sequence
programs, parameters, setting values, etc.) of program-
mable controllers in an SD card mounted on the display,
and return (restore) the stored information to the equip-
ment. This allows a system to be backed up and restored
without using a personal computer, and hence easily
replace a faulty programmable controller on site and
promptly restore the system after a fault (Fig. 5).
Office
Programmable
controller Data
acquisition
USB memory, etc.
Factory
Temperature
controller

Mitsubishi Electric ADVANCE June 2013 13
TECHNICAL REPORTS
Fig. 5 Backup/restoration function
To ensure reliability, drainage grooves on the
housing ensure that condensation water inside the
control panel does not penetrate into the display
through the fixed metal fittings of the GT14 model.
(3) Lower price
The GT14 features a new hardware configuration
from the conventional model. We selected highly reli-
able microcomputers and memory devices in consid-
eration of the market trend of electronic components,
and reduced the number of parts by simplifying the
circuit configuration to lower the price.
4. Conclusion
The FTP server function to manage the sending
and receiving of data at the office and the FTP client
function to send and receive data based on the GOT
monitoring information, the SoftGOT-GOT link function
serving as a SoftGOT, and the VNC server function to
display the GOT screen to operate expanded and op-
tional functions, are similar yet have their own charac-
teristics and can be selected as required. The me-
dium-sized highly functional GT14 model helps to meet
a wide range of user needs.
We will strengthen the linkage with FA equipment
such as programmable controllers, which is our
strength, as well as servos and inverters, and empha-
size the benefits of our products to firmly establish our
position in the market.
Reference
(1) S. Hashimoto: Graphic Operation Terminal
GOT1000 Series “GT16 Model,” Mitsubishi Denki
Giho (March 2010).
Restore
Factory
Backup
Programmable
controller
SD card, etc.