SECE-B5E
About PWS3700
About PWS3700
E.1 Introduction
The PWS3700 is equipped with a 10.4" VGA sized (640Hx480V)
flat panel display and analog resistive touch screen. The IP
65 (NEMA 4) rated front panel seal and industrial grade
touch screen make the product rugged and durable. There are
two display options: color TFT LCD, and color DSTN LCD. You
can choose appropriate ones according to your application's
requirement. Every PWS3700 Workstation comes with a LPT port
that allows you to hardcopy the current screen. This is a
way of generating documents with sophisticated formats. The
upgraded model PWS3700 is a unique designs and compatible
with PWS3100 as well.
This chapter describes how to install your Workstation in a
panel, set its DIP switches, and make cables for its
communications and printer ports.
E.2 General Specification of PWS3700
Item
enhanced
Display Type
Display Color
Display Size
Number of Pixels
Display Adjustment
Back Light
Touch Screen
Flash Memory
Battery Backed
Memory
Communication Ports
Printer Port
Power Consumption
Operating
Temperature
Ambient Humidity
Storage Temperature
Front Panel Seal
Vibration Endurance
Shock Endurance
RF Emissions
PWS3720-DTN
PWS3720-TFT
Color DSTN LCD
Color TFT LCD
16 colors
16 colors
10.4" (diagonal)
640x480
Contrast only
Brightness only
CCFT
CCFT
Analog resistive type; Max. Number of
switches are 80x60
Chemically strengthened glass backing panel;
Over 1 million point activations;
Hard coat is resistant to most solvents and
chemicals
1600KB (1408K Byte for application)
192KB SRAM
COM1: RS232/RS422/RS485; COM2:
RS232/RS422/RS485
Centronics compatible
24VDC10%;12W
24VDC10%;15W
0~50C
0~55C
20-90% RH (non-condensing)
-20~70C
-20~70C
IP 65 / NEMA 4
0.5mm displacement, 10-55Hz, 2 hours per X,
Y, and Z-axis directions
10g, 11ms three times in each direction of X,
Y, and Z axes
CISPR 22, Class A
E-1
Supplement E
Electrostatic
Discharge
RF Susceptibility
High Frequence
Transients
Weight
Cooling
PLC Workstation
IEC 801-2 Level 3
IEC 801-3 Level 2
IEC 801-4 Level 2
3.2 Kg
3.2 Kg
Natural cooling
E-2
About PWS3700
E.3 Dimensions of PWS3700
This section illustrates the dimensions of the Workstations
themselves as well as the cutout dimensions (287.5x211.5mm).
The unit of dimensions is millimeter. You should allow 10 cm
(4") of clearance behind the workstation
for cable
connectors and 5 cm (2") above and below for airflow.
E-3
Supplement E
PLC Workstation
Method of installation: Mount the PWS to the
preserved hole from the front side. Attach the
mounting brackets from behind, and fasten the
screw of the brackets with a screwdriver.
Don't tighten the screws with too much force or it may cause
a damage of the panel.
E-4
About PWS3700
E.3.1 Torque Specifications
After placing the Workstation in the cutout, you should
tighten each nut to 0.07 newton-meters (10 inch/pounds) of
torque. If you don't have a torque wrench, then try to
tighten the nuts to compress the gasket to about 50% of its
original thickness.
E.4 Power Connector
The three-position power connector accepts 24VDC only. The
unit's power consumption is shown in the following:
Item / Model
Power Consumption
Fuse Rating
37xx-DTN
24VDC10%
12W
1A
37xx-TFT
24VDC10%
15W
1A
Be sure to use all three terminals when connecting power. To
make a connection, strip about 0.64 cm (1/4") of insulation,
turn the screw counter-clockwise until the gap is wide open,
insert the wire all the way in, and turn the screw clockwise
until it's tight.
E.4.1 Electrical Grounding
You must make sure that your Workstation is properly
connected to earth ground, to prevent it from radiating
radio frequency noise. You should also ensure that the
Workstation is on the same ground as any other equipment
connected to its communications ports.
If you connect a communications cable to your unit after
static electricity has built up or when the Workstation and
the other device are on different grounds, the resulting
discharge could damage the electronics in either device.
E.5 Touch Panel
The PWS3700 is equipped with a 10.4" sized
display and 12.1" analog resistive touch screen.
flat
panel
You can design touch keys for each of your screens. You can
configure a touch key to display another screen or control
an on/off location within your PLC. The shape of the touch
key must be rectangular, but the size of a touch key is
configurable and can be as small as a single touch switch or
as large as the entire screen. One screen can have up to
80x60 touch keys for PWS3700. For each changeable Object of
a screen, the Compile function of ADP3 automatically groups
those touch switches that the display area of the Object
covers to form a touch key for the selection purpose.
E-5
Supplement E
PLC Workstation
When you press a touch key, the Workstation responds by
sounding the buzzer for 200 milli-seconds (default) and
reversing the color of that touch key for 200 milli-seconds.
With the feedback, you know the Workstation accepts your
key-press. You can use Miscellaneous Settings dialog box of
ADP3 to set the parameter of touch screen for your
Workstation.
E.5.1 Built-in Touch Keypad
The built-in touch keys are touch keys that the ADP3
automatically configure for your application so that you
don't have to spend any time to program them. The built-in
touch keys allow the operator to select and change a PLC
location very easily.
There are two groups of built-in touch keys called Numeric
Touch Keypad and Password Reentering Keypad that the
Workstation displays for you to change data. The Numeric
Touch Keypad Its image is shown in the Figure E-1/E-5.
Figure E-1
Figure E-2
E-6
Figure E-3
About PWS3700
Figure E-4
Figure E-5
E.5.2 Common Keys and Auxiliary Keys
There are two kinds of keys you can configure for the 3700
with the ADP3:
1) Common
Keys - A common key is used to activate a
designated function no matter what the current screen is.
For example, you can press the key K01 to return to the
screen 1 whenever you want if the key is configured as a
common key that goes to screen 1. To configure common keys
for
your
application,
select
Common
Keys
on
the
Application sub-menu of the ADP3 as shown in the Figure E6.
E-7
Supplement E
PLC Workstation
Figure E-6
2) Auxiliary Keys - A screen can
have a number of auxiliary
keys. The auxiliary keys of a
screen are available for use
only when that screen is the
current screen. To configure
auxiliary keys for a screen,
select that screen first and
then select Auxiliary Keys on
the Screen sub-menu.
Figure E-7
E-8
About PWS3700
E.5.3 Calibrating Touch Panel
Figure E-8
To calibrate the touch panel,
1 Press Calibrate button on the System Menu. The Select
. Item box appears.
2 Press Touch Panel button on the Select Item box. A white
. dot appears on the upper-left corner of the screen and
the message "Pin-point the white dot of membrane on the
upper-left corner” appears.
3 Use a pencil that is not sharp or anything that is soft
. and suitable to pin-point the white dot on the screen.
The small dot moves to the lower-left corner of the
screen and the message changes to "Pin-point the white
dot of membrane on the lower-right corner.”
Do not use anything that is made of metal or is sharp,
such as a screw driver or ball pen to pin-point the touch
panel.
4 Pin-point the white dot again. The calibration
. completed. The System menu displays again.
E-9
is
Supplement E
PLC Workstation
E-10
About PWS3700
E.6 Setting of DIP Switches
There are ten DIP switches that you can access through the
back cover. The purposes of these switches are stated in the
following:
SW2
ON
ON
SW1
ON
OFF
Type of Display
TFT (PWS-37xx)
DTN (PWS-37xx)
SW4
ON
OFF
OFF
SW3
ON
OFF
Running Mode
Runs user application.
Runs burn-in test program.
Runs bench test program.
SW5
ON
OFF
SW6
ON
OFF
SW7
ON
OFF
SW8
ON
OFF
Communication Parameters
The Workstation uses the parameters set in the
Configuration Table for PLC communications.
The Workstation uses the downloaded parameters for
PLC communications.
Password
The Workstation asks the operator to enter a
password after power-on self-test.
No password is required to start the Workstation.
System Menu
The Workstation displays System Menu after it gets
a legal password or after power-on self-test if SW6
is off.
The Workstation doesnot display System Menu.
The default
requires no
The default
requires no
Default User Level
user level is one if the Workstation
password to start its operation.
user level is three if the Workstation
password to start its operation.
SW9
ON
OFF
COM1 Port
Enable RS485 circuitry of the COM1.
Enable RS422 circuitry of the COM1.
SW10
ON
OFF
COM2 Port
Enable RS485 circuitry of the COM2.
Enable RS422 circuitry of the COM2.
E-11
Supplement E
PLC Workstation
E-12
About PWS3700
E.7 Self Test
After power is applied, the Workstation runs a self-test
that checks its hardware. After each test, the Workstation
displays the result as shown in the following example. The
version number of ROM BIOS refers to the EPROM chips, which
will likely never change. If your Workstation doesnot have
battery or doesnot process data that should be keeped by
battery such as recipes and nonvoltile logged data, you can
choose not to test the battery by disable "Battery check” in
the Configuration Table.
PWS-3700 Series PLC Workstation
ROM BIOS Version 1.0
(C) 1998 Hitech Electronics Corporation
Display Type ......................... Color TFT Display
System RAM Size ...................... 192 Kbytes
Video RAM Size ....................... 512 Kbytes
Firmware Memory Size ................. 192 Kbytes
User Memory Size .....................1408 Kbytes
Working RAM Test ..................... Passed
Battery Status ................................ Failed
BIOS ROM Checksum .................... Passed
Firmware Memory Checksum.............. Passed
User Memory Checksum ................. Passed
Source code Checksum ................. None
RTC Function Test .................... Passed
RTC Register Test .................... Passed
RTC Register Checksum ................ Passed
Communication Port 1 Test ............ Passed
Communication Port 2 Test ............ Passed
Printer Port Test .................... Passed
DIP Switches Setting (8..1) .......... 11011011
If you have never configured your Workstation, the self-test
may report a failure of the real time clock. If this happens,
configure as described in section E.10. If you have never
downloaded an application to the Workstation, the self-test
may report a problem in the flash chips. You can ignore
these errors. If you have interrupted a download to the
Workstation by switching off the power, disconnect the
communication cable, or click cancel button in the ADP3
while a download is in progress, the self-test may report a
problem in the Firmware Checksum or Application Checksum.
You can ignore these errors and try to download again.
If there are any items of the self-test the Workstation
doesn't pass, the message "System error is detected! Press
E-13
Supplement E
PLC Workstation
screen to continue.” appears. The Workstations continues its
operation after you press screen.
E-14
About PWS3700
E.8 System Menu
After the user level is determined by a password or by the
default, the Workstation displays System Menu if the DIP
switch No.7 is on; If DIP switch 7 is off, the Workstation
starts running your application immediately.
The buttons
following:
on
Button
Run
Configure
Calibrate
Download
Application
Upload
Application
Download
Source code
Upload
Source code
Copy Application
the
System
Menu
Function
are
summarized
in
the
User
Level
Starts running your application.
1-3
Allows you to set the Workstation's 1
operating parameters.
Allows you to calibrate the touch
1
panel and set the contrast or
brightness of the display.
Allows you to download an
1
application to the Workstation from
a PC or another Workstation.
Allows you to upload the
1
application in the Workstation to a
PC.
Allows you to download the Source
1
code to the Workstation from a PC
or another Workstation.
Allows you to upload the Source
1
code in the Workstation to a PC.
Allows you to copy the application
1
in the Workstation to another
Workstation.
E-15
Supplement E
Download Recipes
Upload Recipes
Copy Recipes
Exit
PLC Workstation
Allows you to download recipes to
the Workstation from a PC or
another Workstation.
Allows you to upload the recipes
saved in the Workstation to a PC.
Allows you to copy recipes saved in
the Workstation to another
Workstation.
Starts from the self-test again.
E-16
1
1
1
1-3
About PWS3700
E.9 Downloading Application
To make the Workstation ready for receiving downloaded
application, press the Download Application button on System
Menu. The Workstation displays the message "Waiting for
downloading...” when it is ready.
Figure E-9
After downloading, the System Menu is active again.
You should have a cable with the following connection for
the download.
PWS-COM2
PC COM RS232C
PWS to PC's 9-pin connector 25-pin female --CABLE---25-pin female
PWS-COM2
PC COM RS232C
25-pin female --CABLE--- 9-pin female
PWS to PC's 25-pin connector
Warning: To avoid electric
switch off the power when
shock, be sure to
E-17
Supplement E
PLC Workstation
connecting the communication/download cable to the PWS
unit.
E-18
About PWS3700
E.9.1 Downloading Recipes
To make the Workstation ready for receiving downloaded
recipes, press the Download Recipes button on System Menu.
The
Workstation
displays
the
message
"Waiting
for
downloading...” when it is ready. You may download recipes
to the Workstation from a PC or another Workstation. After
downloading, the System Menu is active again.
E.9.2 Downloading Source Code
To make the Workstation ready for
application's source code, press the
button on System Menu. The Workstation
"Waiting for downloading...” when it is
receiving downloaded
Download Source Code
displays the message
ready.
E.10 Setting Operating Parameters
You can use Communication Parameter dialog box of ADP3 to
set the parameters for the communications between your
PWS3700 and PLC. The parameters set in ADP3 is transmitted
to the Workstation along with all other data when you
download an application.
To
get
Communication
Parameters
dialog
box,
click
Communications button in Workstation Setup dialog box. The
Communication
Parameter
dialog
box
appears
with
the
following options:
Figure E-10
E-19
Supplement E
PLC Workstation
The Workstation uses these parameters for PLC communications,
if the DIP switch No.5 is off. If DIP switch 5 is on, the
parameters set in the Configuration Table will be used for
PLC communications.
E-20
About PWS3700
To set up the Operating Parameters of the Workstation, press
the Configure button on System Menu. The Workstation
displays Configuration Table as shown below.
Following are descriptions of each of these parameters. To
move among fields, press arrow buttons; to change a
parameter, press [+] or [-] to adjust the value or selection.
When you are finished, press [Save & Quit] to save all
changes you made or press [Quit] to abandon all changes.
Parameter
Description
Date
(mm-dd- You can set the date in the Real Time Clock
yy)
chip.
Day
week
of
the You can set the Day-of-week in the Real Time
Clock chip.
Time
(hh:mm:ss)
You can set the time in the Real Time Clock
chip.
Printer
Select Enabled if you have
default setting is Disabled.
PLC
communication
port
Select either COM1 or COM2 to specify the
port that is connected to the PLC. Select
Disabled if you want to disable the PLC
communications.
When
you
disable
PLC
Communications,
the
Workstation
doesn't
communicate with the PLC but still can
display screens. The default setting is COM2.
E-21
printer.
The
Supplement E
PLC Workstation
Synchronizati
on
Select
Enabled
if
you
want
the
synchronization function to be enabled. The
default setting is Disabled.
Baud rate
Select 4800, 9600, 19200, or 38400 baud to
specify the baud rate for communications
between the Workstation and the PLC. The
default setting is 9600.
Parameter
Parity
Description
Select the parity of the communications
between the Workstation and the PLC. Your
choices are None, Odd, or Even. The default
setting is None. If you set "Parity" to None,
then you cannot set "Data size" and "Stop
bits" to 7 and 1; you must set these
parameters either to 8 and 1 or to 7 and 2.
Data
Select 7 or 8 to specify the number of data
bit
for
communications
between
the
Workstation and the PLC. The default setting
is 8. If you set "Data size" to 8, then you
must set "Stop bits" to 1.
Stop bits
Select 1 or 2 to specify the number of stop
bits for the communications between the
Workstation and the PLC. The default setting
is 1.
CTS
handshaking
Select Enabled or Disabled to specify if the
Workstation should wait to transmit until the
CTS input on the communication
port is
asserted. This is sometimes called "hardware
handshaking."
The
default
setting
is
Disabled.
Command delay
Enter a number between 0 and 255 to specify
the amount of time that the Workstation waits
between sending commands to your PLC. The
unit of time is 10 milliseconds and the
default is 0. In virtually all cases, you
should leave the "Command delay" at 0.
However, many PLCs consume additional scan
time
to
service
requests
from
the
Workstation, and if you find that your PLC's
scan time is too long, you can increase the
"Command delay" to slow down the Workstation.
Battery check
Select Enabled if you want the Workstation to
check the battery during self-test. The
default setting is Disabled.
E-22
About PWS3700
Screen saver
time
PLC
code
Enter a number between 0 and 60 to specify
the time that the Workstation turns off the
back light of the display if the touch panel
has not been touched for that amount time.
The unit of time is minute. This is for
lengthening the life of the CCFT back light.
If you set "Screen saver time" to 0, the
Workstation never turns off the back light.
model Select a number to specify the sub-type of
your PLC. This parameter is only useful for
some types of PLCs.
Workstation
node address
Select a number to specify the address of
your Workstation. This parameter is only
useful for some types of PLCs.
Download/Uplo
ad/Copy port
Select either COM1 or COM2 to specify the
port that you use to download, upload, and
copy application and recipes. The default
setting is COM1.
E.11 Serial Communication Port2 (COM2)
COM2 is a serial port that supports RS-232, RS-422, and RS485 operation.
The pin assignments of the port are listed in the following
table:
Pin
1
2
3
4
5
6
7
Function
Chassis ground
RS-232 TXD
RS-232 RXD
RS-232 RTS
RS-232 CTS
(no function)
Signal ground
8
(no function)
Pin
14
15
16
17
18
19
20
21
9
(no function)
22
10
11
12
(no function)
(no function)
RS-422 CTS+
23
24
13
RS-422 CTS-
25
*
Function
RS-422 TXD+ and RS-485 TXD/RXD+
RS-422 TXD- and RS-485 TXD/RXDRS-422 RXD+
RS-422 RXD(no function)
(no function)
(no function)
RS-422 terminating resistor for
RXD-; the other terminal of the
resistor (120, 1/2W) is already
connected with the RXD+
RS-422 terminating resistor for
CTS-; the other terminal of the
resistor (120, 1/2W) is already
connected with the CTS+
RS-422 RTS+
RS-422 RTS(no function) /24V DC power
input
* Consult the factory if you want to use these
two pins
E-23
Supplement E
PLC Workstation
E.11.1 Serial Communication Port1 (COM1)
COM1 is a serial port which supports RS-232, RS-422, and RS485 operation. The pin assignments of the port are same as
COM2. See section E.9 for the examples of connections.
E.11.2 Printer Port (LPT)
LPT is a parallel printer port that can drive a Centronicstype parallel printer. The connector is compatible with the
IBM PC's parallel printer connector.
Following are the pin assignments on the LPT connector:
Pin
Direction
Function
Pin
Direction
Function
1
2
3
4
5
6
7
8
9
Output
Output
Output
Output
Output
Output
Output
Output
Output
Data Strobe
D0 - data bit 0
D1 - data bit 1
D2 - data bit 2
D3 - data bit 3
D4 - data bit 4
D5 - data bit 5
D6 - data bit 6
D7 - data bit 7
10
11
12
13
14
15
16
17
18-25
Input
Input
Input
Input
Output
Input
Output
Output
SG
Acknowledge Not
Busy
Paper Empty
Printer Selected
Auto-feed
Error Not
Reset Not
Select
Signal ground
E.12 Entering Password
After the self-test, if the DIP switch No.6 is on, the
Workstation displays a keypad to prompt you to enter a
password. If DIP switch No.6 is off, the Workstation doesn't
ask you to enter a password and the default user level is 1
after the power-on self-test if the DIP switch SW8 is set to
on; the default user level is 3 if the SW8 is set to off.
If a password is required, the Workstation doesn't continue
its operation until a legal password is entered.
E.12.1 Password and User Level
The Workstation saves passwords in the Real Time Clock chip.
A password must have eight numeric characters. When you
create a password, you must specify the user level
associative with that password. The user level of a password
determines the privilege of the user who enters that
password to start the operation of the Workstation. When a
user wants to use the function of the System Menu, change to
another screen, or make change to a PLC location, the
Workstation checks the user's user level. There are three
user levels: level 1, level 2, and level 3. Level 1 users
have the highest privilege and Level 3 users have the lowest
E-24
About PWS3700
privilege.
The passwords and their user levels of your application are
unpredictable until you define them.
E.12.2 Registering Passwords
To register new passwords or modify existing passwords for
your application, you have to create an Action button on a
screen and assign the function "Display Password Table" to
that button. When the Workstation is running the application,
a level 1 user can get the password table as the example
shown below when he presses and releases an Action button
that displays the Password Table.
You can register up to eight passwords for your application.
To change a password or the user level of a password,
(1
)
Select the password or the user level by touching it.
(2
)
If you select a user level, enter a number between 1
and 3 to change the user level. If you select a
password, enter eight numeric characters to change the
password. When you press [ENTER], the Workstation
accepts the change.
(3
)
To abandon the current change, select another field to
exit the current selection.
(4
)
To save all changes that you made to the password
table,
press [Save & Quit]. To abandon all changes, press
[Quit].
E-25
Supplement E
PLC Workstation
Figure E-11 Numeric keys for password table
entering a password
Figure E-12
E.13 Adjusting Display Contrast/Brightness
You can adjust the contrast of the DSTN LCD or the
brightness of the TFT LCD at any time the Workstation is
running your application. To increase the contrast or
brightness, press an Action button which is assigned the
function of “Contrast Up.” To reduce the contrast of
brightness, press an Action button which is assigned the
function of “Contrast Down”. To save the setting, press an
Action button which is assigned the function of “Save
Contrast”. The user can calibrate the LCD contrast by
pressing the "Calibrate" button on System Menu as well. The
Workstation displays Select item as shown below.
Figure E-13
E-26
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