Chapter 3

Installation and Connections

E271-2210 Serial Controller

Installation
Mounting the Controller and Connecting Chassis Ground
Connections
Power Connections
Serial Connections
Touchscreen Connections

E271-2201 PC-Bus Controller

Installation
Connections
AccuTouch
DuraTouch

2500S Serial Controller

Installation
Mounting the Controller and Connecting Chassis Ground
Connections
Power Connection
Serial Connection
Touchscreen Connection

Diagnostic LEDs

E271-2210 Controller
E271-2201 Controller
2500S Controller
Remote LED Capability

The installation procedure for a SmartSet controller consists of setting the jumpers on the controller, physically installing the controller, and making connections to the controller. Use only Elo supplied or approved cabling for best operation and to insure full regulatory agency compliance.

Read Chapter 2 to determine the jumper settings before installing the controller.

CAUTION

All Elo AccuTouch touchmonitors have transient protection installed. If you are not using an Elo touchmonitor, see the AccuTouch Product Manual for important information.

 

 

 

E271-2210 Serial Controller

Installation

This section assumes you are integrating the AccuTouch E271-2210 serial controller board into your system as a component. The controller is also available in kits and enclosures with cabling and a power supply. See the AccuTouch Product Manual for various integration options.

The following information gives you the controllers' mounting dimensions, the touchscreen connections, the power connections and requirements, and the output connections. It is your responsibility to determine how best to mount the controller and output connector in the display or separate enclosure, and provide a power supply.

An Internal AccuTouch Touchscreen Controller Mounting Kit (P/N 734849-000) is available from Elo for mounting the E271-2210 controller inside a display. It includes wiring harnesses and cables, mounting hardware, and a DB9 female bulkhead connector. A power supply is available separately (P/N 742067-000).

Mounting the Controller and Connecting Chassis Ground

The mounting dimensions for the E271-2210 controller shown in Figure 2-2. Remember that the cable headers will increase the space required.

The mounting holes fit common 0.156 inch plastic snap-in standoffs. A chassis ground connection is required through one of the plated mounting holes (PTH) to provide a return path for the on-board transient protection. Conductive mounting hardware can provide a chassis ground connection for the controller.

Connections
Power Connections

The E271-2210 controller operates on a single voltage, positive with respect to ground. See power requirements.

Connect a power cable harness to P4 on the controller, a 1x2 header with pins on 0.100" centers. The recommended mating plug is a Molex polarized, locking crimp terminal housing #22-01-3027. The power connection is labeled to designate the positive (+) and ground (-) pins. Connect a power supply (such as Elo P/N 742067-000) to the harness and then to AC.

You may provide a suitable power supply and cabling, or Elo can provide them. See the AccuTouch Product Manual for details.

CAUTION

Observe polarity when connecting the power leads to the power supply. Reversing polarity may damage the controller.

 
 

 

Serial Connections

The E271-2210 controller operates at standard RS232C levels. The serial port connection is at P2 on the controller, a 2x5 header with pins on 0.100" centers. It is configured so a ribbon cable and commonly available insulation displacement connectors (IDCs) may be used.

The controller only requires a 2-wire connection, Transmit Data (TXD) and Signal Ground (GND). Transmit Data should be connected to your computer's Receive Data (RXD) pin. For two-way communications, the controller's Receive Data pin should also be connected to the host's Transmit Data pin

Data Set Ready (DSR) and Clear to Send (CTS) may be used by the host to verify controller connections and operation. DSR is asserted when power is applied to the controller and CTS is asserted when the controller's power-on sequence is complete. Data Terminal Ready (DTR) and Request to Send (RTS) can also be connected for full hardware handshaking.

Most Elo drivers require two-way communication and all four handshaking lines. (Some drivers may also be configured to allow simple one-way communication without needing any handshaking lines.)

P2 Pins

Signal

DB25

DB9

1

DCD

8

1

2

DSR

6

6

3

RXD

3

2

4

RTS

4

7

5

TXD

2

3

6

CTS

5

8

7

DTR

20

4

8

RI (N/C)

22

9

9

GND

7

5

10

Key

Figure 3-1. P2 Serial Connector Pin Positions, End View

If you are installing the controller inside a display, for the convenience and safety of the user, we recommend making a cable which connects P2 to a DB9 female connector (male connectors are used with external controllers) mounted on the back of the display. The shell of this connector should be tied to chassis ground. Use an additional cable from the back of the display to your serial port.

Elo can provide suitable adapters and cabling. See the AccuTouch Product Manual for details.

Touchscreen Connections

A five conductor ribbon cable is attached to the AccuTouch touchscreen. The female connector on the cable mates with the controller's 1x5 touchscreen connection at P3 (see Figure 3-2). Inverting this connection effectively rotates the touchscreen 180°. If you are installing the controller outside the display cabinet, you may need to make up a short cable with a connector that mates with the touchscreen connector, and a connector on the other end to suit the installation. Depending on the type of installation, you may or may not need to install transient protection as described below.

Transient protection is required in all installations where it is possible to turn the display on or off while the touchscreen is disconnected from the controller. For more information on transient protection, see the AccuTouch Product Manual.

  1. If Elo installed the touchscreen, and the controller is external, a cable with transient protection is already installed, terminated with a DB9 male connector mounted on the back of the display. You will need a cable from the DB9 connector to the controller. DB9 pin connections for Elo installed touchscreen cables are:
1-S, 6-X, 7-Y, 8-L, 9-H
  1. If you are installing the touchscreen, and the controller will be located inside the display cabinet, you will need to make a data cable, but no touchscreen cable is required.
  2. If you are installing the touchscreen, and the controller will be outside the display cabinet, you must make a touchscreen cable with transient protection.

Figure 3-2. P3 Touchscreen Connector Pin Positions, End View

E271-2201 PC-Bus Controller

Installation

Follow these steps to install the E271-2201 controller:

  1. Discharge any static charge on your body by touching the back of the computer cabinet.

  2. Note the Base I/O Port and Interrupt for use with your driver software. The factory default settings are 280 (hex) and no Interrupt (Polled Mode). Eight consecutive I/O ports are used by the E271-2201. Ports 280-287 are typically not used by other devices. Elo driver software sets the Interrupt through software setup.

  3. Turn the computer off and unplug the AC power cord from the outlet.

  4. Remove the computer's cover. Refer to the computer user's manual for this step.

  5. Choose an available expansion slot. On a PC/XT, do not use slot 8. On an AT, any slot may be used.

  6. Remove the retaining screw for the expansion slot's access bracket, then remove the bracket.

  7. Insert the controller into the expansion slot. The controller should seat fully and the access bracket should mate with the frame of the computer.

  8. Replace the retaining screw, insuring that the controller remains seated in the socket.

  9. Replace the computer's cover.

  10. If you have a touchmonitor, plug the DB9 female end of the supplied touchscreen cable into the DB9 male connector labeled "Touchscreen Interface" on the back of the touchmonitor case. Attach the opposite end of the cable, DB9 male, to the DB9 female connector on the controller. Do not confuse the touchscreen and video connections.

If you do not have a touchmonitor, see Connections.

  1. Plug the AC power cord back in and reboot the computer.

Connections

AccuTouch

The AccuTouch touchscreen typically has a 30 inch cable terminated with a 1x5 female connector. This is normally converted to a DB9 male bulkhead connector with an adapter cable internal to the display (P/N 899389-000). This adapter has built-in transient protection, and must be connected through a short lead to frame ground. For more information on transient protection, see Touchscreen Connections and the AccuTouch Product Manual.

An additional external cable (P/N 454173-000) connects the bulkhead connector to the DB9 female connector on the controller. See the AccuTouch Product Manual for cabling kits and options.

The following pinouts apply:

AccuTouch Signal
Touchscreen Cable Pin
Controller DB9 Pin
H
1
9
X
2
6
S
3
1
Y
4
7
L
5
8
DuraTouch

The DuraTouch touchscreen typically has a short flexible cable with a 1x4 female connector. This must be converted to a DB9 male connector for connection with the DB9 female connector on the controller.

The following pinouts apply:

DuraTouch Signal
Touchscreen Cable Pin
Controller DB9 Pin
XH
1
6
XL
2
7
YL
3
8
YH
4
9

2500S Serial Controller

Installation

This section assumes you are integrating the 2500S serial controller board into your system as a component.

The following information gives you mounting dimensions, touchscreen connections, power connections and requirements, and data output connections. It is your responsibility to determine how best to mount the controller and data connector in the display or separate enclosure, and provide a power supply.

Mounting the Controller and Connecting Chassis Ground

The mounting dimensions for the 2500S controller are shown in Figure 2-4. Remember that the cable headers will increase the space required.

The mounting holes fit common 0.156-inch plastic snap-in standoffs. A chassis ground connection is required through one of the plated through mounting holes (PTH) or P4 pin 8 to provide adequate shielding for the touchscreen cable. Conductive mounting hardware can provide a chassis ground connection for the controller. Grounding all four mounting holes will give the best Electromagnetic Interface performance.

Connections

Power Connection

The 2500S controller operates on a single voltage, positive with respect to ground. See power requirements.

Connect a power cable harness to P4 on the controller, a 2x5 header with pins on 0.100" centers. Use a ribbon cable with an IDC connector or crimp-to-wire pin receptacles. An acceptable plug can be selected from Molex series 70450, AMP AMPMODU Mod. IV product line, or Berg mini-latch housing with Mini-PV pins. Connect a power supply (such as P/N 742067-000, available separately) to the harness and then to AC. Elo cable P/N 889507-000 may be used which has flying leads for power and ground.

Figure 3-3. P4 Power Connector Pin Positions, End View

P4 Pins

Signal

Function

1

+Pwr

Supply voltage positive

2

PwrCom

Supply voltage negative (tied to pin 4)

3

N/C

4

PwrCom

Supply voltage negative (tied to pin 2)

5

LED Remote

External LED driver

6

Key

7

N/C

8

Chassis

Frame ground connection

9

-Reset

Open collector input: open = normal operation; short to PwrCom = hardware reset.

10

N/C

 

CAUTION

Observe polarity when connecting the power leads to the power supply. Reversing polarity may damage the controller.

 

 

 

Serial Connection

The 2500S controller operates at standard RS232C levels. The serial port connector, P2, is a 2x5 header with pins on 0.100" centers. It is configured so a ribbon cable and commonly available insulation displacement connectors (IDCs) may be used.

Figure 3-4. P2 Serial Connector Pin Positions, End View

P2 Pins

DB25

DB9

Host Signal

1

8

1

DCD (N/C)

2

6

6

DSR

3

3

2

RXD

4

4

7

RTS

5

2

3

TXD

6

5

8

CTS

7

20

4

DTR

8

22

9

RI (N/C)

9

7

5

GND

10

Key

The controller only requires a 2-wire connection, controller Transmit Data (P2 pin 3) and Signal Ground (P2 pin 9). For two-way communications, the controller Receive Data (P2 pin 5) should also be connected to the host Transmit Data pin.

Data Set Ready (DSR) and Clear to Send (CTS) may be used by the host to verify controller connections and operation. DSR is asserted when power is applied to the controller and CTS is asserted when the controller's power-on sequence is complete. Data Terminal Ready (DTR) and Request to Send (RTS) can also be connected for full hardware handshaking.

Note that if the application uses the SmartSet Reset command ('Rx' where x is the type of reset required), CTS should be monitored by the host to detect the completion of the reset. If CTS is not monitored, then the host should delay for approximately 5 seconds after issuing a Reset command.

Elo driver software typically requires two-way communication (unless specifically disabled), and all four handshaking lines.

As the controller is typically installed inside a display, we recommend that you make a cable that connects P2 to a DB9 female connector mounted on the back of the display, or use Elo's serial cable P/N 942741-000. The shell of this connector should be tied to chassis ground. Use an additional DB9 male to DB9 female straight-through cable from the back of the display to your serial port, such as Elo P/N 454173-000.

Elo can provide suitable adapters and cabling. See the IntelliTouch Product Manual for details.

Touchscreen Connection

A multi-conductor cable terminated in a 2x6 female connector is attached to the IntelliTouch touchscreen. The controller is normally placed inside the display with the touchscreen cable connecting directly to the 2x6 header at P3 on the controller (see Figure 2-4).

Unlike the serial cable, the touchscreen cable has a special construction. Use only Elo touchscreen cables and adapters.

Figure 3-5. P3 Touchscreen Connector Pin Positions, End View

Diagnostic LEDs

E271-2210 Controller

The E271-2210 controller has one yellow diagnostic LED. Following power on, the controller performs its self-test. After the self-test, the LED flashes about 1.5 times a second, indicating normal operation.

During normal operation, the LED also indicates controller/host communication is in progress. For example, when the touchscreen is touched, the LED should light or flicker, then return to the normal flash rate. If the host does not remove the packet from the controller, the LED will stay lit.

If the LED stays lit without a touch, the touchscreen or cabling may be shorted. Disconnect the touchscreen cable from the controller and cycle power to the controller to verify this condition.

If the LED flashes about four times a second, a warning error condition is indicated, such as improper communication from the host. Suspect the baud rate or other communication parameters.

E271-2201 Controller

The E271-2201 controller has three diagnostic LEDs. Following power on, the controller performs its self-test. After the self-test, a flashing green LED indicates normal operation (except in Low Power Mode). If a fatal error was encountered, the yellow and red LED's flash an eight-bit error code starting with the most significant bit, where yellow indicates a binary '0' and red a binary '1'.

During normal operation, the yellow LED indicates controller/host communication is in progress. For example, when the touchscreen is touched, the yellow LED should light or flicker (may not be visible with bus controllers on fast PC's). If the host does not remove the packet from the controller, the LED will stay lit.

If the yellow LED lights without a touch, the touchscreen or cabling may be shorted. Disconnect the touchscreen cable from the controller and cycle power to the controller to verify this condition.

A constant red LED indicates a warning error condition, such as improper communication from the host. Suspect the baud rate or other communication parameters.

2500S Controller

The 2500S controller has one green diagnostic LED. Following power on, the controller performs a short self-test, where the LED stays lit. After the self-test, the LED flashes once per second, indicating normal operation.

During normal operation, the LED also indicates controller/host communication is in progress. When the touchscreen is touched, the LED should light continuously, then return to the normal flash rate. If the host does not remove the packet from the controller, the LED will stay lit.

The LED will also stay lit without a touch if the touchscreen or cabling is disconnected or not functioning.

If the LED flashes about two times per second, a warning error condition is indicated, such as improper communication from the host. Suspect an invalid command sequence from the host.

Remote LED Capability

The diagnostic LED drive is connected to pin 5 of the P4 power supply connector. This signal may be used to drive an external indicator such as another LED.

To operate an external LED, connect the LED cathode to ground and the anode to pin 5 of the P4 connector. Nominal current through the LED will be 6 mA so a low-operating current LED should be used. An external resistor is not required.