Black BOX IC983C-R2 User Manual

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USER MANUAL

IC983C-R2

PCI EXPRESS CARD

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TABLE OF CONTENTS

TECHNICAL SUPPORT

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1. SPECIFICATIONS ...................................................................................................................................................................................... 3

2. OVERVIEW ................................................................................................................................................................................................. 4

2.1 Introduction .......................................................................................................................................................................................................... 4

2.2 Features ............................................................................................................................................................................................................... 4

2.3 What’s Included ................................................................................................................................................................................................... 4

2.4 Additional Items You May Need ......................................................................................................................................................................... 5

2.5 Hardware Description ......................................................................................................................................................................................... 6

3. CARD SE TUP ............................................................................................................................................................................................. 7

3.1 Address and IRQ Selection ................................................................................................................................................................................. 7

3.2 Clock Modes and Baud Rates ............................................................................................................................................................................ 7

3.3 Electrical Interface Selection via Hardware...................................................................................................................................................... 7

3.4 RS-485 Enable Modes ........................................................................................................................................................................................ 7

3.5 Line Termination Selection via Hardware ......................................................................................................................................................... 8

3.6 Electrical Interface, Line Termination, and Echo Selection via Software ....................................................................................................... 9

3.7 Slew Rate Limiting ............................................................................................................................................................................................. 10

3.8 RS-485 Auto-Enable Delay ............................................................................................................................................................................... 10

3.9 On-Board LED Signal Indicators ....................................................................................................................................................................... 10

4. SOFTWARE INSTALLATION .................................................................................................................................................................. 11

4.1 Where to Get the Software ................................................................................................................................................................................11

4.2 Windows Installation .........................................................................................................................................................................................11

4.3 Upgrading to the Current Driver ....................................................................................................................................................................... 12

4.4 Linux Support .................................................................................................................................................................................................... 12

5. HARDWARE INSTALLATION .................................................................................................................................................................. 13

5.1 Verifying Installation ......................................................................................................................................................................................... 13

5.2 Uninstall Instructions ........................................................................................................................................................................................ 13

5.3 Remove Hardware Using Device Manager ...................................................................................................................................................... 13

6. TECHNICAL DESCRIPTION ................................................................................................................................................................... 14

6.1 DB25 Male Connector Pin Assignments ......................................................................................................................................................... 14

6.2 DB9 Male Connector Pin Assignments ........................................................................................................................................................... 15

APPENDIX A: TROUBLESHOOTING .......................................................................................................................................................... 16

APPENDIX B: HANDLING INSTRUCTIONS .............................................................................................................................................. 21

APPENDIX C: ELECTRICAL INTERFACE ................................................................................................................................................... 22

C.1 RS-232 ................................................................................................................................................................................................................ 22

C.2 RS-422 ............................................................................................................................................................................................................... 22

C.3 RS-485 ............................................................................................................................................................................................................... 22

APPENDIX D. ASYNCHRONOUS COMMUNICATIONS ............................................................................................................................ 23

APPENDIX E. GROUND LOOP PHENOMENON ......................................................................................................................................... 24

E.1 What is Ground Loop? ....................................................................................................................................................................................... 24

E.2 Cabling Recommendations .............................................................................................................................................................................. 24

APPENDIX F. MECHANICAL DRAWING .................................................................................................................................................... 25

APPENDIX G. REGULATORY INFORMATION ........................................................................................................................................... 26

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CHAPTER 1: SPECIFICATIONS

TABLE 1-1. SPECIFICATIONS

SPECIFICATION DESCRIPTION

Connectors

Material Solder mask over bare copper or solder mask over tin nickel

MTBF 1,300,000 hours at 77° F (25° C) ambient

Temperature Tolerance

Relative Humidity

Rating 94V0

Power Consumption 3 W

Supply Voltage +3.3 VDC

Rating 300 mA

On PCI card: (1) DB25 male;

On 36" (91 cm) cable: (1) DB25 female, (2) DB9M

Operating: 32 to 158° F (0 to 70° C);

Storage: -58 to +221°F (-50 to 105° C)

Operating: 10 to 90%, noncondensing

Storage: 10 to 90%, noncondensing

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CHAPTER 2: OVERVIEW

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2.1 INTRODUCTION

The PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2) is a PCI Express 2.0 Gen 1 compliant interface adapter with two field-selectable RS-232/422/485 asynchronous serial ports supporting data rates exceeding 1 Mbps for industrial automation and control applications.

Configure the serial ports as RS- 232 for standard serial COM port requirements. Choose the RS-422 mode for long-distance device connections up to 4000 ft. (1250 m) where noise immunity and high data integrity are essential. Select RS-485 and capture data from multiple peripherals in an RS 485 multi-drop network. Up to 31 RS-485 compliant devices can be connected to each port to automate your data collection. You can even mix the ports in any of the electrical interface combinations to provide maximum flexibility in your application.

Using Windows, in RS-485 mode the transmitter is automatically enabled in hardware, eliminating the need for application software control. This allows the IC983C-R2 to be used with standard serial communications applications and removes the risk of bus contention and data corruption. In RS-232 mode, all modem control signals are implemented for maximum compatibility with a wide range of serial peripherals. The driver for Windows software and utilities make installation and operation easy in Windows 7/8.1/10.

sThe IC983C-R2 ships with a Low Profile PCIe bracket that will only work in a Low Profile PCIe slot. The product is RoHS compliant and meets the requirements of the RoHS (2011/65/EU) directive.

2.2 FEATURES

 Two serial ports configurable for RS-232/422/485.

 On-board DIP switch configuration with Windows device driver override.

 Ultra High-speed UART with 256-byte TX and RX FIFOs.

 Asynchronous data rates exceed 1 Mbps.

 Automatic RS-485 enable/disable for Windows applications.

 Windows driver selectable 250K slew rate limiting minimizes electromagnetic interference.

 Includes a 36” (91 cm) cable terminates with two DB9M connectors.

2.3 WHAT’S INCLUDED

The IC983C-R2 is shipped with the following items. If any of these items are missing or damaged, contact Black Box Technical Support at 877-877-2269 or info@blackbox.com.

 PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2 )

 (1) 36” (91 cm) DB25F to (2) DB9M Cable

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2.4 ADDITIONAL ITEMS YOU MAY NEED

Depending upon your application, you are likely to find one or more of the following items useful with the IC983C-R2. All items can be purchased from Black Box.

 DB9 to DB25 Serial Cable (part number BC03000-0006-MF): This cable is a standard AT-style RS-232 modem cable with a DB9 female

connector on one end and a DB25 male connector on the other end. Simply connect the DB9F connector to the DB9 serial port on your computer or host, and then connect the DB25M connector to your RS-232 serial modem or other compatible RS-232 serial device. The 6-foot (1.8-m) cable is fully shielded with dual thumbscrews at each connector. The molded connectors integrate strain relief to prevent damage to the cable or connectors. All DB9 modem control signals are implemented and the cable is pinned to EIA-232 standards.

 DB9 Serial Extension Cable (part number BC00200): This cable is a standard DB9F to DB9M serial extension cable. Extend a DB9 cable

or locate a piece of hardware where it is needed with this 6-foot (72-inch) cable. The connectors are pinned one-to-one so the cable is compatible with any device or cable with DB9 connectors. The cable is fully shielded against interference and the connectors are molded to provide strain relief. Dual metal thumbscrews secure the cable connections and prevent accidental disconnection.

 Terminal Block Kit (IC981): This terminal block kit breaks out a DB9 connector to 9 screw terminals to simplify field wiring

of serial connections. It is ideal for RS-422 and RS-485 networks, yet it will work with any DB9 serial connection, including RS-232. The terminal block kit includes one DB9 terminal block (part number IC981) and one extension cable (part number BC00200). The terminal block includes holes for board or panel mounting. The terminal block can connect directly to DB9 serial cards or any cable

with a DB9M connector.

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CHAPTER 2: OVERVIEW

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2.5 HARDWARE DESCRIPTION

Figure 2-1 shows the PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2). Table 2-1 describes its components.

DIP

SWITCHES

DB25 MALE

CONNECTOR

DB25 FEMA LE

CONNECTOR

FIGURE 2-1. PCI EXPRESS CARD

DB9 MALE

CONNECTOR

DB9 MALE

CONNECTOR

TABLE 2-1. COMPONENTS IN FIGURE 1-1

COMPONENT DESCRIPTION

DB25 male serial connector on the adapter card Connects to DB25 female serial connector on the cable

DIP switch 1

DIP switch 2

NOTE: A DB25F to (2) DB9M cable (included) connects to the serial card’s DB25M connector via the cable’s DB25F connector and to (2) serial devices via the cable’s (2) DB9M connectors.

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CHAPTER 3: CARD SETUP

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3.1 ADDRESS AND IRQ SELECTION

The IC983C-R2 is automatically assigned memory addresses and IRQs by your motherboard BIOS or by a “plug-n-play” operating system. Adding or removing other hardware or moving the adapter to another slot may change the assignment of memory addresses and IRQs.

3.2 CLOCK MODES AND BAUD RATES

The IC983C-R2 derives a 125-MHz clock from the PCI express link for the Baud Rate Generator (BRG) which is divided by a clock prescaler (1 or 4) and a 16-bit clock divisor to obtain a sampling clock of 16X, 8X, or 4X the serial data rate. The BRG offers a wide range of possible baud rates. Under Windows and Linux, the best choice of divisor is made automatically by the driver. The bit rate error is within the +/– 2% recommended tolerance for proper serial communication.

3.3 ELECTRICAL INTERFACE SELECTION VIA HARDWARE

Each serial port on the IC983C-R2 has the ability to be used as RS-232, RS-422, or RS-485. Port 1 is selectable via DIP-switch SW2 configuration, and Port 2 is selectable via DIP-switch SW1 configuration. Use the following examples to configure your adapter.

TABLE 3-1. MODE SELECTION VIA HARDWARE (DIP SWITCHES)

M1 SWITCH M0 SWITCH MODE

Off Off RS-232

Off On RS-422 (default)

On Off RS-485 with echo

On On RS-485 without echo

3.4 RS-485 ENABLE MODES

RS-485 is ideal for multi-drop or network environments. RS-485 requires a tri-state driver that will allow the electrical presence of the driver to be removed from the line. The driver is in a tri-state or high-impedance condition when this occurs. Only one driver may be active at a time and the other driver(s) must be tri-stated.

The RS-485 driver of each IC983C-R2 port enters and leaves tri-state together with the changes to its output modem control signal Data Terminal Ready (DTR).

Under Windows, configuring an IC983C-R2 port to RS-485 configures the port to automatically assert its DTR output at the start of each transmission. This causes the RS-485 data transmission driver to leave tri-state, allowing it to transmit signals. In RS-485 mode under Windows, the port is also set to automatically de-assert its DTR at the end of each transmission. This returns the RS-485 data transmission driver to tri-state so that other drivers can transmit on the line.

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3.5 LINE TERMINATION SELECTION VIA HARDWARE

Typically, the device at each end of the RS-485 bus must have line-terminating resistors (RS-422 terminates at the receive end only). When the end device is a IC983C-R2 port, the board DIP switches can be used to connect a built in 120-ohm resistor between each RS-422/485 input pair in addition to a 510-ohm pull-up/pull-down combination that biases the RX+ and RX– receiver inputs. DIP switches SW2 (Port 1) and SW1 (Port 2) allow the user to customize each port individually to their specific requirements. If multiple IC983C-R2 ports are configured in a RS-485 network, only the ports at each end should have switches T, PU, and PD ON.

If you are using the board in an RS-485 two-wire network, enable the two switches labeled “L,” which electrically connect the TX– and RX– pins together and the TX+ and RX+ pins together.

TABLE 3-2. DIP SWITCH SETTINGS

SWITCH DEFAULT SELECTION IF ON

T On Enables RS-422/RS-485 120 ohm termination between RX+ and RX– and between CTS+ and CTS–

PU On Enables RS-422/RS-485 RX+ 510 ohm pull-up to 3.3V (biasing)

PD On Enables RS-422/RS-485RX– 510 ohm pull-down to GND (biasing)

L Off Enables RS-485 two-wire mode, connecting TX– to RX–

L Off Enables RS-485 two-wire mode, connecting TX+ to RX+

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3.6 ELECTRICAL INTERFACE, LINE TERMINATION, AND ECHO SELECTION VIA SOFTWARE

When an IC983C-R2 has been installed under Windows, the DIP switch configuration can be overridden by software settings via the Port Settings tab in Device Manager. Changing one port to be overridden by software will automatically change the other port to also be software overridden. The initial software override configuration of each port is adopted from its DIP switch configuration. Both COM ports of the IC983C-R2 should be closed by applications when the software override option is changed in Port Settings.

FIGURE 3-1. PORT SE TTINGS SCREEN

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3.7 SLEW R AT E LIM ITI N G

Slew Rate Limiting (250 kbps) is an additional configuration setting available only via software selection. It helps minimize the generation of electromagnetic interference in applications where higher baud rates are not required.

3.8 RS-485 AUTO-ENABLE DELAY

RS-485 Auto-Enable Delay is an additional configuration setting available only via software selection. It provides an ability to select a 0 to 15 bit-time delay that is inserted after the end of the last stop-bit of the last transmitted character. This delay controls when to automatically disable the RS-485 transmitter. This delay may be useful in long-cable networks.

3.9 ON-BOARD LED SIGNAL INDICATORS

TABLE 3-3. LED INDICATORS

DRIVER D1 D2 D3 D4

Loaded Heartbeat (1 sec on/off) M1 M0 T

Not Loaded Heartbeat Heartbeat Heartbeat Heartbeat

 If the driver is not loaded, all four (4) LEDs flash with the heartbeat signal and the serial port remains in tri-state mode until the driver

loads.

 If the driver is loaded, the LEDs reflect the current Port 1 mode and termination state in accordance with the table above, whether

the states have been set by DIP switch SW2 or software control.

 M1 and M0 are lit if the DIP switch is OFF.

 T is lit if the DIP switch is ON meaning termination is enabled.

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CHAPTER 4: SOFTWARE INSTALLATION

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This section contains helpful information pertaining to the installation of supported software packages. First, we discuss how to get the software. Next, we describe how to install the software via a step-by-step guide for Windows and Linux operating systems.

4.1 WHERE TO GET THE SOFTWARE

You can download the current versions of the software packages from blackbox.com. If you already have the software, go to the Windows or Linux installation section.

4.2 WINDOWS INSTALLATION

CAUTION: Do not connect the hardware until the software has been successfully installed.

NOTE: To install the software, you must log in as an administrator or have administrator privileges.

1. Download the current driver using the instructions from the Where to Get Software section above. Note the destination directory for download.

2. Click on the installer executable from the directory where it was downloaded.

3. When the ”InstallShield Wizard“ window appears, click the “Next” button to initiate the software installation.

4. When the “License Agreement” window appears, accept the terms and click “Next” to continue. You can click the “Print” button to print out a copy of the agreement for your records. If you do not accept the terms of the agreement, the wizard will stop.

5. When the “Ready to Install the Program” window appears, click the “Install” button to install the software onto the hard drive of your computer. Some versions of Windows will halt the installation and provide you with a dialog box that will ask you for permission for the installer to make changes to your computer. Click on the button to continue installation of your software.

6. If prompted, reboot your computer for changes to take effect.

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4.3 UPGRADING TO THE CURRENT DRIVER

1. Download the current driver using the instructions from the Where to Get Software, Section 4.1. Note the destination directory for download.

2. Follow the instructions in Section 5.3 of this manual, Remove Hardware Using Device Manager.

3. Launch the installer executable from the directory where it was downloaded.

4. When the ”InstallShield Wizard“ window appears, click the “Next” button to initiate the software installation.

5. When the “License Agreement” window appears, accept the terms and click “Next” to continue. You can click the “Print” button to print out a copy of the agreement for your records. If you do not accept the terms of the agreement, the wizard will stop.

6. When the “Ready to Install the Program” window appears, click the “Install” button to install the software onto the hard drive of your computer. Some versions of Windows will halt the installation and provide you with a dialog box that will ask you for permission for the installer to make changes to your computer. Click on the button to continue installation of your software.

7. If prompted, reboot your computer for changes to take effect.

4.4 LINUX SUPPORT

The IC983C-R2 is supported natively in Linux kernels 3.7.0-rc6 and later.

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CHAPTER 5: HARDWARE INSTALLATION

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CAUTION: Do not install the PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2 ) until the software has been successfully installed.

Once you have installed the software, install the IC983C-R2 into an available PCI Express slot and boot the computer. The drivers that were installed during the software installation process will automatically be used to configure the adapter.

NOTE: Once the hardware installation completes, you may need to restart the computer to finalize the installation process.

5.1 VERIFYING INSTALLATION

To confirm that the serial port has been successfully installed, look in Device Manager under “Ports (COM &LPT).” In parentheses, there should be a COM number assigned to each port number.

NOTE: Your system will assign the next available COM number, which will vary by computer (COM7 and COM8 are shown in this example).

5.2 UNINSTALL INSTRUCTIONS

The software program adds entries to the system registry that are necessary for specifying the operating parameters for your device. To completely remove the hardware and associated software, follow the steps in the order they appear.

IMPORTANT! Start with the hardware installed in a PCI Express slot. Do not remove the PCI card until instructed to do so.

5.3 REMOVE HARDWARE USING DEVICE MANAGER

To access Device Manager, follow the steps below:

1. Open Windows Explorer.

2. Right click on the “Computer” or “My Computer” icon.

3. Click “Manage” in the fly-out menu to launch the “Computer Management” console window.

4. In the left pane under “System Tools,” click “Device Manager.”

5. In the right pane, expand the “Multi-port serial adapters” section by double-clicking it.

6. Locate the PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2) device in the listing.

7. Right-click on the entry for the PCI Express Card - Async, RS-232/422/485, Serial 2-Port (IC983C-R2) device and click “Uninstall.”

8. Confirm that you want to uninstall the device by clicking the “OK” button. This will remove the hardware, COM ports, and all registry entries from your computer. Keep the device connected.

9. The window will refresh and the entry for the device will no longer appear. Proceed with removing the software via Windows Control Panel.

If you want to completely remove the hardware and software from your computer, power down your computer, remove the device from the PCI Express slot, and then reboot your computer to complete the uninstallation.

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CHAPTER 6: TECHNICAL DESCRIPTION

TECHNICAL SUPPORT

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The IC983C-R2 is a PCIe interface adapter with two (2) asynchronous serial ports providing versatile, field-selectable RS-232 interfaces for modems, printers, and plotters, as well as RS-422/485 interfaces for industrial automation and control applications.

The IC983C-R2 has UARTs with 256 byte TX and RX FIFOs, programmable baud rates, data format, and interrupt control.

6.1 DB25 MALE CONNECTOR PIN ASSIGNMENTS

The IC983C-R2 includes a DB25 male connector for attaching the included cable.

TABLE 6-1. DB25 MALE CONNECTOR PIN ASSIGNMENTS

PIN NUMBER RS-232 RS- 42 2/485 PIN NUMBER RS -232 RS- 42 2/485

1 Port 1 RD (I) Port 1 RX– (I) 14 Port 2 TD (O) Port 2 TX– (O)

2 Port 1 CTS (I) Port 1 CTS– (I) 15 Port 2 RTS (O) Port 2 RTS– (O)

3 Port 1 DCD (I) Port 1 RX+ (I) 16 Port 2 DSR (I) Port 2 RTS+ (O)

4 Port 1 TD (O) Port 1 TX– (O) 17 Port 2 DTR (O) Port 2 TX+ (O)

5 Port 1 RTS (O) Port 1 RTS– (O) 18 Port 2 RI (I) Port 2 CTS+ (I)

6 Port 1 DSR (I) Port 1 RTS+ (O) 19 N/C N/C

7 Port 1 DTR (O) Port 1 TX+ (O) 20 N/C N/C

8 Port 1 RI (I) Port 1 CTS+ (I) 21 N/C N/C

9 GND GND 22 N/C N/C

10 GND GND 23 N/C N/C

11 Port 2 RD (I) Port 2 RX– (I) 24 N/C N/C

12 Port 2 CTS (I) Port 2 CTS– (I) 25 N/C N/C

13 Port 2 DCD (I) Port 2 RX+ (I) — — —

“N/C” = Not Connected (unused)

“–” = Reserved

(I) = Input

(O) = Output

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CHAPTER 6: TECHNICAL DESCRIPTION

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6.2 DB9 MALE CABLE PIN ASSIGNMENTS

The IC983C-R2 includes a cable with a DB25 female connector terminating to a pair of DB9 male connectors. The DB25F connector on the cable plugs into the DB25M connector on the board. The DB9M connectors are compatible with a variety of serial peripherals. Their RS-232 pin assignment meets EIA/TIA/ANSI-574 DTE specifications for DB9 type connectors.

TABLE 6-2. DB9 MALE CONNECTOR PIN ASSIGNMENTS

PIN NUMBER R S-232 RS- 42 2/485

1 DCD (I) RX+ (I)

2 RD (I) RX– (I)

3 TD (O) TX– (O)

4 DTR (O) TX+ (O)

5 GND GND

6 DSR (I) RTS+ (O)

7 RTS (O) RTS– (O)

8 CTS (I) CTS– (I)

9 RI (I) CTS+ (I)

(I) = Input

(O) = Output

NOTE: Terminate any unused control signals. The most common way to do this in RS-232 mode is to connect RTS to CTS and RI. Also, connect DTR to DCD and DSR. In RS-422/485 mode, connect RTS+ to CTS+ and RTS– to CTS–. Terminating these pins, if not used, will help ensure the best performance from the adapter.

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APPENDIX A: TROUBLESHOOTING

Once you have confirmed that the serial adapter COM ports are listed in Device Manager, use the WinSSD utility to verify communications. Detailed help is included in the WinSSD utility.

Set the adapter’s electrical Interface for either RS-232 or RS-422.

If you have a loopback plug, put it on the adapter connector. If you do not have a loopback plug, you can use female jumper wires to make the connection to verify the functionality.

RS-232 requires pins 2 (Receive) & 3 (Transmit) to be jumpered as shown in the diagram below.

TECHNICAL SUPPORT

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FIGURE A-1. RS-232 JUMPERED PINS

NOTE: If you do not have a loopback plug or jumper wires handy, you can use a metal device such as a knife, screwdriver, key, or paperclip to short pins two and three.

RS-422 requires pins 1 & 4 (Receive + and Transmit +) and also pins 2 & 3 (Receive - and Transmit -) to be jumpered as shown in the diagram below.

FIGURE A-2. RS-422 JUMPERED PINS

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APPENDIX A: TROUBLESHOOTING

To test communications, launch the WinSSD utility in the “Start” menu.

On the “Port Information” tab, select the associated COM port and click the “Open” button.

This will first open the COM port. From this tab, the port can also be closed (see image below). Click the “Settings” button to open the COM Port Properties dialog box. This will allow the Port Settings to be altered.

TECHNICAL SUPPORT

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FIGURE A-3. PORT INFORMATION SCREEN

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APPENDIX A: TROUBLESHOOTING

Change your parameters to 9600 bits per second, 8 data bits, no parity, 1 stop bit, and no flow control, as shown below.

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Click “Apply” and “OK.”

FIGURE A-4. COM PORT SET TINGS SCREEN

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APPENDIX A: TROUBLESHOOTING

In the main WinSSD window, click on the “BERT” tab (Bit Error Rate test).

Click on the “Start” button.

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FIGURE A-5. BIT-ERROR R ATE TEST (BERT) TAB

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APPENDIX A: TROUBLESHOOTING

If the COM port is properly working, the Sync Status green light will glow and the Transmit Frames and Receive Frames will increase. The Tx and Rx Data Rates will show the calculated data rate.

TECHNICAL SUPPORT

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FIGURE A-6. CALCUL ATED DATA RATE SHOWN ON SCREEN

This verifies that the adapter is working properly. You can continue testing this port with different configurations or proceed with testing other ports, if necessary.

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APPENDIX B: HANDLING INSTRUCTIONS

TECHNICAL SUPPORT

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ESD WARNINGS

ELECTROSTATIC DISCHARGES (ESD)

A sudden electrostatic discharge can destroy sensitive components. Proper packaging and grounding rules must therefore be observed. Always take the following precautions:

1. Transport boards and cards in electrostatically secure containers or bags.

2. Keep electrostatically sensitive components in their containers, until they arrive at an electrostatically protected workplace.

3. Only touch electrostatically sensitive components when you are properly grounded.

4. Store electrostatically sensitive components in protective packaging or on anti-static mats.

GROUNDING METHODS

The following measures help to avoid electrostatic damages to the device:

5. Cover workstations with approved antistatic material. Always wear a wrist strap connected to a properly grounded workplace.

6. Use antistatic mats, heel straps, and/or air ionizers for more protection.

7. Always handle electrostatically sensitive components by their edge or by their casing.

8. Avoid contact with pins, leads, or circuitry.

9. Turn off power and input signals before inserting and removing connectors or connecting test equipment.

10. Keep your work area free of non-conductive materials, such as ordinary plastic assembly aids and Styrofoam.

11. Use field service tools such as cutters, screwdrivers, and vacuum cleaners that are conductive.

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APPENDIX C: ELECTRICAL INTERFACE

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C.1 R S -2 32

The RS-232 implementation has been defined and revised several times and is often referred to as RS-232-C/D/E or EIA/TIA-232C/D/E. It is defined as “Interface between Data Terminal Equipment and Data Circuit- Terminating Equipment Employing Serial Binary Data Interchange.” The mechanical implementation of RS-232 is on a 25-pin D sub connector. The IBM PC computer defined the RS-232 port on a 9 pin D sub connector and subsequently the EIA/TIA approved this implementation as the EIA/TIA-574 standard. This standard has defined as the “9-Position Non-Synchronous Interface between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange”. Both implementations are in wide spread use and will be referred to as RS-232 in this document. RS-232 is capable of operating at data rates up to 20K bps / 50 ft. The absolute maximum data rate may vary due to line conditions and cable lengths. RS-232 often operates at 38.4K bps over very short distances. The voltage levels defined by RS-232 range from -12 to +12 volts. RS-232 is a single ended or unbalanced interface, meaning that a single electrical signal is compared to a common signal (ground) to determine binary logic states. A voltage of +12 volts (usually +3

to +10 volts) represents a binary 0 (space) and -12 volts (-3to-10 volts) denote a binary 1 (mark). The RS-232 and the EIA/TIA-574

specification define two types of interface circuits Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). The Sealevel Systems Adapter is a DTE interface.

C.2 RS-422

The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits. RS-422 is a differential interface that defines voltage levels and driver/receiver electrical specifications. On a differential interface, logic levels are defined by the difference in voltage between a pair of outputs or inputs. In contrast, a single ended interface, for example RS-232, defines the logic levels as the difference in voltage between a single signal and a common ground connection. Differential interfaces are typically more immune to noise or voltage spikes that may occur on the communication lines. Differential interfaces also have greater drive capabilities that allow for longer cable lengths. RS-422 is rated up to 10 Megabits per second and can have cabling 4000 feet long. RS-422 also defines driver and receiver electrical characteristics that will allow 1 driver and up to 32 receivers on the line at once. RS-422 signal levels range from 0 to +5 volts. RS-422 does not define a physical connector.

C.3 RS-485

RS-485 is backwardly compatible with RS-422; however, it is optimized for party line or multi-drop applications. The output of the RS-422/485 driver is capable of being Active (enabled) or Tri-State (disabled). This capability allows multiple ports to be connected in a multi-drop bus and selectively polled. RS-485 allows cable lengths up to 4000 feet and data rates up to 10 Megabits per second. The signal levels for RS-485 are the same as those defined by RS-422. RS-485 has electrical characteristics that allow for 32 drivers and 32 receivers to be connected to one line. This interface is ideal for multi-drop or network environments. RS-485 tri-state driver (not dual-state) will allow the electrical presence of the driver to be removed from the line. Only one driver may be active at a time and the other driver(s) must be tri-stated. RS-485 can be cabled in two ways, two wire and four wire mode. Twowire mode does not allow for full duplex communication, and requires that data be transferred in only one direction at a time. For half-duplex operation, the two transmit pins should be connected to the two receive pins (Tx+ to Rx+ and Tx- to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not define a connector pin-out or a set of modem control signals. RS-485 does not define a physical connector.

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APPENDIX D: ASYNCHRONOUS COMMUNICATIONS

TECHNICAL SUPPORT

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Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking, and character framing (start/stop bits) are pre-defined and must correspond at both the transmitting and receiving ends.

Asynchronous communications is the standard means of serial data communication for PC compatibles and PS/2 computers. The original PC was equipped with a communication or COM: port that was designed around an 8250 Universal Asynchronous Receiver Transmitter (UART). This device allows asynchronous serial data to be transferred through a simple and straightforward programming interface. A starting bit followed by a pre-defined number of data bits (5, 6, 7, or 8) defines character boundaries for asynchronous communications. The end of the character is defined by the transmission of a pre-defined number of stop bits (usually 1, 1.5 or 2). An extra bit used for error detection is often appended before the stop bits.

Idle st ate

of line

Odd, Even, or Unused

5 to 8 data bi ts

P BIT

STOP

FIGURE D-1. ASYNCHRONOUS COMMUNICATIONS BIT DIAGRAM

Remain idle on

next s tart bit

1.5

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APPENDIX E: GROUND LOOP PHENOMENON

TECHNICAL SUPPORT

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E.1 WHAT IS GROUND LOOP?

Ground loop Phenomenon occurs when two (or more) pieces of equipment are connected together with a common ground and a different ground potential exists at each location. This current can cause the connected equipment to experience noise that in turn causes data transmission errors. In the extreme this ground current can cause equipment malfunction or even destruction.

E.2 CABLING RECOMMENDATIONS

When connecting the IC983C-R2 in a RS-485 network, make sure that both ends of the network are not isolated from ground (see Figure E-1). This “floating” ground condition could cause the capacitive or inductive coupling of voltages that will cause a break down in the DC to DC converter circuit or in the opto-isolator circuit. This condition will cause data errors and possibly destroy the receiver circuit.

Isolation

barrier

Isolated adapter

FIGURE E-1. GROUND LOOP

DATA+

DATA -

Ground

Non-isolated

adapter

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APPENDIX F: MECHANICAL DRAWING

6.022

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2.713

2.536

2.211

FIGURE F-1. IC983C-R2 DIMENSIONS.

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APPENDIX G: REGULATORY INFORMATION

TECHNICAL SUPPORT

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FCC STATEMENT

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

EUROPEAN COMMUNITY

This equipment has been evaluated or tested and found in compliance with the requirements of the following directives issued by the European Commission:

 EMC Directive 2014/30/EU

 RoHS Directive 2011/65/EU

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APPENDIX G: REGULATORY INFORMATION

TECHNICAL SUPPORT

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NOM STATEMENT

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc.

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u

otros aparatos (incluyendo amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o

como se indique en el aparato.

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados

sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de venti-

lación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u B: Objectos han caído o líquido ha sido derramado dentro del aparato; o C: El aparato ha sido expuesto a la lluvia; o D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o E: El aparato ha sido tirado o su cubierta ha sido dañada.

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APPENDIX G: REGULATORY INFORMATION

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________________________________________________________________________________________________ __

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NOTES

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__________________________________________________________________________________________________

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NOTES

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__________________________________________________________________________________________________

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Black BOX IC983C-R2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual