Hardware Reference Manual Digi One EM 90000278_B
Digi International Inc. 2002. All Rights Reserved The Digi logo is a registered trademark of Digi International, Inc. Connectware and Digi One are trademarks of Digi International, Inc. Information in this document is subject to change without notice and does not represent a commitment on the part of Digi International.
Contents Chapter 1 Introduction 5 About This Guide.............................................................................5 Introducing the Digi One EM ..........................................................6 Support Information.........................................................................7 Chapter 2 About the Digi One EM 8 Digi One EM Drawing.....................................................................8 Connectors: Power and Serial Interface (P4)...........................
Chapter 4 Sample Application: TTL Signals to EIA-232 Appendix A Digi One EM Specifications 19 20 Network Interfaces.........................................................................20 Serial Interface ...............................................................................20 Data Rates (bps).............................................................................20 Modem Control..............................................................................20 Flow Control Options .......
Chapter 1 Introduction About This Guide Purpose The purpose of this guide is to enable developers to integrate the Digi One EM into other devices, enabling these devices to make use of the Digi One EM’s rich networking features. Audience This document is written for developers tasked with integrating Digi One EM device servers into other devices. Scope This document provides the information required for electrical integration of the Digi One EM into another device.
Introducing the Digi One EM Product Overview The Digi One EM is part of the Digi One Family of single port device servers that provide simple, reliable and cost-effective network connections for serial devices. The Digi One EM provides fully transparent serial device connectivity over industry-standard Ethernet connections and allows both equipment manufacturers and systems integrators to network-enable products at a fraction of the time and cost required to develop a custom solution.
Support Information To get help with a question or technical problem or to make comments and recommendations about our products or documentation, use the following contact information. General Digi International 11001 Bren Road East Minnetonka, MN 55343 U.S.A www.digi.com Customer Service and Support United States: 1 877-912-3444 Other Locations: 1 952-912-3444 www.support.digi.
Chapter 2 About the Digi One EM Digi One EM Drawing The following figure shows the Digi One EM layout and dimensions.
Connectors: Power and Serial Interface (P4) The Digi One EM has a single 12-pin, serial interface port (labeled P4) that supports EIA-232 (TTL levels only), data rates up to 230 Kbps and full-modem control. The following figure helps you locate pins, and the table helps you identify which signal uses each pin.
Connectors: Ethernet Interface (P1) The Digi One EM Ethernet connector is an eight-wire, RJ-45 jack meeting the requirements of ISO 8877 for 10/100BaseT. The following figure helps you locate pins and the table helps you identify which signal uses each pin.
Reset Switch The reset switch, located between P3 and CR1, does the following (depending on how long you hold the switch down): • It reboots the Digi One EM if you press and release the switch immediately. • It reboots the Digi One EM and restores the configuration to factory defaults. (Press and hold the switch down for about 20 seconds while powering the Digi One EM up.) LEDs Digi One EM LEDs provide information on port activity, diagnostics, and Ethernet activity.
LED Color Function Interpretation • • Bottom left Red Diagnostics • Blinking 1-1-1 means starting the operating system. Blinking 1-5-1 means configuration has been returned to factory defaults. Steady blinking means the device is seeking an IP address from a DHCP server. Note: If other blinking patterns occur, call Digi Technical Support.
Chapter 3 About the Development Board Overview The development board provides the following interfaces: • A DB-9 serial interface that enables serial connections from your device to the Digi One EM module. See "DB-9 Serial Interface (P1)" on page 15. • A 12-position socket to supply both power and ground to the Digi One EM. • A reset switch to reboot the Digi One EM. See "Reset Switch (SW1)" on page 16. • A standard 2.0 mm jack that accepts 5 volts DC +/- 5% from a regulated power supply.
Development Board Illustration 14 Digi One EM Hardware Reference
DB-9 Serial Interface (P1) The following figure helps you locate specific DB-9 pins and the table maps signals to pins.
Reset Switch (SW1) The reset switch reboots the Digi One EM.
Power Jack (P7) The power jack accepts 5 volts DC +/- 5% from a regulated power supply. The development board is polarity sensitive. The +5 volts is assumed to be the center contact on connector, and the ground is the outside of the connector barrel, as shown in the following figure.
LEDs (CR4 - CR11) The LED labeled CR4 is a power indicator. The other seven LEDs display EIA-232 signal activity. The following table describes the specific signal associated with each LED.
RESERVED HEADER GND P5 1 2 1 2 3 GND GND RESET SWITCH SW1 3 4 P6 2 4 6 8 10 12 SOCKET 2X6 1 3 5 7 9 11 DIGI ONE EM CONNECTOR +5V 0.1uF 2 2 C6 1 0.1uF C4 1 GND 25 24 ADM211E 2 3 1 28 9 4 27 23 18 17 13 7 6 20 21 8 5 26 22 19 15 16 12 14 U1 RS-232 LINE RECVR 5RX 4TX 2 1 GND C5 +5V 0.1uF C3 0.
Appendix A D i g i O n e E M S p e c i f i c a t i o n s Network Interfaces • RJ-45 connector • 10/100Base-T • Half- and full-duplex support Serial Interface One TTL EIA-232 serial interface Data Rates (bps) 110, 134, 150, 200, 300, 600, 1200, 2400, 3600, 4800, 9600, 19200, 38400, 57600, 115200, 230400 Modem Control DTR, DSR, DCD Flow Control Options RTS/CTS, DTR/DSR, XON/XOFF, None Environmental • Operating Temperature: 50 0F to 131 0F (10 0C to 55 0C) • Humidity: 5% to 90% • Altitude: 12,000 feet (3657.
Appendix B D i g i O n e E M C e r t i f i c a t i o n s This product complies with the following standards: FCC Part 15 Class A Radio Frequency Interference (RFI) (FCC 15.105) This equipment has been tested and found to comply with the limits for Class A digital devices pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential environment.
Modifications (FCC 15.21) Changes or modifications to this equipment not expressly approved by Digi may void the user’s authority to operate this equipment. ICES 003 Class A This Class A digital apparatus meets the requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la Classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. Product Safety • UL 60950 • EN60950 • CSA 22.2 No.
Digi One EM Hardware Reference
Digi One EM Hardware Reference
