AGM Electronics, Inc – Spread Spectrum Radio, Series ( ) 5017-1 Manual Rev 2 User Manual Spread Spectrum Radio Modem
1 AGM Spread Spectrum Radio Manual
CONTENTS INTRODUCTION............................................................................................................................................................3 Overview ..................................................................................................................................................................4 Theory of Operation and Construction...............................................................................................................
Introduction Introduction Thank you for purchasing the AGM Spread Spectrum Radio (SSR). The AGM Spread Spectrum Radio modem provides a variety of cost effective data communications possibilities. This manual covers installation and setup of the more commonly used configurations.
Introduction Overview The AGM AUX/DIN 5017-1 SSR is a low cost radio modem using spread spectrum technology, operating in the 900 MHz band. The SSR complies with FCC Part 15 rules and may be operated without licensing. The SSR is intended for short range line of sight communications of up to 20 miles using external high gain antenna. The SSR may be wired either for a RS485 or RS232 system. When used with RS485 the SSR will automatically switch to RS232 for configuration.
Introduction General Specifications Ports – 1 RS232C, 1 RS485 Baud Rate – RS232C/RS485, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bps Status Indicators - 7 Operating Temperature Range, -20/80 deg C Adjustments – Operator configurable locally from a PC Power – 11/26 vdc +/- 10%, nominal 3 Watts @ 12V. Physical – 3 X 1.14 X 3.5 (DIN), 3 X 1.14 X 2.7 (AUX) Frequency – 902 – 928 MHz, Frequency Hopping, Wide band FM modulator.
Hardware Installation Hardware Installation The SSR is available pre-configured to your application. When pre-configured, the SSR is ready for use and you only need to connect your equipment. If not pre-configured or if you need to modify the configuration you will need to connect the SSR to a computer containing a RS232 serial port and terminal emulation program. Hyperterminal is available on any Microsoft Windows 95/98/NT/2000/XP system.
Hardware Installation Power Connection The SSR will operate from either a 12 VDC or 24 VDC supply that is capable of supplying 300 mA. Connect the minus lead of your power supply to pin 2 of the green connector and the positive lead to pin 4 of the green connector. When power is applied the “P/X” light should be on. The “F” light indicates the supply voltage is too low or a failure of the SSR. If neither lights are on or if the “F” light is on check your input voltage.
Hardware Installation Connecting to RS485 devices Connecting a SSR to any device using RS485 is the same regardless of the device connected. To connect one or more RS485 devices you will need a shielded twisted pair cable. 1. Connect one wire of the twisted pair cable to pin 9 or 10 of the green connector. The other end of the wire should be connected to +RS485 on the RS485 device. 2. Connect the other wire of the twisted pair cable to pin 7 or 8 of the green connector.
Hardware Installation Connecting to AGM Integrated Control Station (ICS) To connect a SSR to an ICS you will need a 9 pin male to 25 pin female straight through cable. 1. Plug the 25 pin end of the cable of the RS232 cable into the 25 pin D connector on the back of the ICS. 2. Plug the other end of the RS232 cable into the 9 pin female D connector on top of the SSR. 3. Power up both the ICS and SSR. If properly configured the “2” light should be on and the “4” light should be off.
Hardware Installation Connecting to a 3rd Party PLC The SSR supports any PLC that uses a protocol based on 7 or 8 data bit asynchronous serial communications. This includes ASCII Modbus, RTU Modbus, Allen-Bradley DF1 Half Duplex and DNP3 protocols. You must have the appropriate RS232 or RS485 interface installed. Consult with your PLC manufacture on the RS232 or RS485 interface to use. If using RS485 see the Connecting to RS485 Devices section. The following are instruction for RS232.
Getting Started Getting Started The SSR be preconfigured at the factory. In this case your SSR should be ready to use after you have made all hardware connections. In many cases the default configuration will work. The default configuration is for 9600 bps, 8 data bits, no parity and one stop bit. Networking is set up for Peer-Peer and the hopping channel is 0. For best throughput we recommend you set up your system to match the SSR data rate of 9600 bps.
Configuration Configuration To modify the configuration of a SSR the following will be required: 1. Computer with an available RS232 “COM” port. 2. Terminal Emulator such as Hyper Terminal. 3. Straight through RS232 cable to connect your computer to the SSR. 4. 12 to 24 volt power supply. The SSR typically draws 300 mA when transmitting. 5. The Spread Spectrum Radio (SSR). The following instructions assume you are familiar with your terminal emulator program and how to connect the SSR to your computer.
Configuration Save Changes (WR) Enter “ATWR” to save the changes in the SSR non-volatile memory. On power up the SSR will revert to previously stored settings.
SSR’s as Repeaters SSR’s as Repeaters Store and Forward The modules can be configured as simple “store and forward” repeaters by attaching a hardware loopback (“repeater”) adapter that loops received data back into the module for retransmission. This mode allows the radio to store and forward up to 430 bytes. Usage Guidelines • Three wire RS232 must be enabled. Jumper pins 3 and 5 on screw terminal.
SSR’s as Repeaters • This system works best if either the packets are small or if modules can be configured with retries (ATRR) to overcome any interference the module may cause between them. • Multiple streaming repeaters can be cascaded to extend the reach even further, each leg of the system should use a separate channel. • Data travels through the repeater fastest using this method. May be used to transfer large files.
Technical Support Technical Support AGM Electronics, Inc PO Box 32227 Tucson, AZ 85715 USA Phone: (520) 722-1000 Fax: (520) 722-1045 www.agmelectronics.
Diagnostics and Trouble Shooting Diagnostics and Trouble Shooting Indicator Lights Seven indicator lights are included on the front of a SSR to aid in troubleshooting your SSR installation. Light 4 2 X R F RR P/X Description RS485 Mode RS232 Mode RS232/RS485 Transmit. Light flashes with each character transmitted from the SSR to connected device. RS232/RS485 Receive. Light flashes with each character received from the connected device. Failed.
Diagnostics and Trouble Shooting Diagnostic / Configuration Jumper The SSR contains a diagnostic mode which will allow you to enter the configuration settings regardless of the current configuration. This mode is entered by putting a jumper between pins 1 and 5 on the green connector and cycling the power. When in this mode the SSR will continuously transmit to the RS232 or RS485 connection a count with each number followed by carriage return / line feed.
Appendix A Appendix A FCC Compliance Information FCC ID: OUR9XSTREAM This device complies with 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.
Appendix B Appendix B Wiring and Simplified Diagram AGM Spread Spectrum Radio Manual 20
