CASCADE MODEM Version : 2.00 Release : 2/14/2007 Manual Revision 2.01 Release: 09/18/2012 Diamond Traffic Products, Inc. P.O. Box 1455 76433 Alder Street Oakridge, OR 97463 Phone Fax Email Web : (541)-782-3903 : (541)-782-2053 : sales@diamondtraffic.com : www.diamondtraffic.
Table of Contents 1. Introduction ................................................................................................... 3 1.1 QuickStart Information ..................................................................................................... 3 1.2 Features ........................................................................................................................... 4 1.3 Status Indicator LED ................................................................................
1. Introduction The Cascade Modem is a high performance ultra low power modem designed to be used in the field or office. The Cascade Modem version 2 is available in a 57.6K extended temperature model only. Specifically designed for road side traffic monitoring equipment, the Cascade Modem contains many additional features to improve the quality and reliability of your data collection system. This includes an extremely low standby current consumption of less than 0.
1.2. Features The Cascade Modem contains the following features and functions. (57.6K) Available in 57,600 Baud Extended Temperature Ultra Low Power Features, Functions, & Specifications: Ultra low power consumption, less than 50 microamperes in standby mode and only 50 milliamps in full operation. Can be powered from 5.0 Volts to 40.0 Volts DC. Power can be connected to Power Input Jack. Leaves standby (low power) mode on any RD or Ring Activity. Fully operational in less than 3 seconds.
1.3. Status Indicator LED The single tri color LED (Light Emitting Diode) on the modem indicates the modems current status.
1.4. Installation The Cascade Modem is easy to install. Simply connect the telephone line, serial cable (at 19200buad), and power connector and the modem is ready to use. It is highly recommended that you connect the surge suppressor lug directly to your ground rod (earth ground) using a minimum of 18 gage wire. When the power is connected the status LED will light for about 3 seconds and then start blinking steadily.
2. Modem Functions The following sections describe various modem functions and operations. NOTE: The letters DTE refer to the connection from the modem to the traffic counter or other device connected to the modems RS232 Serial Port (DB9). DTE stands for Data Terminal Equipment. 2.1. Jumper Settings The modem has a block of 4 jumpers which allow customer specific configuration of several modem options. Refer to the chart below for specific information.
2.2. Automatic Speed/Format Sensing The modem can automatically determine the speed and format of the data sent from the DTE. The modem can sense speeds of: (57.6k) 300, 600, 1200, 2400, 4800, 7200, 9600, 12.0k, 14.4k, 19.2k, 1038.4k, 1157.6k, 12115.2k, 13230.4k, 14245.76k, and 15307.2k The modem can sense the following data formats: Parity None Odd Even None Odd Even Data Length (No. of Bits) 7 7 7 8 8 8 No of Stop Bits 2 1 1 1 1 1 Character Length (No.
2.3. Modulation/Demodulation The modem Modulation/Demodulation uses an industry standard modem chip set which has been adapted for use with Cascade Modem. The Modulation/ Demodulation supports the following industry modem standards: V21 - V.21 (300 bps) V22 - V.22 (1200 bps) V.22B - V.22bis (1200 or 2400 bps) V32 - V.32 (4800 or 9600 bps) V32B - V.32bis (4800 to 14,400 bps) V34 -V.34 (16,800 to 33,600 bps) V90 - V.90 (to 56,000 bps) 2.4.
Boot Command Sequence Command Description AT:M0000,42,4F,4F,54,0D,41,54,45 Load characters “B,O,O,T,,A,T,E” in EEPROM beginning at address M0000 AT:M0008,30,0D,41,54,51,31,0D,41 Load characters “0,,A,T,Q,1,,A” in EEPROM beginning at address M0008 AT:M0010,54,53,30,3D,31,0D,0D,0D Load characters “T,S,0,=,1,,,” in EEPROM beginning at address M0010 2.6. DAA-Telephone Line Interface High performance modems are extremely sensitive to the DAA (Data Access Arrangement) performance.
2.8. RS232 Serial Interface The modem uses a standard DB9 style RS232 interface connector. This supports a full RS-232C/V.24 serial interface. The modem is controlled by sending it serial commands over the TXD (transmit) and can be monitored by serial status messages returned on RXD (receive).
2.10. FCC Part 68 Information The part 68 rules require the following or the equivalent information be provided to the end user of equipment containing a pre-approved modem module. Type of Service The Cascade Modem is designed to be used on standard device telephone lines connects to the telephone line by means of a standard jack called the USOC RJ-11C (or USOC FJ45S). Connection to telephone company provided coin service (central office implemented systems) is prohibited.
3. Modem Control 3.1. AT Command Format The Cascade Modem may be controlled by sending serial ASCII command sequences. After execution of the command, the modem returns a status message to indicate command is executed. Training the Modem The modem must be trained to match the DTE speed and parity so that it is able to recognize serial asynchronous commands sent to it. The modem is trained by sending it the following three character sequence.
3.2. Status Messages & Result Codes The modem responds with a status message after each command is executed and result codes after a modem connection is made or attempted. The status messages may either be up to two digits (terse), followed by a carriage return or may be a carriage return and line feed with a message in English (verbose) followed by a carriage return and line feed.
40 41 42 43 52 60 61 63 64 65 66 67 68 69 70 77 79 80 81 82 83 90 91 92 93 94 95 96 97 98 99 100 101 102 BLACKLIST FULL BLACKLISTED NO LINE LINE IN USE CONNECT 56000 CONNECT 32000 CONNECT 48000 CONNECT 28000 CONNECT 29333 CONNECT 30666 CONNECT 33333 CONNECT 34666 CONNECT 36000 CONNECT 37333 PROTOCOL: NONE PROTOCOL V.42 PROTOCOL V.
3.3. Basic AT Commands The XE5690SM uses “AT” commands for configuration and control. This section describes the AT command format and lists the commands, registers and result codes. Command Mode: The XE5690SM enters command mode on power-up, reset, a lost connection, or receipt of the escape code. In command mode the modem accepts commands from the host on transmit data. Appropriate result codes are returned on received data. Command Line Format AT commands follow a strict format.
XE5690SM Responses The XE5690SM allows a default command string to be automatically loaded into the modem on power-up or modem reset. A series of commands loads the default command string in HEX form into the Modem’s EEPROM. The EEPROM has 256 bytes available for command storage. The sequence to load the default commands into EEPROM must begin with the Boot command and ends with a double carriage return. All commands are loaded into the EEPROM in Hex form beginning with address M0000.
&Gn – Maximum Data Rate Selection n=3 1200 bps n=4 2400 bps n=5 4800 bps n=6 7200 bps n=7 9600 bps n=8 12000 bps n=9 14400 bps n=10 16800 bps n=11 19200 bps n=12 21600 bps n=13 24000 bps n=14 26400 bps n=15 28800 bps n=16 31200 bps n=17 33600 bps %Vn – Shared Line Use n=0 No auto detection of local line status* n=2 Check line voltage before going off-hook. “NO LINE” response if line is unavailable and “LINE IN USE” if line is off hook. &Hn – Protocol Selection n=0 V.
\Tn – DTE Rate n=0 300 bps N=1 600 bps N=2 1200 bps N=3 2400 bps N=4 4800 bps N=5 7200 bps N=6 9600 bps N=7 12.0 kbps N=8 14.4 kbps N=9 19.2 kbps N=10 38.4 kbps N=11 57.6 kbps N=12 115.2 kbps N=13 230.4 kbps N=14 245.76 kbps N=15 307.2 kbps N=16 Autobaud on AT command* \Vn – Connect Response n=0 Issue Connect and Protocol Responses * n=2 Issue Connect Response only n=4 Issue Connect and Protocol Responses with both transmit and receive data rates.
+MS – Select Modulation AT+MS sets the modulation and data rates to be supported by the modem. The command format is: AT+MS=a,b,c,d,e,f a – modulation type V21 – V.21 (300 bps) V22 – V.22 (1200 bps) V.22B – B.22bis (1200 or 2400 bps) V32 – V.32 (4800 to 9600 bps) V32B – V.32bis (4800 to 14,400 bps) V34 – V.34 (16,800 to 33,600 bps) V90 – V.
3.4. S-Register Summary S0 Answer on nth Ring: S0 sets the modem to automatically answer on the nth ring. Setting S0 to 0 disables automatic answer. Range: Units Default 0 to 255 Rings 0 S1 Ring Count: S1 is a read-only register showing the number of rings detected. If no ring is detected within 8 seconds, S1 is reset. Range: Units Default 0 to 255 Rings 0 S2 Escape Character: S2 sets the ASCII escape character. Values of 0-127 select valid characters; values from 128 to 255 disable the escape sequence.
S14Wait for Dial Tone Delay: S14 determines how long the modem will wait for dial tone when the W dial modifier is used. Range: Units Default 0 to 255 Seconds 12 S24Sleep Inactivity Timer: S24 sets the length of inactivity before the modem enters sleep mode. Zero disables sleep mode. Range: Units Default 0 to 255 Minutes 0 S30Disconnect Inactivity Timer: S30 sets how long the modem remains on line with no data flowing. Zero disables the timer.
3.5. AT Command Applications Pause When placing a call from an office with a telephone connected to a PBX it may be necessary to dial an access code (usually the digit 9) to get an outside line. Inserting a comma in the telephone number commands the modem to pause for a specific length of time. The factory default pause time is 2 seconds. Example : Dial 9, pause, dial number. Enter : ATDT9, T1234567 Multiple commas may be used for a greater delay time.
3.6. Factory Settings & Default States Diamond Traffic Products pre-initializes all modems with the following command sequence: 57.6k Baud Model: AT&FE0M1Q0V0X1\N5\Q0&C1&D2S0=2 AT\T9+GCI=B5 (COUNTRY CODE =US) This sets the entire correct modem configuration into non-volatile memory so that it works on power up. This can also be sent through the Centurion Software in the modem setup initialization lines or through any terminal program manually.
