EM31AR User`s Manual Rev 1.0
Contents
1. executes script 000 once if it exists Playing Background Music The automatic execution feature can be used to play background music while no trigger is being executed For example DS 1000 F 123 JO00 N001 F001 J000 END Here file 123 is loop played from power up but will be interrupted when the input is triggered After interruption the script jumps back to 000 so file 123 starts to play again although from the begin ning instead of where it left off EM31AR Firmware 1 0 User s Manual Page 4 of 4 Serial Mode The serial interface is RS 485 In order to enable it you must move the internal jumpers J1 and J2 to the ON position Also the con figuration file MODE TXT must contain a two digit device number ranging from 01 to 99 The hardware protocol is 9600 baud 8 data bits no parity and 1 stop bit The communication employs software flow control on a per byte basis That is for every byte it receives the player work ing as a DCE returns a confirmation byte The DTE must not send the next byte until it receives the confirmation A communication session always starts with a selection process The DTE first sends out an ASCII A which as the only exception will not be confirmed by any system on the bus The DTE then sends the device number in binary form ranging from 1 to 99 If there is a system with the matching number it will respond by send ing back an ASCII a within 100 m2. 1 KHz WAV files 4 In the Serial mode the DTE device receives wrong or no responses Make sure the DTE device s serial port setting is 9600 baud 8 data bits no parity 1 stop bit EM31AR Firmware 1 0 User s Manual Page 3 of 4 Script Mode The Script mode is used in advanced applications to activate a number of actions with a single trigger Note that the relay will not turn on off automatically in the Script mode It may be turned on off using the BN BF script commands Written in the configuration file MODE TXT using plain ASCII text the script consists of multiple lines each containing the commands for a particular script number in the following format nnn Command1 Commandz2 Here nnn is the script number ranging from 001 to 999 and is one of the following N Non interruptible Execution of this script is not interruptible l Interruptible Execution of this script is interruptible by a second trigger H Holdable Execution of this script continues for as long as the trigger is ap plied repeating if necessary The execution stops immediately when the trigger is removed Script 000 if defined is executed once automatically when the system powers up or after the system is reset Script 001 is ex ecuted when the TRG input is triggered Other scripts 002 and up can be executed when they are jumped to The following are the script commands Fnnn play File nnn Example F168 play
3. EM31AR Firmware 1 0 User s Manual Page 1 of 4 Technical Specifications Supported File Formats Windows WAV MP3 ISO 11172 3 compliant Max Number of Sound Files Simple Mode 99 Script Mode 512 Serial Mode 512 Memory Type CompactFlash card type Max Memory Capacity 2 GB Max Recording Time gt 1 hour Supply Voltage 12 VDC Typical Standby Current 60 mA Audio Output Stereo line level Relay Output Max Load 12A 120VAC 10A 240VAC 28VDC Serial Interface RS 485 Trigger Input 1 dry contact closure type Physical Dimensions 6 6 x 3 1 x 1 5 Interface Descriptions ae D Do Do O OUT PLAY UNUSED STOP POWER CF CARD SLOT N C B n c no com rst TRG cnD voc Power Input VDC amp GND Use a well regulated DC power supply to obtain the best sound quality Connect the power supply s positive output to terminal VDC and the negative output to terminal GND Trigger Input TRG This input is internally pulled up and protected with a serially connected diode Minimum pulse duration is 0 1 second System Reset Input RST Short terminal RST to the ground to reset the system Minimum reset duration is 0 1 second Relay Output N C N O COM Both normally closed N C and normally open N O contacts are available for external device control Maximum load is 12A 120VAC 10A 240VAC 28VDC Power Light POWER The power light is turne
4. ation 4 Sl Mode Same as the SI mode but triggering is done by opening the poles instead of closing them Variation 5 SH Mode In this mode the playback continues for as long as the trigger is applied The playback stops as soon as the trigger is removed Variation 6 SH Mode Same as the SH mode but triggering is done by opening the poles instead of closing them Script Mode Like the Simple mode the Script mode also utilizes a normally open device for triggering However instead of just playing a sound the Script mode allows the execution of a number of commands such as playing sound turning on off the relay and waiting some time Please see the Script Mode section for details Variation 1 DS Mode This is the regular Script mode Variation 2 DS Mode Same as the DS mode but triggering is done by opening the poles instead of closing them Serial Mode In this mode the system can be controlled remotely via a RS 485 link Please see the Serial Mode section for details System Configuration By default the system works in the SN mode To operate the sys tem in other modes you need to create a plain ASCII text file named MODE TXT on the flash card This file should contain one of the following mode names on the first line SN SI Sl SH SH DS DS For the Serial mode replace the mode name with a two digit serial ID number ranging from 01 to 99 You will also need to open the uni
5. capitals EM 31AR Firmware 1 0 User s Manual Page 2 of 4 Operation Modes The system can be configured to operate in one of the following modes A simple text based configuration file needs to be created on the flash card unless the default mode SN is to be used Simple Mode This mode utilizes a normally open device such as push button motion sensor or any device capable of producing a dry contact closure for triggering Simply connect one pole of the device to the trigger input TRG and the other pole to the ground GND The system gets triggered when the two poles are closed con nected to each other Upon power up or reset the first trigger will play the first file file 001 The second trigger will either play the next file file 002 if it exists or the first file file 001 if the next file does not exist The relay which can be used to turn on a lamp or a motor will be activated during the playback The system will play continuously if the trigger input is tied to the ground permanently Variation 1 SN Mode default In this mode applying trigger during playback will have no effect No system configuration is necessary to operate in this mode Variation 2 SN Mode Same as the SN mode but triggering is done by opening the poles instead of closing them Variation 3 SI Mode In this mode applying trigger during playback will interrupt it and start playing the next file immediately Vari
6. d on when power is applied Audio Output 1 8 Stereo Phone Jack This jack provides single ended line level output for further amplification Serial Interface RS485 amp RS485 Terminals RS485 and RS485 are shared with TRG and RST The serial port is disabled by default To enable the serial port open the unit and move internal jumpers J1 and J2 to the ON position You ll also need to assign a serial mode ID number in the MODE TXT file described in later sections When the serial port is enabled the trigger input and the reset input are both disabled PLAY Button Pressing this button will connect the trigger input TRG to the ground simulating a trigger ing action It is used mostly for testing STOP Button Press this button will stop the current playback if any It is used mostly for testing File Number Assignment Each sound file on the flash card must be assigned a unique file number for identification purpose The file numbers must be three digits long starting from 001 and up If you are to play more than one files they should be numbered consecutively from 001 Simply add the file number to the beginning of the original filename e g 001 oldname wav Note that if you want to store the maximum number of files 512 on the flash card you should keep the filenames including the file number to 8 characters or less and use all capitals with no special characters The file type MP3 or WAV must also be in
7. s Otherwise the selection pro cess has failed and should be restarted Once the selection process is finished successfully the DTE can start sending one of the serial commands one byte at a time For each byte sent the DTE should expect to receive a proper confir mation within 100 ms If the confirmation is missing or invalid the whole session should be aborted Testing the Serial Interface The serial port can be easily tested by using a Windows utility pro gram called HyperTerminal HyperTerminal allows you to send and receive data through the PC s serial port Refer to its help menu for more information The first step is to create a text file called MODE TXT on the flash card Put only two letters in the file 66 This will put the player into the Serial mode with a device number of 66 You also need to put a test sound file on the flash card named 001 WAV or 001 MP3 The next step is to connect the player to the PC using a proper cable If the PC does not have a RS 485 port install a RS 232 to RS 485 converter Run HyperTerminal and make a new connection with these param eters 9600 baud 8N1 no flow control Now we are ready to send the following commands to the player We Type Player Responds A B a see notes below F f 0 0 0 0 1 1 At this point the player should start playing the test sound file and the test is considered successful Note that we typed a letter B for the device number beca
8. s file 168 Wnnnnn wait nnnnn units of 0 1 second Example W00020 waits 2 seconds Jnnn jump to script nnn Example J007 jumps to script 007 BF turn off the relay BN turn on the relay END Always add the word END at the end of the script file You may add any comments for your own reference after END Notes Script lines must be separated by carriage returns the Enter key A script line is limited to 128 characters excluding and If more space is needed use the Jump command to cascade the commands Example DS N001 F007 BN W00030 F899 BF J168 1168 F001 W36000 J168 H033 F273 END DS is not really a script command but it tells the system to enter the Script mode When triggered the system executes script 001 Since this script is non interruptible because of the letter N in front of 001 it will always be completely executed as the following play file 007 wait 3 seconds turn on the relay play file 899 turn off the relay jump to script 168 Script 168 is executed as the following play file 001 wait 60 minutes jump back to itself Since script 168 is interruptible because of the letter in front of 168 this endless loop can be broken with a second trigger Script 033 will never be executed because it is not jumped to by any executable script Automatic Execution of Script 000 Upon power up or reset the system will automatically
9. t and move internal jumpers J1 and J2 to the ON position For the Script mode enter the script starting from the second line Use all capital letters and be sure to add the word END at the end of the script After editing the configuration file should be saved as plain text file ASCII text file or simply text file It is important to not save any text formatting information in the file Trouble Shooting Guide 1 Plays no sound at all a File numbers are not assigned properly b The system is in the wrong mode due to missing or incorrect configuration file c If the flash card is inserted when the power is on the system will not work To fix this problem turn the power off for a few seconds to reset the system d Some CF cards especially if they have been used in digital cameras need to be reformatted with the FAT16 file system Also some CF cards may be incompatible try a different brand of CF card e The audio output is at line level and needs to be amplified externally in order to drive speakers f The sound file is in an unsupported format 2 Plays a wrong sound File numbers are not assigned properly The system is in the wrong mode due to missing or incorrect configuration file oo 3 Sound quality is poor with lots of noise The flash card s speed may be too slow try a different brand This problem is more likely to happen when playing high bit rate audio such as 44
10. t playback Pause DTE Sends P System Confirms p If the system is not playing it will simply ignore the command When the system is being paused its Busy output terminal BY is still active Resume DTE Sends R System Confirms r If the system is not paused it will simply ignore the command Busy DTE Sends B System Confirms b if playing or paused or s otherwise Script DTE Sends C is the three digit script number System Confirms c is the same script number as above If the script number exists in the configuration file it will be ex ecuted If the script number does not exist the system will simply ignore the command Refer to the Script Mode section for details on how to write the script Error Code The system will confirm with an e if an invalid command is re ceived or if a valid command is received at the wrong time At this point the command should be aborted
11. use the ASCII code for letter B is 66 If you type a wrong letter during the test the player will respond either with a letter e or nothing at all depending on the situation In this case you need to restart from the very beginning Serial Mode Commands Play File DTE Sends F is the three digit file number Player Confirms f is the same file number as above If the file exists it will be played once If the file does not exist the system will simply ignore the command If the system is playing paused when the F letter is received it will return the error code e instead of f At this point the command should be aborted You should use the Stop Playback command to stop the current playback first before starting a new one Loop Play DTE Sends L is the three digit file number Player Confirms l is the same file number as above If the file exists it will be played repeatedly If the file does not exist the system will simply ignore the command If the system is playing paused when the L letter is received it will return the error code e instead of I lower case L At this point the command should be aborted You should use the Stop Play back command to stop the current playback first before starting a new one Stop DTE Sends S System Confirms s If the system is not playing paused it will simply ignore the com mand Otherwise it will terminate the curren
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