ASeries A1400DLplus User Manual RS-232 Data Logger
Contents
1.2. This message will be repeated The Memory Test has four distinct stages First the buffer memory is cleared then loaded with random test values held for 5 seconds and finally verified This cycle is then repeated The INPUT serial port will display this information with one line of data for each 64KB of buffer memory tested 13 A1400DLpl us User Manual lf a problem is detected with the memory the INPUT serial port will display the memory location expected contents and corrupted value The test will continue until the end of that stage and the INPUT serial port will display Self test failed on pass XX Where XX is the number of times the buffer test has completed The test will stop and the Transmit and Error LEDs will flash rapidly This test will continue for as long as the A1400DLplus is powered ON To stop the Buffer Memory Test simply power OFF the A1400DLplus 5 Power OFF the A1400DL and re configure it for normal use using the DIP Switch settings noted in Step 1 above Enable the battery and restore power for normal operation 14 7 0 SPECIFICATIONS CPU Buffer Size RS 232 Serial Ports LED Indicators Power Supply Battery Dimensions Weight Operating Temperature Storage Temperature A1400DLpl us User Manual Z85180 Microprocessor 18 432MHz 4Mb 8Mb 16Mb and 32Mb via 72 pin SIMMs STD EDO No Parity RS 232C CCITT V 24 Input is switch selectable DTE DCE Input is
3. customer unauthorised modifications or misues operation outside the environmental specifications for the product damage due to power surges lightening strikes or any other phenomenon outside normal operational specifications Alfatron Pty Ltd ACN 005 410 819 P O Box 4161 Unit 9 36 New St Ringwood VIC 3134 AUSTRALIA AUSTRALIAN MADE Web Site www alfatron com au 1 0 1 1 A1400DLpl us User Manual PRODUCT DESCRIPTION The ASeries A1400DLp us Data Logger has one Serial Input one Serial Output a battery backed in line data buffer It will accept data through its independent input port store the data in its buffer and send it to the independent output port It has been specially designed to handle Call Accounting infromation which is output from PABX equipment but its generic design makes it suitable for many other applications The physical layout of the ASeries A1400DLyplus is as follows A1400DLplus Data Logger Power Cable for Modem 0000000000000 OUTPUT cocc00000000 O Battery OFF OO ON Battery Input Selector Power Connector Figure 1 A1400DL viewed front amp rear The A1400DLplus uses 72 pin SIMM memory for its internal data buffer The Input and Output RS 232 Serial ports support baud rate speeds from 300bps to 115 200bps Each port may be configured independently and both ports support Hardware DTR DSR and Software Robust Xon Xoff handshaking protocols The Input port may also be
4. jumper selectable DTR DSR or CTS RTS Output port is fixed as DCE DB 25 Female connector DIP Switch selection of 300 to 115 200 bps baud rate e or8 Data Bits e None Odd or Even Parity e Hardware or Xon Xoff handshaking Power On Yellow Receive Data Green Transmit Data Green Data Error Red Dual Power Supply 16V 750mA DC and 9V 500mA DC PCB is fuse amp reverse polarity protected Plug jack 4 pin mini power DIN 16VDC 9VDC OVDC OVDC Rechargeable Sealed Lead Acid 12V 2 2Ah 20HR Intelligent battery charging circuit 12 hour memory storage time 47mm x 199mm x 201mm 1850 grams 10 to 35 C 0 to 45 C All specifications subject to change without notice 15 N42 DECLARATION OF CONFORMITY according to the European Commissions EMC Directive 89 336 EEC We Name of Manufacturer ALFATRON PTY LTD of Address of Manufacturer UNIT 9 36 NEW ST RINGWOOD VIC 3134 AUSTRALIA Australian Company Number ACN 005 410 819 declare under sole responsibility that the product Product Name ASeries A1400DLp us Data Logger with Battery Backup Model Number A1400DLp us to which this declaration relates is in conformity with the following standards CISPR 22 EN 55022 class B EMI from Information Technology Equipment ITE IEC 801 2 prEN55024 2 Electro Static Discharge Immunity IEC 801 3 prEN55024 3 Radiated RF Immunity IEC 801 4 prEN55024 4 Electrical Fast Transients Immunity
5. Lplus This will only work if the A1400 Output port is used in Xon Xoff handshaking mode refer to DIP switch settings in this manual When a PC is powered off the DTR line will go to a low state and disable the A1400DLplus transmitter as discussed above When the PC is powered on again one of two things will happen a If the last character received was an Xoff there is no problem because the Xoff would disable the A1400DLplus from sending data b If the last character was an Xon then the problem arises that the PC cannot guarantee that on power up it will keep its serial port handhaking level in a state which will keep the A1400DLp us transmitter disabled During the PC power up procedure its DTR line will remain in a high state from anywhere between 2 to 30 seconds depending on the speed of the PC and how long it takes to boot up At 9600bps this means that approximately 1 to 30K bytes of data would be lost The A1400DLp us addresses this problem by introducing a special Xon Monitor Timer feature This special feature means that it must receive an Xon at least once every 10 seconds otherwise it will disable its transmission Other Considerations It is advisable to read data out of the buffer in small lots say 100 bytes or one line at a time Every access to the buffer will start with an Xon and finish with an Xoff ensuring that the buffer stays disabled for most of the time when the applica
6. Step 1 above Enable the battery and restore power for normal operation 6 2 A1400DLpl us User Manual DRAM Confidence Test This test will detect and display the buffer memory SIMM size and then proceed to perform a memory test taking approximately ten minutes for each 4MB Therefore this test is not recommended unless the buffer memory is suspected of being faulty Test results will be sent to the INPUT serial port and will repeat as long as the A1400DLpl us is powered on The test is activated in the following manner 1 Power OFF the unit disable the battery and then make a note of the original DIP Switch settings of the A1400DLplus 2 Select Test Mode on the DIP Switch of the OUTPUT port only Refer to tables 3 1 and 3 3 in this manual for these switch settings 3 Configure the INPUT serial port via the DIP Switches Ensure that cable pinouts are correct for all attached equipment Ensure that attached equipment is configured to match the port of the A1400DLplus and is able to receive ASCII characters 4 Power ON the A1400DLpl us The Yellow Power LED and the Green Transmit LED will flash for each 64KB of buffer memory tested The following message will be output from the INPUT serial port and displayed printed on any attached equipment Random DRAM test DRAM SIZE size KB Where size is the total size of SIMM Memory installed If no SIMM Memory is installed then the displayed size will be 0
7. TS RS 232 Pin Assignments Pin Status DCE DTE 1 Ground FG FG 2 Input Output RD TD 3 Output Input TD RD 4 Used Pulled High CTS RTS 5 Used Pulled High RTS CTS 6 Used Pulled High DTR DSR M Ground SG SG 8 Not Used Pulled High DCD DCD 20 Used DSR DTR 22 Not Used Pulled High RI RI Note Output Port is fixed as DCE CABLE REQUIREMENTS Cable Shielding Alfatron recommends using shielded cable with all its products Shielding reduces Electro Magnetic Radiation and improves noise immunity This helps minimise interference to other equipment and will improve communications reliability The recommended cable construction is as follows Take the shield surrounding cable wires and solder it to the Frame Ground FG pin If FG is not available use Signal Ground SG but in this case always use a separate wire for ground which is connected at both ends The shield must be connected at both ends of the cable Cable Examples RS 232 Connection to a PC with a DB 25 Serial Connector Shield A1400DLplus FG 1 e_______ _ FG Cable End RD 2 2 TD D 5 7 o PE PC Cable End DCE CTS 4 gt 4 RTS DTE RTS 5 5 TS eee e DTR 6 gt 6 DSR C SG 7 e 7 SG DB 25 Male DCD 8 8 DCD DB 25 Female DSR 20 lt 4_ 20 DTR 10 A1400DLpl us User Manual 5 2 2 RS 232 Connection to a PC with a DB 9 Serial Conne
8. User Manual ASeries A1400DLplus RS 232 Data Logger with Battery Backup ALFATRON the interfacing specialists A1400DLp us User Manual Version 1 30 November 2000 COPYRIGHTS All rights reserved This document may not in whole or part be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form without the express permission in writing from Alfatron Pty Ltd Copyright 2000 Alfatron Pty Ltd DISCLAIMER Alfatron Pty Ltd has made every attempt to ensure that the information contained in this document is accurate and complete Alfatron Pty Ltd makes no representation or warranties of merchantability or fitness for any particular purpose Alfatron Pty Ltd reserves the right to make changes to this document at any time without notice Therefore Alfatron Pty Ltd assumes no liability for damages incurred directly or indirectly from errors omissions or discrepancies with the hardware and the manual TRADEMARKS All Company and Product names are trademarks of the Company or Manufacturer respectively WARRANTY Alfatron warrants its products against defects in materials and workmanship for a period of one year from receipt by the customer All warranty is carried out on a return to depot basis unless an alternative warranty coverage has been arranged WARRANTY EXCLUSIONS The above warranty shall not apply to defects resulting from improper or inadequate maintenance by the
9. battery and then make a note of the original DIP Switch settings of the A1400DLplus 2 Select Test Mode on the DIP Switch of the INPUT port only Refer to tables 3 1 and 3 3 in this manual for these switch settings 3 Configure the Input and Output serial ports via the DIP Switches Ensure that the cable pinouts are correct for all attached equipment Ensure that attached equipment is configured to match the port of the A1400DLpl us and is able to receive ASCII characters 4 Power ON the A1400DLpl us The Yellow Power LED and the Green Transmit LED will light and the A1400DLp us will produce a continuous stream of output as follows 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz 01234567890 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcedfghijklmnopqrstuvwxyz This output will continue for as long as the A1400DLp us is powered ON To stop the continuous output stream simply power OFF the A1400DLplus 5 Power OFF the A1400DLplus and re configure it for normal use using the DIP Switch settings noted in
10. ctor A1400DLplus RD Cable End TD DCE CTS RTS e D TR SG DB 25 Male DCD DSR OON OO A ODN AA OA DON YN W NO TD RD RTS CTS DSR DCD DTR 5 2 3 A1400DL as DCE Serial Cable to Other Devices A1400DLplus Cable End DCE nn DB 25 Male FG RD CTS RTS DTR DCD DSR NO OON OAHRWNY Shield LETT 5 2 4 A1400DL as DTE Serial Cable to Other Devices A1400DLplus Cable End DTE ea DB 25 Male FG TD RD RTS CTS DSR DCD DTR NO O OnN OP ONM WS Shield H PC Cable End o0000 2B DB 9 Female FG TD RD RTS CTS DSR SG DCD DTR FG RD TD CTS RTS DTR SG DCD DSR User Device Cable End User Device Cable End 11 A1400DLpl us User Manual 6 0 6 1 12 CONFIDENCE TESTING THE A1400DL The A1400DLplus incorporates two Self Diagnostic features designed to assist with an installation when troubleshooting is required These features will assist in establishing the correct operation of the A1400DLp us before connecting to other equipment Both tests are described below Character Generation Function Test The Character Generation Function Test will output a continuous stream of printable ASCII characters from both the Input and Output ports This function may be used to confidence test both ports of the A1400DLplus or test the operation of attached devices It is activated in the following manner 1 Power OFF the unit disable the
11. haking uses the Data Terminal Ready DTR and Data Set Ready DSR signal lines to control the flow of data between devices On the A1400DLp us DTR is an output signal line which is ready to receive data when the RS 232 level is high greater than 3Volts Conversely a DTR low less than 3Volts indicates that the unit is temporarily unable to receive data DSR is an input signal line which controls the output of the A1400DLplus A high RS 232 level greater than 3Volts indicates that data may be sent to the connected device A low RS 232 level less than 3Volts indicates that data cannot be sent to the connected device Hardware DTR DSR is the preferred method of handshaking under the DOS operating system A1400DLp us User Manual 3 2 Software Xon Xoff Handshaking 3 7 3 software Xon Xoff handshaking uses the Xon HEX 11 and Xoff HEX 13 ASCII characters to control the flow of data When using Xon Xoff with RS 232 levels always leave DIR DSR disconnected on the A1400DLplus Standard Xon Xoff performs handshaking in both directions by sending Xon and Xoff to the connected device and detecting these characters being sent from the connected device The Xon and Xoff are sent only once If a device connected to the A1400DLp us misses an Xoff due to corruption by electrical noise this device will continue to send its data and overflow the buffer of the A1400DLplus Alternately
12. if this device misses an Xon from the A1400DLplus a lock up situation will occur whereby the A1400DLp us is ready to receive data the device is ready to send data but the Xon character was missed In this lock up state both devices are waiting for each other to send something To overcome this lock up state Robust Xon Xoff handshaking Is used ROBUST Xon Xoff Robust Xon Xoff handshaking overcomes limitations in the Standard Xon Xoft protocol by repeatedly sending the Xon or Xoff character For example if an Xoff is sent from the A1400DLplus to a connected device and it is corrupted it will not matter In Robust Xon Xoff mode the Xoff character will be sent to that device each time a character is received past the cut off point of the A1400DLplus s buffer When the A1400DLplus is ready to receive data an Xon character will be sent repeatedly to ensure that the connected device may resume data transmission If only a single Xon character is sent as in Standard Xon Xoff there is the possibility of corruption and the lock up state would occur the A1400DLpl us having sent an Xon and awaiting data and the connected device awaiting an Xon before sending data Due to the UNIDIRECTIONAL nature of the A1400DLp us Robust Xon Xoff is implemented only on the INPUT port Port 1 A1400DLp us User Manual 4 0 4 1 5 0 5 1 5 2 5 2 1 SERIAL PORT PIN ASSIGNMEN
13. or 5 seconds Move the Battery Selector to the Enable position and insert power jack Power Up Self Test Feature During power up sequence described above the A1400DLp us performs a Power Up Self Test The Static RAM SRAM is checked for any errors If an error occurs during this test the unit will enter SRAM Error Mode and is indicated by the LEDs Receive Data Transmit Data and Data Error all flashing simultaneously This indicates that the A1400DLplus has a fault At the end of a normal Power Up Self Test the Power LED only will remain alight and the unit is ready for normal operation A1400DLpl us User Manual 3 0 CONFIGURATION OF RS 232 SERIAL PORTS 3 1 Location of Serial Configuration Switches The following diagram shows the location of the various switches on the A1400DLplus Printed Circuit Board PCB These switches can only be accessed with the cover removed as shown here DIPSW2 DIPSW1 DCE lt sDTE a unput Select Switch a O fe od kid tht SBI 83 OQ OQ OQ OQ OQ OQ oQ O9 o8 08 Hardware 89 89 I SIMM Socket Handshake 86 So O O Select Serial Serial OUTPUT INTPUT Figure 3 1 Location of Switches on Printed Circuit Board 3 2 Setting the DIP Switch The A1400DLplus has an independent DIP switch bank on the PCB for each of the ports see Figure 3 1 ab
14. ove Before changing the DIP switch settings move the Battery Selector to the Disable position and disconnect the power supply Change the settings as required and then Enable the battery and re insert the supply 3 3 Factory DIP Switch Settings INPUT and OUTPUT DIP Switches are factory pre set as follows 9600 bps 8 Data Bits No Parity DTR DSR Hardware Handshaking 1 Stop Bit A1400DLp us User Manual 3 4 DIP SWITCH SETTINGS Table 3 1 Parity amp Test Mode See Table 3 3 below Xon Xoft 3 5 DCE DTE Input Port Selection To make cabling easier the Input Serial port may be switch selected as either DCE or DTE The slide switch is located on the printed circuit board behind the serial port connector The diagram below shows the switch set to the DCE selection DCE lt gt DTE A1400DLp us User Manual 3 6 3 7 3 7 1 Hardware Handshake Selection The hardware handshake pair on the INPUT serial port may be jumper selected as either DTR DSR or RTS CTS 4 2 1 Input Port DSR CTS DTR RTS The jumpers J1 and J2 are located directly behind the Input serial port connector J1 C O J1 is used to select either CTS or DSR Jo moO J2 is used to select either RTS or DIR The diagram above shows the selection of the DIT R DSR handshake pair EXPLAINING SERIAL FLOW CONTROL Handshaking Hardware DTR DSR Handshaking Hardware DTR DSR hands
15. switch selected to either DCE or DTE to simplify cabling requirements How it works with a PABX Telephone System It addresses two major issues encountered in PABX buffer situations 1 What happens if equipment collecting the information lets say a PC loses its power Will the A1400DLplus continue sending out data which will then be lost 2 What happens if the PC is powered up after a power loss When does the A1400DLplus start sending data to the PC A simple in line buffer does not address either of these problems but the A1400DLplus has been specifically designed to handle these issues A1400DLpl us User Manual 1 2 1 3 1 4 Operation after Loss of Power Our standard buffer uses a 10K pull up resistor on the DSR line Pin 20 of its Output port to keep this line high enabling transmission of data at all times When a PC is connected this resistor is over ridden by the DTR line on the PC which controls data transmission from the buffer When the PC is powered off the resistor on the buffer takes over again inadvertently enabling the transmitter and therefore losing data The A1400DLplus does not use this resistor on the DSR line instead it passes control to its internal driver receiver chip This guarantees that the A1400DLpl us transmitter will be disabled when the PC connected to the output port is powered off Operation after Resumption of Power This issue is overcome in the firmware of the A1400D
16. tion does not access it This creates a smaller margin for data loss due to loss of power by the PC 2 0 2 1 2 2 A1400DLp us User Manual INSTALLATION To prevent battery discharge the A1400DLplus is factory shipped with the backup battery disabled For normal operation simply slide the switch at the rear of the unit to the Battery ON position lf a Modem Power Cable is installed then connect this to the Modem first Then insert the 4 pin power plug into the power jack socket Turn the power ON and observe the LEDs The Power LED should light up and remain alight all other LEDs should light up and then extinguish within 2 seconds After this sequence the A1400DLplus is ready for operation Power OFF the A1400DLp us and connect the correct cables between it and the target devices Use only cables which you know to have the correct pin configurations Pin assignments and Cable requirements are discussed in Sections 4 and 5 WARNING All devices must be powered OFF before connecting cables to them Incorrect cabling may cause damage to either the A1400DLplus or your equipment and is not covered by warranty How to RESET the A1400DLplus Once the battery has been enabled the A1400DLp us cannot be hardware reset by disconnecting the power adapter The following procedure must be used instead Move the Battery Selector to the Disable position factory setting Remove power jack from the unit and wait f
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