User manual - Giga Tms Inc
Contents
1. lo IR WN te IS S N Jo Revision 1 0 a 25 11 2009 1 Using the GS1000A 1000AU Switching the GS1000Ax on and off To switch the GS1000Ax on for normal operation slide the Power switch located on the side of the unit while not pressing the Scan button Switching the GS1000Ax on while keeping the Scan button pressed forces the device into a special Firmware Management mode FMM see Section 4 for details When powered up the GS1000Ax switches both Scan and B L LEDs on and performs a firmware check Upon successful test completion the unit enters a Normal mode of operation What happens next depends on whether USB Serial cable WAS T0239 or RS232 Serial cable WAS T0137 is plugged into the GS1000AU or GS1000A or not Note GS1000AU needs USB Driver which is included in attached CD please install the deriver first If the cable is not plugged then the GS1000Ax will beep and blink Scan LED twice then go into standby Device consumes minimal power in this state and will typically last 3 5 weeks on a single battery charge If the cable is plugged then the GS1000Ax will beep and its Scan LED will start blinking steadily the unit is ready for communications with PC Note that In an unlikely event of test failure the unit will quickly blink both LEDs for 2 seconds and seize operation In this case you may need to use the Firmware Management mode to check firmware validity and or download new firmware See Section 4 for deta2. memory contents Naturally this recovered data may not be consistent Some records may contain garbage data more on this in Il command description newer records may overlap older ones etc 11 GS1000A 1000AU User s Manual Get total number of records in the database A 41H PC to GS1000Ax ENQ M A GS1000Ax to PC STX number of records ETX BCC PC to GS1000Ax ACK NAK GS1000Axto PC EOT Number of records in the database is returned as a 6 digit decimal string Leading zeroes are appended to keep the string size constant Set machine number P 50H EOT New machine number is a 2 byte Hex string Therefore machine number can have a value in the OOH FFH range Unlike previous GS1000 version this also includes O original GS1000 rejected 0 GS1000Ax also allows the machine number to be changed at any time old GS1000 would only permit this in case there is no data in the database Get machine number Q 51H PC to GS1000Ax ENQ M Q GS1000Ax to PC STX current machine number ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC EOT Current machine number is a 2 byte Hex string Therefore machine number returned can be in the OOH FFH range GS1000A 1000AU User s Manual Get firmware version V 56H PC to GS1000Ax ENQ M V GS1000Ax to PC STX version string ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC EOT Version string can hav
3. retransmissions i e send the same data no more than 3 times All retransmit requests in excess of 2 times should be ignored Note following the functionality of the original GS1000 the GS1000Ax treats all characters other than ACK as NAK This means that when requesting retransmission the PC can send any character other than ACK to the GS1000Ax and the GS1000Ax will interpret this as NAK At the same time you are advised to use the NAK character for retransmission requests Summarized below are all supported commands New T 49H Download database data Modified D 44H Initialize clear database a Modified P 50H Set Machine number New Q 51H_ Get Machine number New Get firmware version Invoke Test mode 4 Power down go into Sleep GS1000A 1000AU User s Manual Set Date Time S 53H PC to GS1000Ax ENQ M S GS1000Ax to PC PC to GS1000Ax STX date time ETX BCC GS1000Ax to PC ACK NAK PC to GS1000Ax EOT Date time field has the following format YYYYMMDDhhmmss where YYYY year MM month DD date hh hour mm minutes ss seconds This command is slightly modified from its original version Original GS1000 rejected the command in case the database had some data New GS1000Ax will accept this command regardless of whether there is any data in the database or not To maintain compatibility with the original GS1000 the GS1000Ax will accept any date time data even
4. the data received into its internal memory Once the downloading is finished the GS1000Ax will execute one long beep and blink its Scan LED You may start using the newly downloaded firmware after switching the unit off and back on again A number of errors may occur during downloading All errors are indicated by B L LED buzzer patterns starting with long blink beep followed by a number of short blinks beeps corresponding to the nature of error One long blink beep timeout while waiting for the data from PC This can happen if you activate FMM download mode prior to starting the upload process on the PC side Remember you must always start the file transfer on the PC first then switch the GS1000Ax on with Scan button pressed and the cable plugged One long one short blink oeep communications error This error is normally caused by incorrect communications parameters setup on the PC side Make sure that you have selected 19200 8 N 1 19 GS1000A 1000AU User s Manual Xmodem One long two short blinks beeps the file is too long exceeds 64k This error means that you are downloading some wrong file GS1000Ax firmware files are always 64K in size One long three short blinks beeps internal program memory failure This error indicates some hardware malfunction Please send the unit for repair Checking existing firmware To check currently downloaded application firmware for being valid Switch the GS1000Ax off Ma
5. Ax will substitute this with an ID code consisting of ten 0 characters e f ID code of the record has the length of 10 but some characters within ID code fall outside of 20H 7FH range then those characters are substituted for _ character e f date and or time stamp of a record is invalid then it is substituted for default date 01 01 1999 and or time 00 00 00 Initialize clear database D 44H PC to GS1000Ax ENQ M D GS1000Ax to PC PC to GS1000Ax EOT This command reinitializes the database All contents are logically deleted which means that actual record data is not erased just some database related housekeeping is initialized The database data can still be recovered if not already written over using new M command Original GS1000 did not allow to perform this command on the non empty database New GS1000Ax will accept this command at any time even if the database contains some data Prepare to recover database data M 4DH PC to GS1000Ax ENQ M M GS1000Ax to PC PC to GS1000Ax EOT This command alters database in such a way that it appears to be 100 full Subsequent Il command will download the contents of entire database memory This command therefore can be used for data recovery purposes For example if D command is executed accidentally while GS1000Ax had some useful data inside then M command can be used to download entire database
6. ED once Error conditions test failures are indicated by generating one long beep and B L LED blink followed by a number of short beeps blinks e 1 long beep 1 short beep blink SRAM test failure e 1 long beep 2 short beeps blinks RTC test failure e 1 long beep 3 short beeps blinks FLASH test failure Database gets initialized during Phase 1 Also RTC s time and date are reset to 2000 01 01 00 00 00 in case they were invalid The RTC data is not changed if it appears to be correct Phase 2 is intended for RFID reader checkup Pressing the Scan Button activates the reader Scan and B L LEDs are blinking alternatively while scanning is in progress The GS1000Ax beeps when good read is achieved However the database record is not created The database therefore remains clean after the initialization performed in Phase 1 21 6 Specifications RFID reading range standard ISO card sized tag 4cm Database capacity 14320 records Operating time in standby mode 1350mA h battery App 4 weeks Operating time in active Scanning mode 1350mA h battery App 9 hours av 6000 scans Physical dimensions including 1350mA h battery 165 L x 47 W x 40 H mm Operating temperature range 0 55 C Operating humidity 5 95 According to actual experiences after the battery is full charged the power consumption of the battery depends on how much time the GS1000Ax spends on standby mode or active scanning mode One second of scan
7. GS1000A 1000AU Patrol Tour Terminal Important Notice New Features of GS1000AU This Manual refers to GS1000A and new member of the Patrol Tour Terminal family GS1000AU an improved version of GS1000A terminal Notable improvements additions include e Attached an USB to RS232 cable WAS T0239 to implement communication via USB port e USB Driver includes in attached CD e Internal device firmware can be upgraded via USB port Attention New Firmware Management mode FMM The GS1000Ax GS1000A or GS1000AU have two different modes of operation Normal mode provides regular device functionality and is largely compatible with the original GS1000 operation see Section 1 for details New Firmware Management mode FMM is provided for internal firmware checkup and upgrades Section 4 The Normal mode is entered by switching the GS1000Ax GS1000A or GS1000AU on while not pressing the Scan button Switching the GS1000Ax GS1000A or GS1000AU on while holding the Scan Button down forces the unit into the FMM The mode of operation cannot be exited other than by switching the GS1000Ax GS1000A or GS1000AU off and powering it on again Note The following descriptions about GS1000Ax represent GS1000A and GS1000AU if not mentioned specially Contents Refer to FAQ 1 Using the GS1000A 1000AU 2 Communications protocol 3 Using demo software GuardScan Monitor 4 Firmware Management mode FMM 5 Test mode 6 Specifications
8. Memory Full Warning Database memory is full It does not allow you to add any new records Free the database memory by uploading the data to the PC and clearing the data of the unit B L LED blinks once every 2 seconds gt Battery Low Warning The battery is low Further scanning is not possible Switch the GS1000Ax off and recharge the battery as soon as possible Allowing the battery level to drop even further may lead to erroneous machine behavior 1 long beep 2 short beeps with 2 B L LED blinks every 2 seconds gt Time Date is not set GS1000Ax s internal clock contains incorrect time date New database records cannot be added Use PC software to set the time and date Note this error will not affect the data in the database already A GS1000A 1000AU User s Manual 1 long beep 3 short beeps with 3 B L LED blinks every 2 seconds gt Database error Internal database error has occurred New records cannot be added First try to switch the GS1000Ax off and back on again the unit will attempt an auto recovery If this doesn t work use Recover Data function of PC software to recover the database or simply use Clear Data function of PC software to erase the database If this still doesn t work use Invoke Test function of PC software to reset the unit Note You can input password GIGA when starting software GuardScan Monitor to enable Recover Data and Invoke Test functions PC Communications To establish
9. S command issued by PC GS lt STX gt 20000407114120 lt ETX gt 06 Reply from GS1000Ax contains date and time 2000 04 07 11 41 20 Clicking Version button produces GS1000Ax internal firmware version 16 GS1000A 1000AU User s Manual string V command is used The data appears in the reply from GS1000Ax in the Terminal view PC lt ENQ gt 00V S command issued by PC GS lt STX gt V1 30 G GS1000A Reply from GS1000Ax contains standard lt ETX gt 6E version string V1 30 G GS1000A Special functions window has Recover data Invoke test mode and Power down buttons Recover data command allows you to download entire database data regardless of the actual amount of data contained in the database This is done by first invoking M command to make the GS1000Ax database pretend that its database is 100 filled with data Then regular Il command is executed to download the data Finally D command initializes the database Invoke test mode command forces the GS1000Ax into a special test mode Test mode is described in details in Section 5 Note that Test mode destroys database data in such a way that it cannot be recovered even using Recover data command Power down command suspends all communications between the GS1000Ax and the PC and puts GS1000Ax into standby Press Scan button to reawaken the device and resume communications 4 Firmware Management mode The GS1000Ax features new Firmware Managemen
10. at the GS1000Ax has detected the cable Communications between the PC and GS1000Ax is possible from this moment on Communications between the PC and GS1000Ax is only possible while Scan LED is blinking If the Scan LED is not blinking then this means that the GS1000Ax is not in the communications mode The GS1000Ax can 14 GS1000A 1000AU User s Manual only detect live cable i e the one that is connected to the powered PC If when you switch the GS1000Ax on with the cable plugged in the unit does not enter communications mode start blinking its Scan LED constantly then this means that the cable is not properly attached to the PC that PC is not powered or that PC s USB RS232 serial port is malfunctioning e f no communications between the PC and GS1000Ax occurs for about 3 minutes the GS1000Ax powers itself down automatically the unit beeps and blinks B L LED once then goes into standby Press the Scan button once to re awaken the unit Running the GuardScan Monitor e Make sure that the GS1000Ax is in the communications mode Scan LED is blinking constantly e Launch GuardScan Monitor e When GuardScan Monitor window opens click on the LOGIN button the Input login password dialog will appear e GuardScan Monitor has two modes of operation normal and extended Extended mode and it allows you to issue special commands Recover Data and Invoke Test mode All other commands are equally accessible in the normal mode a
11. attery reaches its full capacity after 3 5 charge discharge cycles Observe recommendations below to achieve the best battery performance e Completely recharge the battery before the first use or after having kept the battery in storage for a long period of time over 3 months e Do not over discharge the battery Once the GS1000Ax signals that the battery is low recharge the battery as soon as possible e Do not charge the battery too often e Keep the battery away from direct sunlight and heat sources 2 Communications protocol GS1000Ax communications protocol has been extended to accommodate several new commands At the same time backward compatibility is maintained with earlier device version GS1000 Communications between the GS1000Ax and PC take place in the form of commands sent by PC side and replies from GS1000Ax Commands and replies are packets of data using ASCII control characters to mark beginning and end of packets acknowledge the data request data retransmission and so on Control characters used by the GS1000Ax communications protocol are summarized below 03H Marks the end of data packet 04H Indicates the end of data exchange Marks the beginning of command packet Requests data retransmission Signals that command or data was not accepted Acknowledges reception of data 7w There are two different packet types command packets and data packets Command packets start with ENQ character and contain a machine n
12. communications with PC switch the GS1000Ax off plug the cable WAS T0239 into the GS1000AU s Serial port or plug the cable WAS T0137 into the GS1000A s Serial port and switch the GS1000Ax back on again Make sure that the cable is live i e that it is connected to the PC s USB Serial port for GS1000AU or PC s RS232 Serial port for GS1000A and that PC is on otherwise GS1000Ax will not be able to detect the cable Upon cable detection the GS1000Ax will generate a beep and start blinking its Scan LED Note When using GS1000AU the USB Driver should be installed first Always turn the GS1000Ax off before plugging or unplugging the connection cable Failure to do so may disrupt the GS1000Ax database data and possibly result in a permanent damage to the device Communications mode timeouts automatically in case there is no communications activity for more than 3 minutes In this case the GS1000Ax will beep and blink its B L LED once then go into standby PC software can also put the GS1000Ax into standby at any time Device can only be reawakened by pressing the Scan button Handling battery To install the battery insert its sharper end into the recess on the GS1000Ax body 1 then push down and snap into position 2 To remove the battery push the spring holder and pull the battery away from the unit 3 GS1000A 1000AU User s Manual The battery should be charged only with a specified charger Note that the b
13. connected to the PC USB port Or plug the RS232 Serial cable WAS T0137 into the GS1000A and make sure that the other side of the cable is connected to the PC RS232 port e Launch HyperTerminal and configure it as follows o When Connection Description dialog opens type any string 1 character minimum and press OK 18 GS1000A 1000AU User s Manual When Connect to dialog opens select an appropriate COM port from the Connect Using drop down box for example Direct to COM3 When COMx Properties dialog appears set communications parameters as follows Bits per second 19200 Data bits 8 Parity None Stop bits 1 Flow control None The HyperTerminal s main window will appear Choose Transfer gt Send file from the Main menu the Send file dialog will appear In the Send file dialog select the gsf file you want to download and choose Xmodem protocol from the Protocol drop down box The Xmodem file send for dialog will be displayed Press and hold the Scan button then switch the GS1000Ax on The unit should first turn both Scan and B L LEDs on and beep then start downloading data If instead of blinking both LEDs and beeping the GS1000Ax starts blinking its B L LED and beeping infrequently then this means that battery level is too low When receiving file the GS1000Ax will blink its Scan LED Scan LED is on while GS1000Ax is receiving or expecting to receive a block of data from the PC Scan LED is off while GS1000Ax is programming
14. e a variable length but will never exceed 61 character Although it is technically possible to have a version string with any kind of ASCII data in it we commit to the following format Vx XX pp p nn n where Vx xx version number i e V1 30 pp product model number i e G GS1000A nn n note i e rev 01 01 2000 Version number product model number and note fields are separated by space characters Version number and product model number are guaranteed to contain no space characters Note field can contain any characters including spaces Invoke Test mode Z 5AH PC to GS1000Ax ENQ M Z GS1000Ax to PC 11 No reply from GS1000Ax This command is used to force the GS1000Ax into a special Test mode No reply is issued by the GS1000Ax upon receiving this command Details of GS1000Ax operation in the Test mode are provided in Section 5 Note that Test mode destroys database memory contents in such a way that the data cannot be recovered even with the M command Power down O 4FH PC to GS1000Ax ENQ M O GS1000Ax to PC This command puts the GS1000Ax into the low power sleep mode Following this command all communications are suspended The User must press the Scan button to reawaken the device 13 3 Using Demo software GuardScan Monitor The GS1000Ax is supplied with a simple demo program called GuardScan Monitor The program allows you to setup the machine as
15. ects current machine number not the number the unit had at the moment of particular record creation In other words machine number is not a part of the record it is merely added to the record prior to sending it to the PC With current RFID technology used all ID codes have a fixed length of 10 digits Nevertheless it is a good idea to not base PC software algorithms on this fact Future versions of GS1000 and other related products may rely on different identification technologies producing different and even variable ID code lengths Same considerations also apply to what kind of characters to expect within ID code field Currently the GS1000Ax only outputs characters in the 0 9 and A F range However future product versions may output characters in the 20H 7FH range but never outside of it GS1000Ax has a new M command that makes the database look like 100 of its capacity is used This is to be able to download entire database memory contents When downloading the data after the M command PC can receive the data from GS1000Ax database memory locations that have never been actually written to and therefore contain garbage data The GS1000Ax performs some checks on the validity of its own database data Clearly illegal data is substituted for a fixed valid one in the following cases 10 GS1000A 1000AU User s Manual e f ID code of the record has the length other than 10 then GS1000
16. if it is invalid for example even with the month set to 13 The only situation when the GS1000Ax will return NAK at this point is when BCC check fails Invalid date time will not be written into the GS1000Ax s clock however Use new T command to verify if new date and time were actually set Get date time T 54H PC to GS1000Ax ENQ M T GS1000Ax to PC STX date time field ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC EOT Date time field has the following format YYYYMMDDhhmmss where YYYY year MM month DD date hh hour mm minutes ss seconds To maintain compatibility with the original GS1000 the GS1000Ax will not explicitly report any clock related error conditions Instead if the date and or time within GS1000Ax s clock are not valid for whatever reason default date and or time value will be returned Default date is 1999 01 01 default time is 00 00 00 GS1000A 1000AU User s Manual Download database data l 49H PC to GS1000Ax ENQ M l GS1000Ax to PC STX first record data ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC STX next record data ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC STX last record data ETX BCC PC to GS1000Ax ACK NAK GS1000Ax to PC EOT Record data format MM II YYYY MM DD hh mm ss where MM machine number RFID tag s ID code YYYY year MM month DD date hh hour mm minutes ss seconds Machine number refl
17. ils 3 GS1000A 1000AU User s Manual GS1000Ax will only detect live cable i e the one that is connected to the working PC Scanning reading RFID Tags RFID tags can only be read if the GS1000Ax is in the Normal mode of operation and live serial cable is not plugged into the unit To read a tag position the GS1000Ax in front of the tag as shown on the picture on page 3 then press and hold the Scan button Scan LED will be switched on One long beep will be generated upon successful read and the database record will be added to the GS1000Ax memory If no tag is read within 10 seconds from the moment the Scan button is pressed the scanning is disabled automatically read timeout Warnings and error conditions After pressing the Scan button the GS1000Ax can indicate several Warnings and Error conditions SCAN LED blinks once every 2 seconds gt Memory Low Warning Database memory is almost full gt 90 Adding new records is still possible but you are advised to free up the database memory by uploading the data to the PC and then clearing the data of the unit as soon as possible SCAN LED blinks twice every 2 seconds gt Memory Full Warning Database memory is full It does not allow you to add any new records Free the database memory by uploading the data to the PC and clearing the data of the unit After reading a tag B L LED lights for 2 seconds with 1 long beep then SCAN LED blinks twice every 2 seconds gt
18. in a raw text file format and can be viewed using simple text editor like Notepad Each record occupies one line of text and has the following format MM Ii YYYY MM DD hh mm ss where MM is machine number ID code of the RFID tag YYYY year MM month DD date hh hour mm minutes ss seconds Click Erase button to delete the data from the GS1000Ax internal memory invokes D command Make sure that you don t need the data any more before deleting it Machine number of the GS1000Ax can be set at any time by clicking on the Set Machine button invokes P command Machine number is a 2 digit hexadecimal number which means that it can contain digits from 0 to 9 and characters from A to F 00 23 5A B9 EC and FF are all examples of correct Machine numbers You can read machine number back by clicking on the Get Machine button invokes Q command Machine number will appear in the reply from GS1000Ax in the Terminal view e PC lt ENQ gt 00Q Q command issued by PC GS lt STX gt 15 lt ETX gt 02 Reply from GS1000Ax contains Machine number 15 Clicking Set time date button sets GS1000Ax internal clock from the PC clock S command is invoked GS1000Ax current date and time can be checked by pressing Get time date button T command The data will appear in the reply from GS1000Ax in the Terminal view PC lt ENQ gt 00T
19. ke sure that the cable is not plugged in Press and hold the Scan button then switch the GS1000Ax on The unit should switch its Scan LED on Memory checkup takes about 5 seconds to complete Upon test completion the GS1000Ax will either beep OK status or generate 1 long and 4 short B L LED blinks and beeps program memory verification failure The latter means that the data found in the unit s program memory is not a valid program code In this case obtain new GS1000Ax application program file and download it again The only error condition that may occur during program verification is internal program memory failure This is indicated by one long and three short beeps and B L LED blinks This error indicates some hardware malfunction not memory content error 20 5 Test mode The GS1000Ax provides a hardware Test mode that can be invoked by issuing a Z command see Section 2 Warning Hardware test initializes the database and also destroys its contents not just deletes it logically so the data cannot be recovered even using the M command Once entered the Test mode can not be exited other than by switching the GS1000Ax off The Test mode is comprised of two phases Phase 1 performs SRAM RTC and FLASH tests Phase 1 begins immediately upon entering the Test mode Scan LED is blinking constantly while tests are being performed Upon successful test completion the GS1000Ax will beep and blink its Scan L
20. ning is approximately equivalent to 2 minutes of standby power consumption 22
21. s well e Input regular password default after installation is 0000 four zeroes to log on for regular mode or GIGA case sensitive for extended mode Click OK when done e f the password you have entered is correct then all buttons in the GuardScan Monitor window will become active Plus additional Special functions window will appear in the extended mode e Select an appropriate COM port from COM Ports frame The GuardScan Monitor window features a number of command buttons a Data table that displays GS1000Ax data after downloading and a Terminal view which protocols all communications between the PC and GS1000Ax GuardScan Monitor allows you to change the default password of 0000 Press Set password button to set a new password Note that login password for extended mode GIGA is fixed and cannot be changed Click Upload button to download the GS1000Ax data This action first invokes A command to check the number of records in the GS1000Ax internal 15 GS1000A 1000AU User s Manual memory then I command to perform actual download The data if any will be downloaded and displayed in the Data table Rec field is the record number Mach is a machine number of a particular GS1000Ax ID code is the D code of RFID tag scanned Finally Date and Time fields display the date and time of record creation Click Save to file button to save the uploaded data into a file The data is saved
22. t mode FMM FMM allows you to quickly upgrade your GS1000Ax s internal firmware and also check validity of currently loaded firmware Contact your dealer for most recent firmware upgrade files FMM is entered by switching the GS1000Ax on while holding the Scan button pressed FMM itself has 2 sub modes of operation FMM download mode and FMM check mode If the GS1000Ax is switched on with the Scan button pressed and communication Serial cable plugged USB or RS232 then FMM download mode is entered communication Serial cable must be live i e it must be connected to the powered PC If the GS1000Ax is switched on with the Scan button pressed but without Serial cable then FMM check mode is entered Downloading new firmware To upgrade the firmware you will need a new firmware file and a terminal software for PC capable of transferring files using Xmodem protocol Checksum version All GS1000Ax firmware files have a fixed size of exactly 64K 65536 bytes and a gsf name extension although latter is not technically necessary The list of popular and widely available terminal programs includes HyperTerminal for Windows QModem and Term95 Procedure below assumes the use of HyperTerminal which is included into standard Windows 98 2000 XP package To upgrade the GS1000Ax s internal firmware e Switch the GS1000Ax off e Plug the USB Serial cable WAS T0239 into the GS1000AU Make sure that the other side of the cable is
23. umber of the GS1000Ax addressed and command code ENQ Machine number is supplied as a two character Hex string and can be in the OOH FFH range for example machine number of 4AH is represented by 4A ASCII string OOH is a so called universal machine number it will work with any GS1000Ax regardless of its machine number setting When using machine number other than 00 make sure that it matches current machine number of the GS1000Ax set by P command Using universal machine number of 00 will work well in all situations Command code consists of a single character See below for complete description of all available commands GS1000A 1000AU User s Manual Data packets start with the STX character and end with ETX character ETX character is followed by the BCC byte etx Bec Data characters BCC byte is a result of consecutive XOR operations on all data packet bytes excluding STX ETX and BCC byte itself It is important to realize that BCC byte can contain any value from OOH to FFH and this also includes control character codes When designing PC software be sure to distinguish between BCC byte and control characters In many cases reception of data must be acknowledged by the receiving side This is done by sending the ACK character In case the receiving side does not accept the data for whatever reason the NAK character may be sent to request retransmission Transmitting side shall make no more than 2
24. well as download the database data from the GS1000Ax into the PC In addition the GuardScan Monitor features a Terminal view that protocols all communications between the PC and GS1000Ax Thus this software can serve as a great starting point for designing your own GS1000Ax PC software System requirements The GS1000Ax runs under Windows 98 2000 XP An Internet Explorer 4 0 or later must be present on the system in order for the GS1000Ax to run correctly Installation Install the GuardScan Monitor onto your PC by running an installation file The installation is straightforward and has no differences from a standard installation process for other Windows programs Installation program will create new GuardScan Monitor icon in the Start Programs menu Connecting the GS1000Ax to the PC e Switch the GS1000Ax off e Plug the USB Serial cable WAS T0239 into GS1000AU make sure the cable is also attached securely to the PC s USB serial port or plug RS232 Serial cable WAS T0137 into GS1000A and make sure the cable is also attached securely to the PC s RS232 serial port Always switch the GS1000Ax off before plugging the cable into it Failure to do so may result in GS1000Ax internal database data disruption and permanent damage to the device e Switch the GS1000Ax on while not pressing the Scan button The unit will turn both Scan and L B LEDs on first self check see Section 1 then beep once and start blinking its Scan LED This means th
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