201 User Manual
Contents
1. b p d h inquire set COM3 setting b p d h as above b p d h updated settings BCODE null or p p inquire set symbologies pp 20 digits for each symbologies p p updated setting READERI null or s t r inquire set reader s scan mode from 0 to 7 t time out from 0 to 225 r redundancy from 0 to 3 s t r updated setting READER2 null or s t r inquire set reader 2 s t r as above s t r updated setting TMSTP null or d inquire set time stamp d 1 0 enable disable d update setting IDSTP null or d inquire set IDstamp d 1 0 enable disable d update setting SRSTP null or d inquire set source stamp d 1 0 enable disable d update setting Cipher 201 Hardware Reference Manual v1 1 April 18 2007 O 1995 CipherLab Co Ltd Cipher 201 Hardware Reference Manual 1 Table Of Contents 1 Table Of Contents rece A A EO E 2 List OF PIU tada SE 4 General EE deeg E EE A A EE SE A cio Lei lata i io O EAA NA ee o O SAI E A i RO A is dala 10 10 Program Memory Flash da 11 11 Data Memory EE 12 UE WEN E e ea Liebe ie ao ai ia 13 13 Memory and Calendar Backup Battery 14 EN EE D E A E A eae 15 EE EE 16 16 External Key bOaed soul docili leale 17 LF Membrane ESPA E 18 18 MARPAC EE 19 ARCO a iaia aio 20 18 2 Wedge OA EE 20 E 20 18 4 Loop Back KE EE 20 19 terrace Creare RI 21 I2. 2 signals are not photo isolated and are directly connected to CPU Output pins thus care must be taken in handling these pins Also on the software side if it is set ON by set_do the pin goes to low Whereas it goes to high when set OFF The output drive capability is limited as below e Output low voltage maximally 0 45V if sinking 1 6 mA e Output high voltage minimally 2 4V if sourcing 400 uA and minimally 3 75V if sourcing 100 uA Buffering is strongly recommended 19 4 Power Pins As stated earlier the 201 can be powered from external 5V through this connector or an unregulated 8V to 20V through the DC jack e Pin 23 5V power input can be used to draw power from host computer usually when configured as a decoder However as stated earlier this power source is automatically disconnected by an FET switch if an external power is fed through the DC jack e Pin 24 12V output this is the power switch gated power from the DC jack and can be used to power external devices However in doing so the overall power consumption and adapter power rating must be examined e Pin 25 5V output this is the power switch gated 5V regulated by the on board DC DC converter and can be used to power external devices However the on board regulator is able to supply up to 1 Amp current In doing so the overall power consumption must be examined Interface C2 e Cipher 201 Hardware Reference Manual 19 5 Loop Back Tester
3. be drawn from the host computer In case this host power is not available or not adequate an wall adapter in the range of 8 to 20V can be fed via the DC jack As long as this external power is asserted the 5V from CI or C2 is disconnected via an internal FET switch A simple buck type switching regulator LM2575 is followed to generate the required system power 5V This regulator is capable of providing up to 1 Amp currents and provides a reasonable typical efficiency around 70 to 80 Low ESR equivalent series resistance type electrolytic capacitors are used both at input and output sides to reduce ripples Figure 3 Main Power Connector The power is controlled via a dual pole dual throw DPDT type switch and a resistor is used to discharge the output capacitor when switch was turned off namely to the OFF side As the 201 itself consumes very little power typical 5 0mA with LCD back light off no external devices attached this ensures a sharp power up and down sequence DC DC Converter FET Switch Figure 4 Power Circuit DC jack 5V 5V Power Circuit O a Cipher 201 Hardware Reference Manual 9 Reset The system reset signal is generated by a voltage detector chip RICO RESV or compatible chips It outputs an active low reset signal when the system power drops below a pre determined voltage level Vdet The reset signal then changes to high when the power is higher than another pre determined voltage lev
4. very little power is consumed However a higher voltage e g 10V is needed to drive it To do this the speaker is driven by a pair of complementary CMOS level 5V signals to produce a virtually 10V peak to peak signals across the speaker This peak to peak voltage level is altered to control the sound level Up to 4 sound levels can be set and the corresponding peak to peak voltages are 2 5 V 5 V 7 5 V and 10 V The working frequency ranges from 1KHz to 6KHz and have a peak around 4 KHz Speaker 26
5. 2 Loop back testers can be used accompanying self test codes for diagnostics e For RS232 amp wedge emulation signals Se 131520 47K 4 5 14 16 VW 25 47K e For CMOS RS232 amp wedge emulation signals 9 10 13 15 vwWw 25 ATK 11 12 14 16 vwwv 25 ATK Connection of this tester is identical to that of the C1 except connector polarity Thus a one to one gender male to female changer or female to male changer can be used to swap between C1 and C2 Interface C2 23 Cipher 201 Hardware Reference Manual 20 RS232 COM3 An auxiliary RS232 is equipped in the front panel as below 1 No connection DB 9 Male 2 Receive data RS232 level DOODO de a RS232 level 0101010 5 Ground Front Veiw 6 No connection EN 7 RTS RS232 level 8 CTS RS232 level 9 5V Figure 13 COM3 RS232 COM3 24 Cipher 201 Hardware Reference Manual 21 LED There are totally 2 LEDs on the panel for showing system status READY Red GOOD READ Green The GOOD READ LED is activated if one or both of the reader good read LED is activated That is these two reader good read signal is Ored to drive this on board LED LED EXA Cipher 201 Hardware Reference Manual 22 Speaker A low power speaker is supported and the sound level is 4 level tunable This speaker electrically behaves like a capacitor which implies that current flows only when states are changed charge discharge capacitor and
6. A COM dd 22 A a css het A ednatiacl es 22 19 3 Digital OPUS A E E R a aaa 22 TO A go fe a at i peau sae 22 19 5 Loop Back RE 23 207 RS232 ACOM Ee 24 A E CO EE 25 ORI RAZOR ORA ROIO RIONI IO NATO 26 Table Of Contents Cipher 201 Hardware Reference Manual 2 List Of Figures Figure 1 Nomenclatute crinali RL aa 7 Fig re e EE 8 Figure 5 SRAM type Selec tons e id 12 Figure RAM Connection aria iaia 12 TE 2 ECD COM iS a aia iE 15 Figure 8 Reader 1 Connector eiii id 16 Figure 9 External Keyboard Connector e O e 17 Figure 10 Revpad Conmiectorto 2 aio 18 Bore Closed ili ili ll RE RA 19 Piede dl Cato lei ebete 21 LC Ta 0 EE 24 Preface Cipher 201 Hardware Reference Manual 3 Preface This manual provides in depth hardware informations of the Cipher 201 programmable terminal and serves as a reference for hardware and maintenance engineers Assumption has been made that readers of this manual have basic knowledge of electric and or electronic theory Numberings of all components including connectors passive and active components conforms to the PCB V3 01 However CipherLab does not guarantee this conformity The numberings and locations of components might be re arranged For confirmation please refer to the PCB and its schematics After all this manual intends to describe the operation theory of the circuitry utilized Preface 4 Cipher 201 Hardware Reference Manual General Features The Cipher 201 is equi
7. Ciprer E Cipher 201 Programmable Terminal User s Guide CipherLab Co Ltd 1 Packing This packing includes 1 This User s Guide 2 The Cipher 201 main unit 3 Optional LCD display and Calendar of Cipher 520 main unit by order 4 Power Adaptor 110VAC or 220VAC 5 Default System Master Card 1234567890 2 Components 2 1 Front View C1 DC Jack Power Switch C2 Speaker Ready LED Good Read LED Reader 1 z Ne AUX232 Reader 2 External Keyboard LCD Note The data memory can be a 32KB or 128KB SRAM However to accommodate different pin assignments The SRAM type must be selected via the jumper JP10 on the main board 3 Installation 3 1 Power Source The Cipher 201 can be powered 8 to 20V from the DC jack and 5V from Cl or C2 In case this host power is not available or not adequate a wall adaptor in the range of 8 to 20V can be fed via the DC jack 3 2 Reader Ports There are totally 2 reader ports provided each can be either a Wand Barcode slot reader Barcode Scanner with Laser emulation or up to dual track magnetic card reader 3 3 External Keyboard Port An external AT compatible keyboard can be attached for handy data entry The connector and pin assignment conforms to PC AT standards 3 4 RS232 Connection The factory settings of the RS232 port are 9600 baud rate with 8 data bits no parity and 1 stop bit And the Cipher 201s delivered from fac
8. S232 level 16 Digital Input 0 5 RTS 232 RTS RS232 level 17 No connection 6 short to C2 pin 6 18 No connection 7 Ground 19 No connection 8 short to C2 pin 8 20 short to C2 pin 20 9 RxD COMS receive data CMOS 21 RS485 level 22 RS485 10 TxD CMOS transmit data CMOS 23 5V power input level 24 12V power output directly from 11 CTS CMOS CTS CMOS level DC jack 12 RTS CMOS RTS CMOS level 25 5V power output It contains the follows e Serial communication COMI one and only one of the follows can be used e RS232 e CMOS level RS232 e Digital Input output External power input e Power pins Interface C2 21 Cipher 201 Hardware Reference Manual 19 1 COMI This communication port can be used as RS232 or CMOS level RS232 However as they share the same UART only one of them can be used at a time On the software part the RS232 and CMOS level RS232 functions the same 19 2 Digital Input 2 digital inputs are equipped However unlike 510 these 2 signals are not photo isolated and are directly connected to CPU Input pins thus care must be taken in handling these pins Also on the software side the read value is inverted That is if this pin is at high 2 2 5 3 V the get din will return 0 Whereas 1 is returned if it is at low 0 3 1 5V When floated 2 on board pull up resistors keep these signals at high 19 3 Digital Output 2 digital outputs are equipped However unlike 510 these
9. a RS232 level 15 keyboard emulation signal 3 4 RTS 232 RTS RS232 level 16 keyboard emulation signal 4 5 CTS 232 CTS RS232 level 17 keyboard emulation signal 5 6 short to C2 pin 6 18 keyboard emulation signal 6 7 Ground 19 No connection 8 short to C2 pin 8 20 short to C2 pin 20 9 TxD CMOS transmit data CMOS 21 RS485 level 22 RS485 10 RxD COMS receive data CMOS 23 5V power input level 24 12V power output directly from 11 RTS CMOS RTS CMOS level DC jack 12 CTS CMOS CTS CMOS level 25 5V power output It contains the follows e Serial communication COM2 one and only one of the follows can be used e RS232 e CMOS level RS232 e RS485 e Wedge emulation External power input e Power pins Interface C2 19 Cipher 201 Hardware Reference Manual 18 1 COM2 This communication port can be used as RS485 RS232 or CMOS level RS232 However as they share the same UART only one of them can be used at a time On the software part the RS232 and CMOS level RS232 functions the same For details of the RS 485 usage please refer to Cipher 510 hardware reference manual 18 2 Wedge emulation Up to 6 pins are reserved for keyboard emulation use When configured as a wedge emulation decoders please attach the CipherLab specified cable for that particular machine 18 3 Power Pins As stated earlier the 201 can be powered from external 5V through this connector or an unregulated 8V to 20V through the DC
10. as this will destroy all data stored in the memory 4 Flash Clone This is used to copy the program in FLASH memory to another terminal Usually it is used for diagnostic or software update 5 Flash Download This is used to update program code stored in the flash memory The code can be downloaded from a PC using the MDL6 or as described in the previous section from another machine Also the RS232 has been fixed to 38400 N 8 10 4 2 Host Command The host computer can get access to terminals on the RS485 nets via COM1 of the master station Basic characteristics of the Cipher 201 are listed below 4 2 1 Command Format Each command is composed as lt CC gt lt ss gt lt p p gt where lt CC gt command code string lt ss gt 2 digits station ID depending on command code lt p p gt parameters A delimiter carriage return hex Od 4 2 2 Command for master station The following commands are for master station only and thus NO station ID should specified Command Parameter Operation Echo Code ONLINE null inquire on line status aa bb cc lists of all station Ids that are currently on lined including the master station itself READ null read one record d d if available OVER if empty REMOVE null remove one record NEXT done OVER done and data file now empty MAXID null or ss inquire set maximum ss 2 digits maximum ID station IDs to be polled TIME null or inquire set sy
11. connector locations are depicted below EXTERNAL KEYBOARD Figure 1 Nomenclature Nomenclature 7 Cipher 201 Hardware Reference Manual PCB The PCB and locations of major components are shown below Power Switch DC Jack LCD ni n g x Connector 6 i D DI 2 J LES 1 d Zi n HA J as e a Ue ua e i o flash uO DD Falsh RAM EEN x SRAM Te a Gen I J 1 E p Se I JP10 il or CC 00 Battery i E i 7 O A 7 Bong me ka E 3 1 ni 7 a im ile S g We d T H4 i o E ed E SILK SCREEN TOP us m m Reader 1 Reader 2 der 2 Aux Reader 1 External RS232 Keyboard Figure 2 PCB PCB Cipher 201 Hardware Reference Manual 8 Power Circuit The 201 can be powered in two ways e 8to 20 V from the DC jack e 5V from C1 or C2 Later is used mostly for keyboard emulation decoders where the power can
12. e long leads and traces e Timer Adjustment It can also be fine tuned to compensate for a fast or slow clock This is an outstanding feature for those applications which need punctual system time such as a time clock application The tuning of the calendar chip is done by modifying the value of the trimming register of the calendar chip e Trimming Register The frequency of the calendar chip can be tuned in units of ppm via a digital trimming register The trimming range is from 0 to 255 ppm The bigger the value of the trimming register the slower the calendar chip runs For instance if the calendar chip is 1 second slow in one day then the value of the trimming register should decrease 12 to correctly adjust the calendar chip During system initialization this register is set to 186 1 sec 1 day 1000000 24 hours X 60 min X 60 sec 11 57 ppm 12 ppm e Write protected Unless changing calendar time is needed it is write protected and won t be accidentally changed e Cold start detection A cold start bit is set if power loss encountered or first power on The software can then recognize this bit and initialize the calendar chip Calendar chip 13 Cipher 201 Hardware Reference Manual 13 Memory and Calendar Backup Battery A 3 6V rechargeable NiCd battery is used to backup the SRAM and keeps the calendar chip running even when system power is off Its capacity is 60 mAh and is trickle charged with a typical 1 2 mA current After ful
13. el Vdet The Vdet is about 200 mV higher than Vdet this phenomenon known as hysteresis prevents noise to false trigger the reset circuitry The TLCS 900 is guaranteed to work within 5V 10 and the Vdet is set to 4 6V This reset signal does not only ensure the proper operation of the CPU but is also used to reset the UART chip NS82C50 and disables SRAM access connecting to SRAM CE2 during power up and power down The later is very important as the SRAM contents might be changed by unwanted spikes during supply voltage change Reset 10 Cipher 201 Hardware Reference Manual 10 Program Memory Flash 128 Kbytes flash memory U2 is used to store the program code and is guaranteed to last at least 100 000 erase program cycles 2 kinds of flash chips can be used the AMD 29F010 and 28F010 from Intel MX and so on and the access time must be 150 ns or faster The former is a pure 5V device whereas the later requires a 12V for erasing programming U3 and accompanying passive components are used to generate this 12V The U3 can be a Maxim MAX660 or Linear Technology LT1262 which two are total compatible Instead of inductor type switching DC DC converter these chips utilize a capacitor switching type circuitry and features smaller PCB space lower ripple and lower EMI emission The 12V generation is controlled by a CPU output pin and types of flash memory utilized is automatically identified by software refer to software manual rou
14. ht Anode Figure 7 8 DI 16 Back light Cathode LCD Connector Note that although utilizing the same LCD display as the 510 these 2 displays are not interchangeable Signals on the connector are mirrored this reversal of the power pins will destroy the display The LCD is equipped with LED back light and can be 4 levels tuned 2 high current NPN transistors 500 mA maximum Q8 and Q9 are used to drive the back light and Q8 provides twice current Q9 does Controlling Q8 amp Q9 yields current ratios from 0 1 2 to 3 Iback light Vcc Vce saturated Vf R Where Vcc supply voltage 5V Vce saturated transistor collector to emitter saturation voltage Vf LED forward voltage R resistor The typical back light current is then 5 0 2 3 8 20 50 mA That is from 0 to 150 mA on a 50 mA basis As this is an STN type LCD and the viewing angle is quite large view angle adjustment is unnecessary LCD 15 Cipher 201 Hardware Reference Manual 15 Reader There are totally 2 reader ports provided each can be either a Wand Barcode slot reader Barcode Scanner with Laser emulation or up to dual track magnetic card reader They are equivalent in both hardware and software Their connectors and pin assignments are listed below Beware that in order to decode barcode and magnetic card at the same time some signals share the same pin However the software is able to tell types of the readers attached DB 9 Ma
15. jack e Pin 23 5V power input can be used to draw power from host computer usually when configured as a decoder However as stated earlier this power source is automatically disconnected by an FET switch if an external power is fed through the DC jack e Pin 24 12V output this is the power switch gated power from the DC jack and can be used to power external devices However in doing so the overall power consumption and adapter power rating must be examined e Pin 25 5V output this is the power switch gated 5V regulated by the on board DC DC converter and can be used to power external devices However the on board regulator is able to supply up to 1 Amp current In doing so the overall power consumption must be examined 18 4 Loop Back Tester 2 Loop back testers can be used accompanying self test codes for diagnostics e For RS232 amp wedge emulation signals ds R 13 15 S28 47K 4 3 14 16 vW 25 47K e For CMOS RS232 amp wedge emulation signals 9 10 13 15 vvW 25 47K 11 12 14 16 vW 25 47K Interface Cl 20 Cipher 201 Hardware Reference Manual 19 Interface C2 This is a 25 pin D type male connector as depicted below 1 13 OO O O 0 OO O00 OO OO 00000000 C2 14 25 Figure 12 C2 1 Ground 13 Digital Output 1 2 RxD 232 receive data RS232 level 14 Digital Output 0 3 TxD 232 transmit data RS232 level 15 Digital Input 1 4 CTS 232 CTS R
16. le OAO 6000 Front Veiw Figure 8 Reader Connector JP4 amp 6 6 PowerEnable Mousel 8 Notused Data e ee ae Reader 16 Cipher 201 Hardware Reference Manual 16 External Keyboard An external AT compatible keyboard can be attached for handy data entry The connector and pin assignment conforms to PC AT standards DIN 5F 1 clock 2 data 2 D 3 No connection 5 2 D 4 ground 5 5V Front View Figure 9 External Keyboard Connector However these signals are also used to simulate a keyboard when configured as a wedge type decoders In that case this connector should be left unconnected and the CipherLab special wedge cable for that particular wedge emulation should be plugged to CI Then the original keyboard used by that host computer can be then attached to the special wedge cable External Keyboard 17 Cipher 201 Hardware Reference Manual 17 Membrane Keypad A standard 16 key membrane keypad is provided for data entry Membrane Keypad 1 8 Figure 10 Keypad Connector 1 Inl 5 Out 1 2 In2 6 Out 2 3 In3 7 Out 3 4 In4 8 Out 4 18 Cipher 201 Hardware Reference Manual 18 Interface C1 This is a 25 pin D type female connector as depicted below 13 1 O0 0 0 0 0 0 00 00000 oooo0oo0oo0oo0o00000 Figure 11 CI 1 Ground 13 keyboard emulation signal 1 2 TxD 232 transmit data RS232 level 14 keyboard emulation signal 2 3 RxD 232 receive dat
17. ly charged it is able to sustain for more than 15 months For example SRAM LL type SONY CXK581000 current consumed is 0 7 uA typical and 4 0 uA max 0 to 40 V3022 0 9 uA typical 1 5 uA max Time typical 60 mAh 0 7 0 9 37500 hrs 1563 days gt 52 months Time worst 60 mAh 4 0 1 5 10909 hrs 455 days gt 15 months Although behaves in similar ways unlike system power switching between 5V and battery is done by 2 transistors and some passive components This circuit features a very low leakage base to collector leakage current of the PNP transistor Q1 back to the 5V and a low voltage drop saturated Vce 0 2V This low drop is necessary for most CMOS chips If you are interested in this issue pick up some CMOS chip data sheets When system power is supplied the supply voltage for these chips SRAM amp calendar is 5V Vdrop Whereas signals are directly from to CPU and other chips which are supplied with 5V However for SRAM a CMOS chip the upper limit of input signal is Vdd 0 5V If using diodes such as 1N4148 for switching the voltage drop is also 0 6V which is too large and will damage these chips Memory and Calendar Backup Battery 14 Cipher 201 Hardware Reference Manual 14 LCD An optional 20 X 2 LCD display can be equipped as follows 1 Ground 9 D2 2 Vec 5V 10 D3 P 3 view angle adjust 11 D4 00000000 Ee e EE EE 6 CS 14 D7 x KX 7 DO 15 Back lig
18. n a new value via numeric keys Then press ENTER key to conclude the new setting value 1 Line Connection gt lt Single gt 3 After all the system parameter modification are completed the F1 key must be pressed to update these modifications and 8 save the new settings into the program memory System will restart with the new settings If F2 key instead of F1 key is pressed all modifications of the system parameters will be discarded and retain the original settings 4 Followings are the system parameters Station ID Setting Line Connection Setting Max Station ID Setting Manager Card Setting Manager Password Setting LCD backlight Setting Master Card Setting Password Setting Buzzer Volume Setting Time Setting Timer Fine Tune Setting COM1 Setting COM3 AUX Setting Sybologies Setting Rdader1 Setting Reader2 Setting Time Stamp Setting ID Stamp Setting s Source Stamp Setting 2 Self Test 705750000500 x r ap E 3 This mode provides a simple but yet efficient way for diagnostic Press ENTER key for executing the following items test one by one Flash test SRAM test Beeper test LCD test 3 LED test DI amp DO test COMI test COMA test COM3 test 485 test Wedge test ADC test Calendar test Reader test Keypad test AT Keyboard test Shutdown test Init System This is used to set all system parameters to their default value and initialize the file systems Care should be taken
19. nned card ID system message and so on This is an easy to read wide viewing angle LCD equipped with LED back light and can easily be read even in a dim environment The viewing angle can be adjusted via a variable resistor as depicted in the Nomenclature 4 Programming System Parameters The system parameters of Cipher 201 Terminal can be programmed manually or by RS232 commands Manually programming the Cipher 201 terminal system is described in this section and programming the Cipher 201 via RS232 commands will be described under the section RS232 Command 4 1 Manually programming Power on the Cipher 201 and scan the master card Now Cipher 201 is waiting for entry of the password However if the password was set to none this message will not be shown and this step is simply ignored The system manager must key in the password now If the password is correctly entered Cipher 201 will be in the System Management mode where 2 major tasks can be done as follows 1 Setup System Manager 1 Setup 1 Press the ENTER key and now the Cipher 201 is in the setup mode and is ready to accept system parameter modification The Cipher 201 will show the name of parameter on the upper side of the display and the original setting value on the lower side 2 Line Connection Master 2 Press ENTER key then you can change the setting value of this parameter Use the and keys for selecting a new setting value or type i
20. pped with the follows TLCS 900 16 bit CPU running at 9 8304 MHz Program 128 KB flash memory Data memory 32 or 128 KB SRAM Optional Fine tunable calendar chip Memory amp calendar chip backup 3 6V NiCd battery 2 reader ports for barcode Wand Laser emulation scanners or up to dual track magnetic card reader optional 2 X 20 characters dot matrix LCD display with adjustable back light and viewing angle optional 4 X 4 membrane keypad 2 digital input ports 2 digital output ports external keyboard port AT keyboard or keyboard emulation 3 serial communication ports depending on ports can be configured as RS232 CMOS RS232 or RS485 General Features 5 Cipher 201 Hardware Reference Manual S Characteristics Basic characteristics of the Cipher 201 are listed below 5 1 Electrical e Main Power Supply Voltage e 8t020V DC from DC jack e 5V from C1 or C2 e Power consumption 0 5W maximum without LCD nor external devices attached 5 2 Environmental e Humidity operating non condensed 20 to 90 Humidity storage non condensed 10 to 95 e Temperature operating 0 to 50 e Temperature storage 20 to 70 e EMC regulation FCC class A and CE approved 5 3 Physical e Dimensions 179 116 32 mm without LCD e Weight 300 gram maximum without LCD e Material ABS e Color Gray Characteristics no Cipher 201 Hardware Reference Manual 6 Nomenclature The overall out looking and
21. stem time YYMMDDhhmmss system time YYMMD after command execution Once Dhhmmss set all stations on the net are 11 modified Note 1 The command REMOVE is effective only after current record has been read by Command READ else the data file remains unchanged even NEXT is echoed 2 When command TIME was issued the master automatically issues a broadcasting Command to update all stations n delimiter carriage return hex Od 4 2 3 Command for Individual station Individual station can be accessed via these commands and 2 digit station ID MUST be specified Command Parameter Operation Echo Code DCOUNT null inquire on line status aa bb cc stored in the data file TTUNE null or offset inquire fine tune calendar d d value of the tuning register offset offset value from 128 to 127 MCARD null or tm m inquire set master card tm m updated master card t code type m m up to 20 characters card ID PWD null or p p inquire set password p p updated password BL null or d inquire set backlight level d updated backlight level d 0 to 3 VOL null or d inquire set buzzer volume d updated buzzer volume 12 d 0 to 3 COMI null or b p d h inquire set COMI setting b baud rate from 0 to 7 p parity from 0 to 3 d data bits from 0 to 1 h handshake from 0 to 3 b p d h updated settings COM3 null or
22. tine download That is if 29F010 is used this circuit is not enabled During normal read this DC DC converter is disabled and the voltage stays at OV Program Memory Flash 11 Cipher 201 Hardware Reference Manual 11 Data Memory SRAM The data memory can be a 32KB or 128KB SRAM However to accommodate different pin assignments the SRAM type must be selected via the jumper JP10 as follows 256 K Bit 1 M Bit JP 10 Figure 5 SRAM type selector Also the SRAM should be plugged as follows 0 1 MBit d 256 K Bit PIN 1 Ul Ul Figure 6 SRAM type connection The SRAM used must be LL type to reduce battery power consumption and with access time 150 ns or faster These SRAMSs are backup by a NiCd battery and will be described in detail later Data Memory SRAM 12 Cipher 201 Hardware Reference Manual 12 Calendar chip A battery backup calendar chip is used to retain the system time even when power is off The chip utilized is a V3022 from EM micro electronic Marin SA It features the following outstanding features Very low power consumption When powered from the battery 3 6V the current is typically 0 9 uA and maximally 1 5 uA e Wide operation voltage range This chip works down to 2 0 V e On chip high precision oscillator This is a must for accurate time keeping as it is factory trimmed and external oscillators tend to be effected by outside electro magnetic noise temperature and so on for th
23. tory all have the line connection setting been set to multi station on line master User can use Aux232 or C1 or C2 to connect computer and transfer data RS 232 Configuration 3 5 RS485 Connection The RS485 ports are used to connect multiple Cipher 201s Every Cipher 201 station is connected to the RS485 bus line in a daisy chain style PC RS232 RS485 RS485 Connect Others C2 Cl RS 485 Connection between Cipher 201s 3 6 Digital I O The Cipher 201 provides 2 digitsal inputs and 2 digitsal outputs for controlling and monitoring external devices These inputs and outputs are photo isolated and share the same DB 25 connector as the O LI 1140 00000000000 d D 25P Male COM2 13 Digital Output 1 14 Digital Output 0 15 Digital Input 1 16 Digital Input 0 COM2 Port Connector and Digital Pin Assignment 3 7 Speaker A low power speaker is supported and the sound level is 4 level tunable This speaker electrically behaves like a capacitor which implies that current flows only when states are changed charge discharge capacitor and very little power is consumed However a higher voltage e g 10V is needed to drive it 3 8 LED Indicator There are totally 2 LEDs on the panel for showing system status READ Y Red GOOD READ Green 3 9 LCD Display A 2 x 20 LCD is used to display current system time sca
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