User manual - DV Industrial Computer
Contents
1. issue at least a PSON signal When the computer is in the suspend sleep mode it will consume even more power because the RAM needs to be powered at all times The power consumption in the suspend mode is few Watts No matter how big your car battery is it will eventually Motherboard drain your vehicle battery in a matter of days The DP022 addressing these issues by cutting off the SVSB rail after predefined amount of time timing settings The DP022 monitors battery voltage to protect against deep discharge When battery level drops below predefined trip value the DP022 will shut down and re activate only when the battery voltage amounts to the safety level that is sum of trip value and hysteresis value monitor computer ON OFF status All power supplies provide 5Vsb 5V standby so that the motherboard can IU y y A ox S ON OFF RESET 20pin ATX connector switch switch is INPC DP022 Automotive PSU 2 The DP022 is suitable for non vehicle computer applications when the IGNITION line has been tightly coupled with the ground to put your system into run or shutdown state by usual button connected to the motherboard Input Characteristics lutput Connector 2 pin PWL3 Minimum Input Operating voltage 9V 8 5V for less than 0 01sec Maximum Input Operating voltage 25V 30V for less than 0 01sec Maximum Input Current Sleep Mode 20mA Maximum Input Current Deep Sleep Mode 5mA Ra2. aa ollo o me 90 i PaA 00 of oa OOO 88 E Oo O O a RTL RT2 THERMISTOR 10k in Description 1 T SIGNAL 2 GND RESET SWITCH Pin Description 1 RESET SW 2 GND JP9 HDD OUT 2x0 Pin cription E e ae pe J eS RSE Pin Description Pin Description i 3 1 DCD 2 SINCRD gt Y 3 SOUTCTR gt 4 4 DTR 3 5 SG 6 S DSR 7 RTS 8 a ets F 9 10 oo elo o o 00 SX O QO Jp OO JPI 7 00 2 22 00 Pin Description LED ANODE lt 2 LED CATHODE lt gt JP3 POWER SWITCH ir Description 1 PWR SW el unn INPC DP022 Automotive PSU JP1 INPUT POWER escription 1 POWER C 8 ITION BATTERY SOUT SOUTC2 gt SINC SINC RT1 2 pin connector is used to connect remote 0 4m temperature sensor thermistor Place remote
3. input voltage value of Lower Voltage Threshold contents and initial values of Timers T1 and T2 current operating mode and status INPC DP022 Automotive PSU 12 Ib get STANDBYDELAY Press three keys b and Enter As a response the DP022 sends current value of STANDBYDELAY initial value for T1 timer in seconds This value should be loaded into counter of T1 timer when IGNITION goes low After that T1 timer starts time countdown The DP022 switches to StandBy state when T1 timer expires The STANDBYDELA Y value has been saved in EEPROM B set new value of STANDBYDELAY Press keys B and then type value of seconds from 0 to 255 and finish with Enter You can check accuracy of setting by b command get STANDBYDELAY If you set STANDBYDELA Y to 0 then the DP022 will switch to StandB y state immediately after circuit IGNITION has gone low cb get counter value of Tl timer Press four keys c b and Enter As a response the DP022 sends current value of T1 timer counter in seconds At the moment when IGNITION goes low while the DP022 is being in PowerOn state T1 timer starts decrementing counter value count down Therefore second command that can be sent with delay of some time will result in another value with difference that corresponds to delay from first command point les get counter value of T2 timer Press four keys c s and Enter As a response the DP022 sends curren
4. thermistors will be below 55 C The second error is input voltage is lower than Low Voltage Threshold the error that appears when input battery voltage will drop lower than Low Voltage Threshold but disappears when input voltage will rise above Low Voltage Threshold value more than value of Voltage Threshold Hysteresis The CONFIGURATION value has been saved in EEPROM IE set new value of CONFIGURATION Press two keys E and then type value of either 0 or 1 at finish with Enter You can check accuracy of setting by f command get CONFIGURATION If you set CONFIGURATION to O then the DP022 will not restart after recovery and will stay in mode Sleep Over Temperature PSU Overload or Fault till the r command has been sent or input voltage is off even over temperature or low input voltage error has been recovered gl get Low Voltage Threshold Trip Threshold Low Voltage Press four keys g 1 and Enter As a response the DP022 sends value of Low Voltage Threshold in millivolts The DP022 switches into Sleep PSU Overload or Fault state if input voltage does not exceed Low Voltage Threshold The Low Voltage Threshold value is being stored in EEPROM GI set new value of Low Voltage Threshold Trip Threshold Low Voltage Press keys G 1 and then type value of millivolts from 9000 to 1500 and finish with Enter You can check accuracy of setting by gl command get Lower Voltage Threshold gh get Voltage Th
5. INPC DP022 55W Smart PSU for Mini ITX Motherboards to be used in an Automotive 9 25Volt Input Environment ALL INFORMATION IN THIS USER MANUAL IS PRELIMINARY AND SUBJECT TO CHANGE R 3 14 September 2009 DV Industrial Computer Ltd DP022 rev 3 www inpc com ua Wide input range 9 25V Suitable for automotive applications Suitable for battery powered applications Complete with start up shut down control user adjusted saved in EEPROM Compatible with most Mini ITX boards equipped with a 20pin ATX connector Extended lifetime due to ceramic capacitors using Silent operation fanless no moving parts Temperature control Low heat dissipation efficiency over 90 Chassis mountable measurements 39x170x20 Connection via COM port with computer INPC DP022 Automotive PSU Introduction This manual is intended for firmware release 3 14 The firmware release number is written on the label stick on the MCU inside the device and also this number can be obtained by a proper command sent through the serial line Notice This device should be attached and tuned by specialized personnel only after familiarizing with current manual Please take a moment and read this manual before you install the DP022 in your vehicle Often rushing into installing the unit can result in serious damage to your DP022 converter computer and probably your car electrical system The DP022 converter has several wires that need to be insta
6. eed to be installed in various places When installing always double check the polarity of your wires with a voltmeter NEVER use the cigarette plug as a power source often the contacts are not capable of delivering high current to your PC AT FIRST Connect a 2 pin jumper cable between JP2 and the motherboards Reset header This will allow the DP022 to reset the motherboard by simulating a reset button press POLARITY MATTERS HERE Connect a 2 pin jumper cable between JP3 and the motherboards Power On header This will allow the DP022 to turn on and off the motherboard by simulating a power button press POLARITY MATTERS HERE Connect JP6 to COM port connector of your control computer This connection is not necessarily for the DP022 operation You can temporarily connect the DP022 to an instrumental computer for the time of adjust and diagnostic only JP6 is a 10 pin polarized connector that is used for connection via serial line RS 232 to the COM port of the computer The DP022 uses the RTS CTS hardware handshaking of serial line flow control However the DP022 ignores signal on RTS line assuming that control computer is always ready to receive data Therefore really only four wire link is required SG Signal Ground SIN RD Serial Input Read of data SOUT TR Serial Output Transmit of data CTS Clear To Send INPC DP022 Automotive PSU 4 170 6 4 1 08888 e a i 00 o No Ne joo co ED ai o o a o
7. ent Then you have to configure Shutdown or Standby mode of operation for OS Windows as shown below Click Start then lt Settings gt and lt Control Panel gt then double click lt Display gt icon as result access lt Display Properties gt window Click lt Screen Saver gt tab and click lt Power gt button to access lt Power Option Properties gt window Click lt Hibernate gt tab check box x lt Enable Hibernate support gt click lt Apply gt Click lt Advanced gt tab and click down arrow to open choices lt Under Power buttons gt of lt When I press the power button on my computer gt select one of three choices Standby Hibernate or Power off options Come back to lt Power Option Properties gt window and select lt Portable Laptop gt under lt Power schemes gt and click lt Apply gt Then shutdown the computer click Start and lt Shut Down gt under lt ShutDown gt window INPC DP022 Automotive PSU 17 Support and warranty Standard Hardware Warranty 1 Year Installation support 30 days via email INPC DP022 Automotive PSU 18
8. et up COM3 properties COM3 Properties Port Settings Bits per second Data bits fe yl Parity None y Stop bits h y Flow control Hardware y Restore Defaults Cancel Apply Click on File button in main menu of Hyper Terminal program and click on item Properties in pop up menu In dialog window PSU Properties select bookmark Settings and select the following properties PSU Properties Connect To Settings Function arrow and ctrl keys act as Terminal keys C Windows keys Backspace key sends ChkH Del Ctl H Space Ctrl H Emulation v Terminal Setup Telnet terminal ID TELE TYPE 33 Backscroll buffer lines 500 J Play sound when connecting or disconnecting Input Translation ASCII Setup Cancel INPC DP022 Automotive PSU 11 When Hyper Terminal configuration has been finished everything is ready to dialog with the controller Commands that are entered on terminal keyboard are sent to the controller PSU via serial port while input data flow is displayed on terminal window In the clear terminal window enter the first command h help press keys h and then Enter As a response the controller sends firmware release number and list of commands that are supported in Monitor mode PSU HyperTerminal E ax Fle Edt View Cal Transfer Help Ol 3 O gt h PSU 3 14 a All display b get standBy delay B100 set standB
9. ght IGNITION goes low and the Countdown Timer T1 starts The DP022 waits for STANDBYDELAY then Countdown Timer T1 expires The DP022 then sends a pulse again over JP3 pins to shutdown the computer The shutdown pulse was successful and the computer turned off Standby The Countdown Timer T2 starts The DP022 waits for SLEEPDELAY then Countdown Timer T2 expires The DP022 then goes to Sleep mode and preserves battery power While in Deep Sleep or Sleep mode the DP022 constantly monitors your car battery voltage levels preventing deep discharge situations by automatically shutting down until battery levels reach safe levels again INPC DP022 Automotive PSU 7 If the DP022 has to be used as a regular ATX PSU with button Power On Off of course the DP022 monitors battery voltage to protect against deep discharge and monitors temperature and outputs You can monitor these parameters via serial line equally well as if the DP022 controls the IGNITION signal LED Status Codes Buzzer Status 0 03sec Blink 2sec Off Deep Sleep 0 03sec Blink 2sec Off Sleep 0 03sec Blink 1sec Off StandB y 1sec Blink 0 03sec Off PowerOn 0 03sec Blink 4sec Off Sleep Over Temperature 0 03sec Blink 4sec Off Sleep PSU Overload or Fault Input Voltage must go low or r command must be sent to clear a fault Serial Line RS232 Notice The DP022 PSU operates completely independent of computer s software a
10. lled in various places When installing always double check the polarity of your wires with a voltmeter and by sight All registered trademarks are the property of their respective owners Overview The DP022 is a fully compliant ATX power supply designed to power a low power PCs from a single 12V power source The DP022 power supply has an MCU that controls and monitors various functions of the power supply operation Also it realizes voltages monitoring temperature monitoring and communication via COM port with computer As well the MCU realizes a WatchDog timer to supervise the computer A LED indicator in the power supply continually reports the power system status and Battery health It is also used for troubleshooting There are four 9 25V main operating modes of the DP022 Deep Sleep Sleep RS232 COM Standby Power On The DP022 has user selectable MCU driven timing settings allowing you to choose various ignition shutdown vehicle computer timing schemes settings These settings are user adjusted and saved in GND EEPROM These settings allow to overcome the main r i Buck Boost problems of vehicle computer power supplying One of PEES most difficult tasks of operating a computer in a vehicle and ATX eo is power consumption while the computer is OFF Even if power logic a your computer is totally OFF standby mode a computer ee ae LED will still consume a few hundred milliwatts needed to 3 3V 12V 12V
11. load that has been connected to the DP022 m get current mode of operation Press three keys m and Enter As a response the DP022 sends numeric value that corresponds to current mode of operation either 0 Gf DUMB MODE has been set or 1 if VEHICLE MODE has been set n get firmware release number Press three keys n and Enter As a response the DP022 sends firmware release number s get current state Press three keys s and Enter As a response the DP022 sends numeric value that corresponds to current state The correspondence table looks as following Value Status Explanation 0 PowerOn Switched on all rails have been activated 2 StandBy Switched off only 5Vsb rail has been activated 7 Sleep Switched off any rail has not been activated 8 Deep Sleep Switched off any rail has not been activated 9 Sleep Over Temperature Switched off any rail has not been activated 10 Sleep PSU Overload or Fault Switched off any rail has not been activated r reset error state and switch to StandBy state Press two keys r and Enter As a response the DP022 resets the error state and switches into StandBy state t get current value of temperature Press three keys t and Enter As a response the DP022 sends two values of temperature that aree separeted by symbol slash First value is measured by remote thermistor second is measured by internal DP022 thermistor Y
12. nd serial line connection The DP022 that is connected to control computer by serial line operates as a terminal device with fixed connection 9600 8 bit no parity 1 stop bit Usually computer acts as initiator of data communication the host The computer can send commands and data to the DP022 The DP022 responds by data block to the most commands sent from computer The DP022 realizes a likeness of ANSI VT100 terminal by means of subset of commands with extensions for WatchDog timer temperature and voltage measurement channel and so on Input from serial line is latched by incoming buffer of 23 byte size String with 24 bytes and more will be wrapped The DP022 starts parsing after receiving of CR 0x0d or LF Ox0a symbol or after overflowing of input buffer 23 bytes Note that parameters such as timeout for the WatchDog timer are in ASCII digits so 12 is represented by the characters 1 and 2 not by a single byte with the value of 12 Also characters are case sensitive so W and w are two different commands INPC DP022 Automotive PSU 8 WatchDog timer The WatchDog timer is designed to overpass a computer hanging up Usually computer almost never hangs up However if it hangs up and gets stuck usually there is nobody at the site to press the reset or nobody knows where the stuck computer is because there were no problem with it for a long time The WatchDog timer is used just for such situations It automatically resta
13. nge of Adjustable Lower Voltage Threshold 9 15V Output Power Characteristics Output Connector ATX Power 20 pin Molex P N 39 01 2200 Maximum Power at 13 5V Input engine is running Output Rail Current Max Current Peak Regulation lt 5 seconds 5Vsb 6A 8A 3 5V 6A 8A 3 3 3V 6A 8A 3 12V 2A 2 5A 3 12V 0 1A 0 15A 10 Total current on 5Vsb and 5V rails Maximum Power at 12 5V Input engine is off Output Rail Current Max Current Peak Regulation lt 5 seconds 5Vsb 6A 7A 4 5V 6A 7A 4 3 3V 6A 7A 4 12V 1 5A 2 0A 4 12V 0 1A 0 15A 10 Total current on 5Vsb and 5V rails INPC DP022 Automotive PSU Maximum Power at 10V Input engine cranks or deep discharge Output Rail Current Max Current Peak Regulation lt 5 seconds 5Vsb 5A 6A 5 5V 5A 6A 5 3 3V 5A 6A 5 12V 1 0A 1 5A 5 12V 0 1A 0 15A 10 Total current on 5Vsb and 5V rails Connection NOTICE Use the DP022 only with low power motherboards all VIA C3 C7 CPUs and Pentium M Atom that use V core from the 5V rail Do not use general purpose motherboards or 5 25 CDDs as they tend to use a lot of current on the 12V rail It s desirable to use 2 5 drives SlimCDDs or FlashDisks as they use only current from the 5V rail Do not connect a Car Battery Charger directly to the DP022 The DP022 has several wires that n
14. ot connect it And vice versa in order to have the computer switched of you must keep the IGNITION signal closed to the ground or GND pin 3 of JP1 or provide the IGNITION signal voltage level less than 0 5V by corresponding current load Le while it is working the DP022 analyses the ignition line of vehicle and controls switching on off logic and powering of the computer Common initial state is the ignition is turned off the IGNITION signal is low about 0 volts the DP022 is in Sleep state LED blinks as 0 03sec On 1sec Off The DP022 is waiting for ignition signal The user steps into the automobile and turns on the key IGNITION goes HI 12 Volts and as a result the DP022 wakes up from Sleep state The DP022 waits for at least 4 seconds then turns on the 5Vsb rail After another delay more than a second the DP022 sends an ON signal to the motherboard via the 2 wires connected to the JP3 and to the motherboard s Power On header The motherboard will turn ON and your system should start booting The Ignition is turned ON during driving Your computer will remain ON playing MP3s doing GPS Navigation etc The automobile goes to the gas station and the driver turns off the key and IGNITION goes LOW The DP022 now starts the Countdown Timer T1 The driver gets back in the car starts the car and the computer keeps playing the MP3s without a hiccup The user then drives home and turns off the car for the ni
15. ou can control temperature on the fly by sending this comand periodically lu get STARTUPDELAY Press three keys u and Enter As a response the DP022 sends current value of STARTUPDELAY value of delay for startup timer in seconds that the DP022 make as pause after input voltage 12V has been applied The STARTUPDELAY value is being stored in EEPROM U set new value of STARTUPDELAY Press two keys F and then type value of seconds from 0 to 255 at finish with Enter You can check accuracy of setting by u command get STARTUPDELA Y INPC DP022 Automotive PSU 15 Iv get current values of input and output voltages Press three keys v and Enter As a response the DP022 sends five values of voltages that are separated by symbol slash First value is input voltage nominal value is 13 5V second value is 5Vsb third 12V fourth 5V and fifth 3 3V Values have sent in millivolts You can control voltages on the fly by sending this comand periodically w get current value of counter of WatchDog timer Press two keys w and Enter As a response the DP022 sends current value of counter of WatchDog timer in ticks each tick is 0 3s long W set current value of counter of WatchDog timer Press two keys W and then type the value of ticks from 0 to 255 each tick is 0 3s long and finish with Enter As a response the DP022 sends symbol slash and just entered value which allow
16. reshold Hysteresis Hysteresis Low Voltage Press four keys g h and Enter As a response the DP022 sends value of Voltage Threshold Hysteresis in millivolts In case if the DP022 has been switched to Sleep PSU Overload or Fault state and this error was caused by dropping of input voltage below Low Voltage Threshold value and if the input voltage stays less than sum of Low Voltage Threshold and Voltage Threshold Hysteresis the DP022 will stay in Sleep PSU Overload or Fault state If input voltage rises over sum of Low Voltage Threshold and Voltage Threshold Hysteresis the DP022 will switch into StandBy state The Low Voltage Threshold value is being stored in EEPROM Gh set new value of Voltage Threshold Hysteresis Hysteresis Low Voltage Press keys G h and then type value of millivolts from 500 to 4000 and finish with Enter You can check accuracy of setting by gh command get Voltage Threshold Hysteresis h get list of commands Press two keys h and Enter As a response the DP022 sends firmware release number and list of commands INPC DP022 Automotive PSU 14 l get launching voltages table Press two keys and Enter As a response the DP022 sends the 20 row table with values of voltages that were measured at the moment of starting the DP022 Table contains 20 batches of voltages measured with 1 ms time slots each batch reflected in separate row At the start there was 20ms period to control This table helps to evaluate
17. rts the computer that is hung up To restart computer the WatchDog timer closes circuit between pins 1 and 2 of JP2 connector The WatchDog timer is off after starting of the DP022 To switch it on the command WW should be sent and timeout number of ticks one tick is 0 3 seconds should be set by indicating required W which is a value between 0 and 255 The driver program needs to set the timeout periodically to avoid the WatchDog hits and following reset contacts closing Detailed information about WatchDog is given in the further sections INPC DP022 Automotive PSU 9 Using the serial line of the DP022 in MS Windows MS Windows XP for example Assume that computer has available COM3 port that should be set as 9600 8 bit no parity 1 stop bit operation As a dialog application let us use Hyper Terminal that is included in MS Windows To get 1t ready open the folder Communications and run Hyper Terminal click on Start button and then Programs Accessories Communications The dialog window appears on the screen Let us name our connection as PSU arbitrary name Connection Description 2 x Y New Connection Enter a name and choose an icon for the connectior Name Psu Icon PSU Enter details for the phone number that you want to dial Country region United States 1 Area code fi Phone number Connect using M Cancel INPC DP022 Automotive PSU 10 And s
18. s to check accuracy of setting INPC DP022 Automotive PSU 16 Configuring your operating system to be able for safe shutdown standby with control from the DP022 MS Windows XP for example NOTE In order to realize such control ACPI Advanced Configuration and Power Interface should be used that is not a plug and play function If ACPI is not enabled at the time your Mini ITX motherboard is configured you should enable it before your operating system configuring as shown below Go into BIOS SETUP UTILITY usually you have to power up the computer and press the DEL key on keyboard Go to the Power tab then into APM Advanced Power Management option and select Enabled Also select Enabled for HDD Go back into Power tab and select S3 State for ACPT Suspend State If an application you have used or motherboard does not support standby mode then select S1 state Save all changes you have made and exit from BIOS setup utility If ACPI is not enabled at the time OS Windows is installed you should install as shown below Click Start then lt Settings gt and lt Control Panel gt then double click lt Add Remove Hardware gt icon as result let Windows automatically detect ACPI if it is enabled at the time your Mini ITX motherboard BIOS is configured Then install the proper drivers you may need the original Windows CD Reboot the computer to detect the newly installd ACPI compon
19. ss the Startup Shutdown sequence and battery protection At the end connect POWER line of JP1 connector directly to the automotive batteries terminal with heavy gauge wire INPC DP022 Automotive PSU 6 Apply 12 Volts to IGNITION by turning on the ignition or by flipping a switch and you re ready to go If you use the DP022 as a non vehicle PSU Connect the IGNITION signal to the GND by wire coupling the pins 2 and 3 of the JP1 connector Moreover in order to put your system into run or shutdown state there is the button connected to the motherboard according to motherboard manual Operation One should to fully appreciate the function of the IGNITION signal pin 2 After 12V supply voltage was applied a battery was connected the DP022 analyses the value of IGNITION signal If the IGNITION signal is higher than 3V then the DP022 will solve a query for the start by sending signal ON to the motherboard simulating button Power On Off push In response the motherboard activates signal for the DP022 power on The computer will start If the IGNITION signal is lower than 0 5V then the DP022 defines this as a query for power off and switches to StandBy state You should eliminate the situation when this voltage is between 0 5 3V as not defined because the DP022 will define mode not stable The DP022 has build in pull up of the IGNITION signal therefore in order to run computer you may leave the IGNITION signal free and do n
20. t value of T2 timer counter in seconds At the moment when the DP022 switches into StandBy state T2 timer starts decrementing counter value count down Therefore second command that can be sent with delay of some time will result in another value with difference that corresponds to delay from first command point le get SLEEPDELAY Press three keys e and Enter As a response the DP022 sends current value of SLEEPDELAY initial value for T2 timer in seconds This value should be loaded into counter of T2 timer when the DP022 switches into StandBy state After that T2 timer starts time countdown The DP022 switches to Sleep state when T2 timer expires The SLEEPDELAY value is being stored in EEPROM E set new value of SLEEPDELAY Press two keys E and then type value of seconds from 0 to 255 at finish with Enter You can check accuracy of setting by e command get SLEEPDELAY If you set SLEEPDELAY to O then the DP022 will switch to StandBy state at no time INPC DP022 Automotive PSU 13 f get CONFIGURATION Press three keys f and Enter As a response the DP022 sends current value of CONFIGURATION either O or 1 If the value is 1 then the DP022 is configured for restart in case of recovery after a special kind of errors revised The first of revised errors is overheating the error that appears when even one of two thermistor will reach 65 C but disappears when both
21. thermistor at CPU heatsink of your computer Connect the ATX Power Connector JP8 to the motherboard and any peripherals to JP9 connector AT THE END Connect the ground IGNITION and 12 Volt supply JP1 The DP022 can be tested in the lab before being installed into the vehicle The picture shown below explains how to do it and is in use for testing and research of the DP022 Certain details need to be noted for proper bench testing When connecting bench power use between 12 to 16 Volts DC to POWER and GND BATTERY terminals for best results The best way to do successful bench testing is to use an adequately sized 12V battery Bringing in the battery from the car or using an extra one that has at least a 10 AmpHour capacity will be sufficient in most cases Ri resistor 10k simulate load in the ignition line of vehicle Because of this resistor the voltage value will less than 0 5V if the Ignition Key is released POWER Key optional POWER i IGNITION Fuse Battery 2 JPI PSU DP022 12 6V In order to connect to 12V vehicle circuit the first you should connect the GND line of the JP1 connector directly to the automotive batteries terminal with heavy gauge wire GND may also be connected with vehicle chassis if desired Then connect the IGNITION pin 2 of JP12 to the switched 12 Volt supply wire ignition circuit or fuse box This will bypa
22. y delay 100sec 0 255 cb get standBy timer Counter value es get Sleep timer Counter value Ye get slEEp delay E100 set slEEp delay 100sec 0 255 f get conFiguration F set conFiguration 0 or 1 gl get Low voltaGe threshold gh get low voltaGe Histeresis G112000 set Low voltaGe threshold 12000m 900015000 Gh2000 set low voltaGe Hysteresis 2000mY 500 4000 h this Help 1 Launching data m get current Mode n get Number of firmware r Reset error status switch to Standby mode get current Status get Temperature values get startUp delay in sec set startUp delay in sec get Volatage values get Watchdog value W100 set Watchdog value 100tics 0255 Connected 0 06 27 Try 9600 8 N 1 SCROLL CAPS INUM Capture Print echo If you see this list all settings have been made correct and you can continue with study of commands The commands have friendly interface to interact with terminal program NOTICE The commands that start with symbol slash are focused to be used with dedicated programs of course you can use them with terminal program Some of commands answer with asked value but some of commands do not All answers that have started with symbol are tailed with symbol carriage return line feed and prompt symbol gt a display all Press two keys a and Enter As a response the DP022 sends current value of temperature output voltages
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