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PDAS-SDI - AMASS Data Technologies Inc

1. once you press the enter key FOR LOGGERS EQUIPPED WITH GOES SUPPORT 1 EDIT INTRODUCTION prompts the user to set the GOES clock as well as the platform address as follows Enter GMT Offset hh mm 05 00 04 00 lt CR gt Enter GMT Offset hh mm 04 00 lt CR gt GMT Time 20 29 33 RTC Time 16 29 33 Enter RTC Time hh mm ss 16 31 00 lt CR gt Press Enter to start GOES Clock lt CR gt Enter GOES Platform Address 8 hex digits 12345678 48161450 lt CR gt Enter GOES Platform Address 8 hex digits 48161450 lt CR gt Note that the PDAS clock is synchronized to the GOES transmitter clock immediately following every transmission that is following the expiration of the transmission window 4 2 1 Main Menu Edit Introduction 13 4 2 2 Main Menu View Data The data from any given sensor may be read without having to look at the recorded values in the log file View Data allows the user to access sensors instantaneously By selecting item 2 VIEW DATA of the main menu a sub menu appears which lists the sensors in the Sensor Log Table for which one may access in real time polling and displaying data at a rate determined by the user The sensors are referenced by the slot number to which they were assigned in the log table see Main Menu Sensor Log Setup Suppose that a shaft encoder was assigned to slot 0 of the log table and you wish to view the current encoder position Select item 2 from the main menu
2. 4 2 3 Main Menu Sensor Log Setup 15 In the sensor log table above this field is set to AIMO 1 in slot 0 because aMO is the correct command for measurement initiation of the SDI 12 sensor mounted on channel A at address 1 and we desire the first parameter of those returned hence 1 Sensor Label This is the label which will appear in the log file and is the only means of identifying a given sensor in the file The string must be no longer than 8 characters Sampling Rate The sampling rate is expressed in minutes and seconds Therefore the shaft encoder of slot 0 example above is sampled at every 30 seconds Logging Rate The rate at which samples are logged This value is expressed in hours and minutes Note that the PDAS SDI has the ability of logging instantaneous or average values When logging instantaneous values the unit simply logs the most recent sampled data from the sensor This mode of logging is denoted by a I next to the time interval in the sensor log table as shown above When logging average values the unit calculates the mean of the data sampled from the sensor since the last logged entry This mode of logging is indicated by A Min Max Rate The time interval between min max entries is expressed in hours and minutes The min max values for any given time interval are updated internally every time the sensor is sampled as determined by the sampling rate These values are then entered
3. C Activate Control Response M Send Message Response 0 lt CR gt Enter LOWER Trip lt value 0 23 39 lt CR gt Enter Lower Trip Actions 4 max No Actions 0 No Action Proceed D Disable Log Slot E Enable Log Slot C Activate Control Response M Send Message Response D lt CR gt Select Log Slot 0 15 1 lt CR gt Enter Lower Trip Actions 4 max D1 0 No Action Proceed D Disable Log Slot E Enable Log Slot C Activate Control Response M Send Message Response 0 lt CR gt Sensor slot 0 would then appear as shown in the Alarm Setup Table above In this example the user enabled slot 1 when the stage HG surpassed a specified value in order to begin monitoring the water turbidity WT This in fact is one of the simplest alarm configurations possible Note that the user also specified that slot 1 be disabled when the stage level dropped below a certain value 23 39 This is important if you do not wish the triggered slot to remain active when the stage drops some time later to lower levels The terms UPPER and LOWER Trip Value require further explanation These two values are in fact the same alarm point but are implemented to account for hysteresis as depicted in Figure 1 where the exact trigger points are shown for the alarm configured in the Alarm Setup Table above Given that the alarm is setup to be activated by the stage HG of slot 0 the following can be noted with respect to Figurel gt Slot 1 will be enab
4. 0 7800 0 7800 0 7800 0 7800 0 7800 Note the undated header information including the new Logging Rate of 10 minutes and the time prior to Tx of the Oldest Reading of 40 minutes that is a time of occurrence of 00 17 GMT 4 3 GOES Data Retrieval 42 4 4 Direct Communications Commands Depending on the version of firmware residing in your PDAS various levels of Direct Communications Commands are supported by the logger By Direct Communications we refer to communications that do not take place within the menu system Simply exit the menu with 7 exit and try the commands that follow to determine which are supported Direct Measurement Command command M lt CR gt where sensor slot number response lt date of last sample gt lt time of last sample gt lt sensor label gt lt value of last sample gt example The parameter HG is allotted to sensor slot 1 and you wish to view the most recent sample Type this M1 lt CR gt 1998 12 16 15 37 55 HG 9 123 The value for HG would only be updated with the next sample as defined by the Sampling Rate in the Sensor Log Table GOES Buffer Command command G lt CR gt where sensor slot number response lt value gt lt value gt lt value gt lt value gt example For instance if the parameter labeled HG occupies slot 0 and you wish to view the contents of the PDAS GOES buffer type this G0 lt CR gt 0 6280 0 7293 0 7800 0 7800 Note that the c
5. HG 170 180 0 780 lt _ 2 Maximum reading Min Max Interval 180 Occurrence of Max 170 min prior to Tx Sensor Label Note that the value for Min Max Rate is 180 minutes in this example Refer to section 4 2 3 regarding the Min Max Rate The reading in this case was taken 170 minutes prior to transmission that is at 22 40 GMT As explained in section 4 2 3 the Min Max values are based on the samples as defined by the Sample Rate therefore the accuracy in determining the minimum or maximum of the sensed value is dependent on the frequency of the sampling that is the Sample Rate 4 3 GOES Data Retrieval 41 As the PDAS GOES performs its logging routines as defined in the Sensor Log Table see 4 2 3 Main Menu Sensor Log Table it records data to both the internal flash i e the log file as well as to the internal PDAS GOES buffers These internal buffers are 96 bytes in size are numbered 0 to 15 and correspond to the sensor slots found in the Sensor Log Table They are used so that data that is loaded into the transmitter is formatted to a fixed width Note however that only data that is logged according to the parameter Logging Rate appear in these buffers that is instantaneous or averaged data Min Max values do not use these buffers but rather are loaded immediately into the transmitter which is why the Min Max entries shown above have single readings only The user may view the contents of any of the sixteen G
6. Selection 5 Temperature Units is used for configuring the temperature inputs that are available with option PAIM Use item 2 to set the time period for the View Data facility For example if the user wishes to change the period from 5 to 10 seconds enter the following 2 lt CR gt Enter View Data Period 1 60 sec 5 10 lt CR gt Enter View Data Period 1 60 sec 10 lt CR gt Sensor data would now be sampled and displayed with the View Data facility at the rate of once every 10 seconds real time Note that the period may be set within 1 to 60 seconds and that the default setting is 5 seconds Use item 3 to operate the logger in transparent SDI 12 mode In this mode the user enters SDI 12 commands that are encapsulated in the RS 232 data stream and relayed to sensors on the SDI 12 bus Upon receiving an SDI 12 command the logger automatically performs all that is necessary for data retrieval as prescribed by the SDI 12 protocol which it then relays to the user For example if the AMASS Data PSE SDI shaft encoder is mounted at address 1 on channel A the user may access it as such 3 lt CR gt Enter SDI Command String A a Command parameters A1MO lt CR gt 10001 2 009 A1V0 lt CR gt 10003 1 1 0 lt CR gt The user may communicate in this manner with other SDI 12 sensors on the bus provided that the correct address is entered and that the command is supported by the sensor in question Note that t
7. the System Setup submenu allows the user to initialize as well as diagnose refer to 4 2 6 2 b Diagnostics the GOES system Apart from setting the transmitter clock and the GOES platform address refer to 4 2 1 Main Menu Edit Introduction all configurations are performed as described below By selecting item 0 Communications from System Setup the user is presented with the option of configuring the GOES system via the auxiliary communications port as follows 0 lt CR gt Select Communications Port 0 Programmer Port 1 GOES Bristol 697 07 2 SDI 12 Ports A amp B 1 lt CR gt GOES Bristol Model 697 0 Initialization 7 GOES main menu 1 Diagnostics 2 ARM The Transmitter 3 Append String to GOES Buffer M Main Menu To set up the PDAS and B697 transmitter for GOES transmissions use 0 Initialization While doing so however the transmitter is disabled from making transmissions It is important therefore to rearm the transmitter following its initialization by using selection 2 ARM The Transmitter The user should also verify the operational status of the transmitter following the initialization with 1 Diagnostics refer to the next section 4 2 6 2 b Diagnostics By using 3 Append String to GOES Buffer the operator may attach a string to the data that is to be transmitted Note that the GOES platform address and the transmitter clock are set from the 1 Edit Introduction selection from the main menu as shown in section
8. 0 000 was used for simplicity e The SDI 12 parameter WT was logged at 15 minute intervals as requested 15 21 55 15 36 55 15 51 55 etc 4 2 4 Main Menu Log file 21 e HG was logged at 15 minute intervals as requested 15 07 55 15 22 55 15 37 55 15 52 55 etc e Note that the double entries at time 15 06 56 are the min max at every 2 hour as requested in the log table The next entry would occur at 17 06 56 e No min max entries appear for parameter WT because the log setup table did not request it 00 00 was entered as the Min Max time interval e Apart from the Min Max entries all logged data is to 4 decimal places due to the fact that averaged values were requested in the Sensor Log Table Instantaneous data is logged with 3 decimal places Selection 2 Retrieve from date allows the user to retrieve records based on the date of entry 2 lt CR gt Retrieve Archive back to YYYY MM DD 1998 12 16 lt CR gt All records dating from midnight of 1998 12 16 to the latest entry would then be archived 4 2 4 Main Menu Log file 22 4 2 5 Main Menu Sensor Alarm Setup This selection requires PROGRAM password clearance see section 4 2 Host Menu Operation Item 5 of the main menu displays the Alarm Setup Table for models with option Al For example Slot Log Sensor UPPER Actions LOWER Actions No Enable Command Label Trip Value Trip Value 0 1 1A1MO0 1 HG gt 23
9. 1 Mbyte non volatile flash 32768 records Connectors e 9 pin DB9S comm connector RS 232 e 9 pin AMP CPC SDI 12 12VDC port e 9 pin DB9P comm for modem or GOES with GOES e Optional 28 pin AMP CPC for PAIM option PAIM Input Primary voltage 0 20V Lithium battery voltage 0 5V Internal temperature 5 single ended channels PAIM Output 2 5V and 5V reference 250 microAmp current source Real Time Clock Motorola adjusted to 15ppm per year Environmental Characteristics Operating 40 to 55 C Storage 60 to 100C Humidity lt 100 non condensing Battery Backup Standard CR2032 3VDC Lithium battery RAM backup date time unit no site description sensor setup Event Counter Input optional 2 ports included with PSE D 2 ports obtainable with PAIM and PSE 20 msec closure Resolution 16 bit Rollover or Reset selectable Pulse or Switch Closure selectable Power Consumption lt 20mA w o comm port connected lt 45mA w comm port connected Maximum current lt 45mA Physical Characteristics Basic Models Height 152 0 mm 6 0 in Width 196 0 mm 7 75 in Depth 41 3 mm 1 625 in Weight 1 Kg 2 2 Ib Mounting Four Mounting brackets Standard height 5mm 0 2 in Models with built in shaft encoder Height 152 0 mm 6 0 in Width 260 0 mm 10 2 in Depth 70 0 mm 2 75 in Weight 1 2 Kg 2 64 lb Mounting Four M
10. 40 do E1 lt 23 39 do D1 1 0 1A2M0 1 WT No Alarm Functions 2 0 No Alarm Functions 15 0 No Alarm Functions SENSOR ALARM SETUP 1 ADD EDIT Alarm Function 2 CLEAR Log Slot Alarms M Main Menu Note that the first four columns are identical as that in the Sensor Log Table In fact the Alarm Setup Table is simply an extension of the Sensor Log Table The former displays the alarm functions if any that are configured for all sensors as defined in the rightmost four columns The columns entitled UPPER and LOWER Trip Value are used to define the values at which the alarms are to be activated see Figure 1 below whereas those entitled Actions are used to define what is to take place when either trip value is surpassed The user configures alarms with item 1 To add an alarm to slot 0 as shown in the Alarm Setup Table above proceed as follows 1 lt CR gt SENSOR SLOT ALLOCATION HG 0 WT 1 Select Log Slot 0 15 0 lt CR gt Enter UPPER Trip gt value 0 23 40 lt CR gt Enter UPPER Trip gt value 23 40 lt CR gt Enter Upper Trip Actions 4 max No Actions 0 No Action Proceed D Disable Log Slot E Enable Log Slot C Activate Control Response M Send Message Response E lt CR gt SENSOR SLOT ALLOCATION HG 0 WT 1 4 2 5 Main Menu Sensor Alarm Setup 23 Select Log Slot 0 15 1 lt CR gt Enter Upper Trip Actions 4 max E1 0 No Action Proceed D Disable Log Slot E Enable Log Slot
11. Mode 1 Random Mode 2 Append String to GOES Buffer M Main Menu Esc Back to GOES Main 0 lt CR gt Enter Self Timed Xmir Channel No 1 199 Enter Self Timed Xmtr Channel No 1 199 09 lt CR gt Enter Self Timed Tx Interval dd hh mm ss Enter Self Timed Tx Interval dd hh mm ss lt CR gt Enter Transmission Offset Time hh mm ss Enter Transmission Offset Time hh mm ss 09 lt CR gt 00 03 00 00CR gt 00 03 00 00 00 57 00 lt CR gt 00 57 00 lt CR gt Enter Transmission Window Length 1 1 Minute Window 2 2 Minute Window 1 lt CR gt Enter Transmission Window Length 1 1 1 Minute Window 2 2 Minute Window lt CR gt Enter Satellite Link Parameters 0 Short Preamble 0 98 sec 1 Long Preamble 7 3 sec 0 lt CR gt Enter Satellite Link Parameters 0 0 Short Preamble 0 98 sec 1 Long Preamble 7 3 sec lt CR gt The transmitter must now be rearmed in order for transmissions to take place This is done with 2 Enable Self timed Transmissions In addition the user would normally select 1 Diagnostics from the GOES main menu in order to establish the status of the transmitter set up Please refer to 4 2 6 1 b Diagnostics A string may be appended to the GOES transmission for testing or other purposes with 4 Append String to GOES Buffer 4 2 6 1 GOES TGT 1 Transmitter 30 What follows is an example of an initialization of the GOES TGT 1 transmitter in RANDOM MODE with the following parameters
12. Modes M Main Menu To set up the PDAS and TGT 1 transmitter for GOES transmissions use 0 Initialization While doing so however the transmitter is disabled from making transmissions It is important therefore to rearm the transmitter following its initialization by using either of selections 2 3 or 4 as required The user should also verify the operational status of the transmitter following the initialization with 1 Diagnostics refer to the next section 4 2 6 1 B Diagnostics When using either 0 Initialization or 1 Diagnostics during the set up of the GOES system the user may return to the GOES main menu by pressing the lt ESC gt key Note that the GOES platform address and the transmitter clock are set from the 1 Edit Introduction selection from the main menu as shown in section 4 2 1 Main Menu Edit Introduction This is normally done prior to the initialization described in the pages that follow 4 2 6 1 GOES TGT 1 Transmitter 29 What follows is an example of an initialization of the GOES TGT 1 transmitter in SELF TIME MODE with the following parameters eTransmission channel 9 e Transmission interval 3 hours e Transmission offset time 57 minutes past midnight GMT e Transmission window length 1 minute e Satellite link parameter Short preamble 0 98 seconds 0 lt CR gt NOTE ALL TRANSMISSIONS WILL BE DISABLED Press Enter to Continue ESC to go back lt CR gt GOES INITIALIZATION 0 Self timed
13. e Transmission channel 4 e Random interval 15 minutes e Satellite link parameter Short Preamble 0 98 seconds 0 lt CR gt NOTE ALL TRANSMISSIONS WILL BE DISABLED Press Enter to Continue ESC to go back lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Random Mode 2 Append String to GOES Buffer M Main Menu Esc Back to GOES Main 1 lt CR gt Enter Random Xmir Channel No 1 199 04 lt CR gt Enter Random Xmir Channel No 1 199 04 lt CR gt Enter Random Transmit Interval hh mm ss 00 15 00 lt CR gt Enter Random Transmit Interval hh mm ss 00 15 00 lt CR gt Enter Satellite Link Parameters 0 Short Preamble 0 98 sec 1 Long Preamble 7 3 sec 0 lt CR gt Enter Satellite Link Parameters 0 0 Short Preamble 0 98 sec 1 Long Preamble 7 3 sec lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Random Mode 2 Append String to GOES Buffer M Main Menu Esc Back to GOES Main lt ESC gt GOES Transmitter TGT 1 Bonen 0 Initialization gt main menu 1 Diagnostics 2 Enable Self timed Transmissions 3 Enable Random Transmissions 4 Enable Both Xmit Modes M Main Menu Note that the lt ESC gt key was used to return to the GOES main menu NOTE that the transmitter must now be rearmed in order for transmissions to take place This is done with 3 Enable Random Transmissions In addition the user would normally select 1 Diagnostics from the GOES main menu in order to establish the stat
14. lf gt Read minimum and maximum values e command aR1 maximum or aR2 minimum Response a lt data buffer gt lt cr gt lt lf gt Read the event counter values e command aR3 event counter 1 or aR4 event counter 2 e response a lt data buffer gt lt cr gt lt lf gt Return identification string e command al Response a lt identificationstring gt lt cr gt lt lf gt Acknowledge active command e command a Response a lt cr gt lt lf gt Address query command e command Response a lt cr gt lt lf gt Change SDI device node address e command aA lt new address gt Response lt new address gt lt cr gt lt lf gt Set Commands 1 Set encoder offset e command aSO lt offset gt Response a lt cr gt lt lf gt Set encoder scale units per revolution e command aS1 lt scale gt Response a lt cr gt lt lf gt Set mode of event counters Ev models only e command aS2 lt mode for event counters gt refer to APPENDIX D for mode codes e response a lt cr gt lt lf gt Set scale of event counters Ev models only e command aS3 lt scale gt counter 1 or aS4 lt scale gt counter 2 e response a lt cr gt lt lf gt Reset event counters e command aS5 Response a lt cr gt lt lf gt APPENDIX C PSE Shaft Encoder Commands 50 APPENDIX D MODE CODES FOR EVENT COUNTERS The following is applicable to models with built in event counters such as the option PSE D The mode of the event c
15. menu bar then on Capture text e Type a path and file name for the new session then click on Start The ensuing transaction between host and PDAS will now be recorded in the capture file for later perusal When the session has terminated simply click on the Disconnect button on the toolbar close the emulator window and open the capture file which now contains the entire hosting session Note that upon closing the emulator window a message such as Do you want to save session AMASSER will appear Click Yes An icon with the label amasser should then appear This icon may be dragged onto the desktop if so desired To initiate any future sessions the user need only click on the icon 4 1 Getting Started 10 Note that although the baud rate of the programming port defaults to 9600 it is in fact programmable from 300 to 19200 baud and is accomplished from the System Setup submenu see below Now that the emulator window is on the screen and that the Capture text has been initiated the user can begin using the menu system as described in the following section 4 2 Host Menu Operation The PDAS SDI uses a password protection system for safeguarding the unit from intruders This system comprises two levels of access entitled ENTRY and PROGRAM Assuming the user has set up the dumb terminal emulator as explained in section 4 1 Getting Started he she may then initiate the menu by simply pressing the enter key
16. mm 00 00 02 00 lt CR gt MinMax Log Interval hh mm 02 00 lt CR gt Select Sensor Equation Type 0 0 None 1 scale value offset 0 lt CR gt Current Time 12 32 Enter SAMPLING Start Time hh mm 00 00 12 33 lt CR gt Enter SAMPLING Start Time hh mm 12 33 lt CR gt Current Time 12 32 Enter MinMax Start Time hh mm 00 00 23 55 lt CR gt Enter MinMax Start Time hh mm 23 55 lt CR gt Log slot 0 would then appear as shown in the Sensor Log Table above The Log Enable column will automatically become 1 at 12 33 as requested The user also has the option of activating the slot manually with menu item 4 Toggle Log On Off The operation of the PDAS with respect to Start Time is worth noting In order to facilitate the set up of the PDAS and to verify that logging will take place as anticipated the first log entry occurs within one minute of the specified Start Time regardless of the Logging Rate specified in the Sensor Log Table useful feature allows the user to view a log entry without waiting for the logging interval to expire For example because the user specified a SAMPLING Start Time of 12 33 in the example above the first log entry will occur prior to 12 34 in spite of the fact that the Logging Rate is 15 minutes The result is that field installations are quickened It can be seen that the menu system is user friendly and easy to use The following can be noted from the above transaction e anon
17. the standard auxiliary communications port firmware support for alarm functions and a voltage and temperature module for monitoring maintenance parameters The options are as follows PDAS SDI DELUXE PSE D PDAS SDI firmware support for alarm functions which have the ability of triggering a new logging rate or reading another sensor The user defines a level of hysteresis for each trigger point that is suitable for the sensor in question GOES support for the PDAS SDI auxiliary communications port including comprehensive initialisation and diagnostics routines Pre configured Analog Input Module for monitoring the following maintenance parameters Primary source voltage Lithium battery and internal temperature In addition are 5 single ended inputs with 18 bit resolution and programmable input spans from 25mV up to SVDC both 2 5 amp 5V voltage references and a 250 microAmp constant current source May also be ordered as an external SDI 12 sensor Optional event counters available AMASSER SDI 12 Expansion Terminal strip with 36 screw terminals 75m x 120mm DIN rail mountable 20 SDI 12 sensor support plus cable This is the PDAS SDI with the 4 options listed above Al GOES PAIM and TS DAS Built in shaft encoder for the PDAS SDI Note that this is in fact the AMASS Data PSE SDI incorporated into the same casing It features a resolution of 1 384 of a revolution Ask for the datasheet on the PSE SDI Built in sha
18. 0 is enabled Sensor Command The first character of this string is in fact a flag used to identify whether the sensor is internal SDI 12 or switched SDI 12 O Internal sensor 1 SDI 12 sensor S 12V Switched SDI 12 sensor In the sensor log table above this field is set to I for slot 40 because the slot is occupied by a SDI 12 sensor an external SDI 12 shaft encoder The term Internal sensor applies for instance to the built in shaft encoder which is present when the PDAS SDI is ordered with option PSE or PSE D In this case a 0 appears for the first character of the Sensor Command Note that the internal shaft encoder is set to address A2 and that even an external PSE SDI may be setup as an internal sensor provided it is at that address Refer to 4 2 6 Main Menu System Setup The PDAS SDI also features a switched 12 VDC power port for sensor activation When a sensor is configured to be activated by the switched power port it appears in the sensor log table with a S for the first character of the Sensor Command The remainder of the string is the SDI 12 command that is used to initiate a measurement as well as the addition of an indicator such as 1 or 8 This indicator is used to support the ability of SDI 12 commands to return several parameters and specifies the desired parameter to be logged among those returned The user can for example specify that the seventh parameter be logged by using 7
19. 4 2 1 Main Menu Edit Introduction This is normally done prior to the initialization described in the pages that follow 4 2 6 2 GOES Bristol B697 Transmitter 35 What follows is an example of an initialization of the GOES B697 transmitter with the PDAS in SELF TIMED MODE with the following parameters e Transmission channel 9 e Transmission interval 3 hours e Transmission offset time 57 minutes past midnight GMT e Greenwich Mean Time Offset 4 hours eg transmissions from North Bay on EDST e Mode P Long preamble 1 minute slot size 1 PPM timing pulse 0 lt CR gt NOTE ALL TRANSMISSIONS WILL BE DISABLED Press Enter to Continue ESC to go back lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Alarm Rate Random Mode M Main Menu Esc Back to GOES Main 0 lt CR gt Enter Self Timed Xmtr Channel No 1 199 09 lt CR gt Enter Self Timed Xmtr Channel No 1 199 09 lt CR gt Enter Self Timed Tx Interval hh mm 03 00 lt CR gt Enter Self Timed Tx Interval hh mm 03 00 lt CR gt Enter GMT Offset hh mm 04 00 lt CR gt Enter GMT Offset hh mm 04 00 lt CR gt Enter Transmission Offset Time hh mm 00 57 lt CR gt Enter Transmission Offset Time hh mm 00 57 lt CR gt Enter MODE Character see TABLE 1 P lt CR gt Enter MODE Character see TABLE 1 P lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Alarm Rate Random Mode M Main Menu Esc Back to GOES Main lt ESC gt GOES Bristol M
20. 9 0 973 09 42 59 Log Retrieval by Date Command command LD lt Entry password gt lt DATE of oldest record to be downloaded gt lt CR gt response lt Downloaded data with Header information gt example You wish to download all records that were logged on this day current day is 1998 12 16 LD AMASSER 1998 12 16 lt CR gt AMASS Data Technologies Inc PDAS M 682 Firmware c William P Thomas 1996 97 98 DATE 1998 12 16 TIME 10 25 36 UNIT ID NO 01 SITE DESCRIPTION Utopia 1998 12 16 0 973 00 42 59 HG 0 973 01 42 59 HG 0 973 02 42 59 HG 0 973 03 42 59 HG 0 973 04 42 59 HG 0 973 05 42 59 HG 0 973 06 42 59 HG 0 973 07 42 59 HG 0 973 08 42 59 HG 0 973 09 42 59 If the user had entered LD AMASSER 1998 12 15 lt CR gt the PDAS would download all records that were logged from midnight of December 15 onward 4 4 Direct Communications Commands 44 5 Installation 5 1 Mechanical The AMASSER PDAS loggers may be attached to a flat surface using screws or 10 bolts through the four holes located in the mounting brackets 5 1 1 Shaft Encoder Setup Models which feature the built in shaft encoder PSE and PSE D options only may be used to measure water level For this purpose the unit may be attached to a horizontal or vertical surface in a gauge house with the shaft extending horizontally over the stilling well A pulley is mounted to the unit by means of the aluminum
21. AY AMASS Data Y A Technologies Inc User Reference Manual for Pliant Data Logger Product Line Covers PDAS SDI amp Options Al GOES PAIM PSE PSE D EC Environment Canada version Hardware Revision B Firmware Revision 746 Updated February 19 1999 Web page at http www amassdata com TABLE OF CONTENTS A PDA SD aa edo 3 EDEOPTION Sete cata ans delantero dni A cin ctand ln alos EEE eT ES 5 2 BUILT IN SHAFT ENCODER OPTION PSE cscssssssssscsssssssscsssesssessesssesssesssessscssscessscssscssessscsssesssessoees O 2 1 QUADRATURE ENCODER PRINCIPLE OF OPERATION ccccesessssececeeeeeeseseeessnneecessessneeeeeeeeeesessessaeeeeeeeeeauaaeers 6 22 PSE D DISPLAY OPERATION cierran icon A initial aca 7 3 1 DAS COMMUNICATIONS PROTOCOL ccoocccccnnoccnoncnnoccnnnnoconnorcnnonoronnnnonoronnnnnrrnnoncnnonorrnnnnnrrnnnnnnnrrnnnnarronaccnnananinns 8 32 DEL PROTOCOL llar uln iaa iada 9 3 3 9DIEL2 COMMANDS rain a a Td aia a Et De TE TD Did 9 AL AGETTINE STARTED desatinos 4 2 HOST MENU OPERATION 20555055205 nieto iii ii iii is 4 2 1 Main Menu Edit Introduction ooooocnoononononononononcnononononononnnnnnnnnnnnnononnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnrnnnnnns 422 Mam Mera View Data dicos 4 2 3 Main Menu Sensor Log Setups ca isvisesiesiecisalavisestasiacest a a a A a E Ta ADA Main Menus Los Files nacido io A tes bauee los duke Sov pean con dave as E ESTAT EOT 4 2 5 Main Menu Sensor Alarni Setup
22. G 175 15 0 6280 0 7293 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 Note that the first line is a header providing information with respect to the transmission itself The lines that follow are the data accumulated by the PDAS since the last transmission Here is the first such line as it appears in the example above HG 175 15 0 6280 0 7293 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 Most recent A or serves as a delimiter Oldest reading Data interval 15 Time prior to Tx of the oldest reading 175 min Sensor label Stage level or Gauge height HG The example depicts the stage level HG being recorded at every 15 minutes The first reading in this line 0 6280 was logged 175 minutes prior to transmission that is at 22 02 GMT the previous day The second 0 7293 was logged at 22 17 GMT the third 0 7800 at 22 32 GMT and so on As explained in section 4 2 3 the Sensor Log Table is where the logging schedules are defined In order to accomplish the data collection shown above the Logging Rate would be set to 00 15 and the Sensor Label would be HG From the above we could also conclude that the PDAS logged average values of the stage level given that the data is recorded with four decimal places instantaneous values appear with three Note that lines with single entries are Min Max values Here is the Max reading as it appears above
23. OES buffers if he she wishes by exiting the menu and by typing G lt CR gt where is the sensor slot number of the parameter whose status is desired For instance if the parameter labeled HG occupies slot 0 then exit the menu and type GO lt CR gt as follows G0 lt CR gt 0 6280 0 7293 0 7800 0 7800 which indicates that four readings have been loaded into the PDAS GOES buffer 0 When this buffer is full 96 bytes maximum it is automatically loaded into the GOES transmitter buffer for transmission While reviewing the downloaded data keep in mind that the Logging Rate that appears in the header information at the beginning of every line is the value that was current when the Oldest Reading took place Therefore if the Logging Rate is altered when the GOES buffer is partially complete the change will not be recorded until the next line in the script For instance in the example above the Logging Rate was set to 15 minutes If this had been changed to 10 minutes when four readings had already been loaded into the corresponding GOES buffer the header would nonetheless display an interval of 15minutes HG 175 15 0 6280 0 7293 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 0 7800 j far The readings on the left occurred at 15 minute intervals but the remaining readings were logged at 10 minute intervals In this scenario a second line of readings would appear in the transmission such as HG 40 10
24. S setup refer to the subsections that follow on the appropriate GOES transmitter 0 Communications also allows the user to change the baud rate of the SDI 12 ports from 300 to 19200 Note that the latter is defaulted to the current SDI 12 standard of 1200 baud and that such ability is incorporated simply to accommodate revisions to the protocol and is thus not meant to be changed until such a revision occurs Here again is the System Setup submenu System Setup Functions 0 Communications 1 Internal Sensors 2 View Data Period 3 Transparent SDI Mode 4 Change PASSWORD 5 Erase Log File M Main Menu Select Use item 1 to configure internal sensors as follows INTERNAL SENSOR SETUP 0 Current Encoder Level 1 Encoder Scale 2 Event Cnt 1 Scale 3 Event Cnt 2 Scale 4 Event Cnt Mode 5 Temperature Units M Main Menu 4 2 6 Main Menu System Setup 27 Selections 0 through 4 of this list are used for configuring the built in shaft encoder included with options PSE or PSE D Note that these options refer to a PSE SDI D mounted into the same casing as the logger and set to address A2 and that an external PSE SDI D set to address A2 may also be configured as internal refer to the paragraphs on the Sensor Command in section 4 2 3 Main Menu Sensor Log Setup Conversely the built in shaft encoder must not be changed to an address other than A2 if it is to be configured as internal
25. Sensor Offset xx xxx 0 10 2 lt CR gt Enter Sensor Offset xx xxx 10 2 lt CR gt The values 0 375 and 10 2 would then appear in their respective columns in the sensor log table Note that the value for scale and offset must be within the range 32 767 Adding a switched SDI 12 sensor to the sensor log table is identical as the above except that the user must select S from the list of sensor types and be assured that the sensor is mounted to the switched SDI 12 port The switched port is utilized to conserve energy when using sensors with relatively large power requirements and which do not require to sense a parameter continuously In this configuration the sensor is powered up 100 milliseconds prior to sending a measurement command Upon receiving the response the sensor is turned off Adding an internal sensor to the sensor log table is also similar except that the user is presented with the following list of sensors from which to select SELECT SENSOR 0 Shaft Encoder 1 Event Cnt1 2 Event Cni2 3 Temp Int 4 Temp Ext1 5 Temp Ext2 6 Main Pwr V 7 RTC NiCad V 8 Lithium V 9 Ext Volts 0 20 Items 0 and 2 of this list are available when the PDAS SDI is ordered with option PSE or PSE D Items 3 to 9 of this list are available with the option PAIM Pliant Analog Input Module 4 2 3 Main Menu Sensor Log Setup 18 Here again is the Sensor Log Table submenu SENSOR LOG TABLE 0 Display Log Ta
26. actions 1 0 1A2M0 1 WT No Alarm Functions 2 0 1A1M0 1 HG gt 23 40 do Noactions lt 23 39 do E0 D2 D1 3 0 No Alarm Functions As shown in the Alarm Setup Table above the following actions would take place e Slots 1 and 2 would be enabled when the stage attains the value of 23 40 e Slot 0 would be disabled simultaneously as slot 1 and 2 are enabled e When the stage drops below 23 39 slot 0 becomes enabled as slot 2 and 1 are disabled 4 2 5 Main Menu Sensor Alarm Setup 25 In order for the new logging rate to be carried out when slot 2 is enabled the user must specify sampling and logging rates with the Sensor Log Setup menu item as explained in section 4 2 3 Main Menu Sensor Log Setup For example the Sensor Log Table could look like this Slot Log Sensor Sampling Logging Min Max Offset Scale No Enable Command Label Rate Rate Rate 0 0 1A1M0 1 HG 01 00 00 15 A 02 00 1 0 1A2M0 1 WT 01 00 00 15 A 00 00 2 0 1A1M0 1 HG 01 00 00 05 A 01 00 15 0 00 00 00 00 I 00 00 4 2 6 Main Mau System Setup This selection requires PROGRAM password clearance see section 4 2 Host Menu Operation Item 6 of the main menu displays the following setup options System Setup Functions 0 Communications 1 Internal Sensors 2 View Data Period 3 Transparent SDI Mode 4 Change PASSWORD 5 Erase Log File M Main Menu Use item 0 Communications to configure the communications both landline and telecommunications refe
27. and entering the correct ENTRY password The default ENTRY password is AMASSER yes it is case sensitive Failure to enter the correct password will prevent entry into the menu system as follows the bold lettering represents the program s output whereas the regular font represents the user s input ENTRY password please colombo lt CR gt ENTRY password please amasser lt CR gt ENTRY password please AMASSER lt CR gt After entering the correct ENTRY password introductory information is displayed see 4 2 1 Main Menu Edit Introduction after which the main menu appears The main menu is as follows mm MAIN MENU 1 EDIT INTRODUCTION 2 VIEW DATA 3 SENSOR LOG SETUP 4 LOG FILE 5 SENSOR ALARM SETUP 6 SYSTEM SETUP 7 exit The only options available to the user at this point are items 2 and 4 The other options are only accessible once the PROGRAM password is entered as such Enter PROGRAM Password MODIFY Note that the default password in this case is MODIFY This latest entry gives the user unrestricted access with respect to configuring or modifying any parameters whereas the ENTRY password enables only viewing and downloading of the log file In order to terminate the higher level of access PROGRAM the user must select 7 exit from the main menu The ENTRY password may then be reentered in order to proceed with viewing or downloading data N
28. and slot 0 from the list of sensors as such VIEW SENSOR DATA HG 0 WT 1 Select Log Slot 0 15 0 lt CR gt The print out begins immediately after typing lt CR gt A new line appears at regular intervals and includes the date time sensor label and data For example if the view data period is set to 3 second see Main Menu System Setup the display would be as follows 1997 06 04 11 30 00 HG 1 00 1997 06 04 11 30 03 HG 1 02 1997 06 04 11 30 06 HG 1 02 1997 06 04 11 30 09 HG 1 05 etc To stop the print out simply press lt CR gt Note that these are not values that are being logged as they are displayed but rather sensor data that is transmitted to your terminal as the result of real time polling at a given rate In the example above slot 1 is occupied by parameter WT The user could therefore select 1 to view real time data from that sensor 4 2 3 Main Menu Sensor Log Setup This selection requires PROGRAM password clearance see section 4 2 Host Menu Operation Item 3 of the main menu displays the following sub menu SENSOR LOG TABLE 0 Display Log Table 1 Reset Log Table 2 Add Edit sensor 3 Clear Log Slot 4 Toggle Log On Off 5 Log File Capacity M Main Menu This is where the sensor log setup is done The log table which presents the setup parameters in a tabular format lists the sensors and their corresponding logging parameters such as sampling r
29. asser in the window and select an icon Click OK The steps that follow differ slightly whether the user is connecting via modem or without modem Follow these steps WITHOUT MODEM e In the window labeled Connect using select Direct to com where is your com port connection Click OK e Select a baud rate of 9600 8 data bits no parity bits 1 stop bit no flow control then click OK e Set the font by clicking on View on the menu bar then on Font Select the font Courrier the font style Regular and the size 8 suggested font only Click OK Proceed to OR WITH MODEM e In the window labeled Connect using select the modem of your choice such as Standard Modem or Modem at Com 2 for example e Enter the phone number and area code to be dialed to access the logger then click OK e Click on Modify Click on Configure In the section labeled Maximum Speed select the baud rate to be 9600 e Click on the tab labeled Connection Select 8 data bits no parity bits and 1 stop bit e Click OK Click OK again then finally click on Dial e Once connected the user may which to change the font Click on View on the menu bar then on Font Select the font Courrier the font style Regular and the size 8 suggested font only Click OK Proceed to The terminal window should now appear To have a record of the session the user must e Click on Transfer on the
30. ates and time intervals for both log entries and min max entries This sub menu allows the user to edit the table in various ways Here is an example log table as displayed with item 0 Display Log Table 4 2 2 Main Menu View Data 14 Slot Log Sensor Sampling Logging Min Max Offset Scale No Enable Command Label Rate Rate Rate 0 1 1A1M0 1 HG 01 00 00 15 A 02 00 1 0 1A2M0 11 WT 01 00 00 15 A 00 00 2 0 00 00 00 00 00 00 3 0 00 00 00 00 00 00 4 0 00 00 00 00 00 00 5 0 00 00 00 00 00 00 6 0 00 00 00 00 00 00 7 0 00 00 00 00 00 00 8 0 00 00 00 00 00 00 9 0 00 00 00 00 00 00 10 0 00 00 00 00 00 00 11 0 00 00 00 00 00 00 12 0 00 00 00 00 00 00 13 0 00 00 00 00 00 00 14 0 00 00 00 00 00 00 15 0 00 00 00 00 00 00 Each row of the table is known as a slot numbered from 0 to 15 A sensor must be entered in a slot to be monitored by the data logger and the values entered in each column determine how the sensor is monitored The 16 slots rows allow up to 16 parameters to be monitored by the data logger The function of each column is as follows Slot No This is just an index for the 16 slots When using the View Data function the slot number is requested to determine which of the sensors is to be viewed Log Enable This flag determines whether the current slot is active or not 1 Logging is active enabled 0 Logging is inactive In the sensor log table above slot
31. back on PASSWORD will display the default value namely 000 which must be edited once again to obtain access Never forget your password otherwise you will not be able to change the setup parameters from the display at a later date In the event that it is forgotten contact AMASS Data Technologies Inc When the correct password is entered use set On then select to view the parameter labels in turn offset scale node address scale of event counter 1 scale of event counter 2 and event counter mode Use 2 Built in Shaft Encoder Option PSE set on to view the current value of any one of these parameters For instance to display the value of the encoder scale use select until the word scale appears then trigger set on If you then wish to change its value from say 0 375 m to 0 375 m because of the direction of shaft rotation see 3 3 2 Set Encoder Scale of the PSE SDI user manual use the EDIT switch Note that the left most character the sign is flashing The up arrow edit switch can now be used to obtain the character that you require i e the sign The value that now appears is 0 375 and it may be entered by using the set on switch If the remaining digits had to be changed one would use the right arrow edit switch to shift the active position on the display from left to right For example if the offset is to be changed from 0 000 to 10 123 use the right arrow to edit each digit in turn from left t
32. ble 1 Reset Log Table 2 Add Edit sensor 3 Clear Log Slot 4 Toggle Log On Off 5 Log File Capacity M Main Menu Items 1 3 and 4 are straightforward Item 1 Reset Log Table resets the entire log table item 3 Clear Log Slot clears a log slot for future use and item 4 Toggle Log On Off allows the user to activate or inactivate an occupied slot Item 5 Log File Capacity is very useful for sensor setup and log file management It determines the storage capacity in days based on the sensor setup as it appears in the Sensor Log Table It also indicates the percentage of storage space remaining This would be a typical display with item 5 5 lt CR gt LOG FILE CAPACITY Storage Capacity 32768 records Storage Capacity 11 66 days Storage Remaining 25 59 This would indicate that the current sensor setup would allow 11 66 days of data acquisition before the memory would be full assuming the log file was empty Since there is currently 25 59 of the storage remaining the memory should endure for 2 98 days Note that although the log file capacity results are determined based on the current sensor setup they are irrespective of whether the slots are active or not The actual endurance therefore will be equal or greater than that displayed 4 2 3 Main Menu Sensor Log Setup 19 Given that the logging patterns are impossible to predict for models with alarm functions the results ac
33. clamping assembly which is threaded to the shaft The clamping assembly accepts standard L amp S or F amp P pulleys Any model may be used to indicate the position of any shaft which can be coupled or geared to the encoder shaft With suitable mechanical coupling linear positions may also be measured For more information on the physical characteristics of the PDAS product line refer to Specifications The sensor may be installed in any orientation that a particular application may require Weights or other mechanical loads at right angles to the shaft centre line should not exceed 10 Ib 4 5 kg Larger loads will distort the bearings increase the starting torque and decrease the bearing life 5 2 Electrical PDAS products are internally protected against transient voltages and lightning surges on the signal input lines However IT IS ESSENTIAL TO PROVIDE PRIMARY EXTERNAL LIGHTNING PROTECTION 5 3 Connectors All models have the following 1 9 pin DB9S comm connector for serial RS 232 communications to your computer 1 9 pin AMP CPC connector for SDI 12 ports and 12 VDC power input 1 9 pin DBOP auxiliary comm port for modem or GOES GOES option only connection WARNING The auxiliary port must be configured for GOES prior to connecting the transmitter Unless ordered otherwise the default configuration for the auxiliary port is for MODEM use Optional connector 1 28 pin AMP CPC for models with option PAIM see Options 1 9
34. e event counter is cleared upon sampling If the count exceeds the 16 bit maximum 65536 prior to sampling it overflows to 0 and starts over OVERFLOW Otherwise known as roll over in this mode the event counter is cumulative When the count exceeds the 16 bit maximum 65767 it overflows to O and starts over PULSE In this mode the event counters are set to count pulses The maximum frequency is 5 kHz SWITCH CLOSURE In this mode the event counters are set to count switch closures and accommodate moderately noisy signals which are typical of switch closures The minimal period of the closure is 20 msec APPENDIX D MODE CODES FOR EVENT COUNTERS 51
35. e no mechanical contacts involved in the measurement process the only contacting moving parts are the precision shaft bearings The starting torque is low 0 65 inch oz 47 cm g or less and the system is not sensitive to vibration It is tested to operate from 40C to 55C and up to 100 relative humidity 2 1 Quadrature Encoder Principle of Operation The on board microcontroller and firmware follows the shaft rotation each transition of either of the quadrature inputs adds or subtracts a count to a 16 bit stored value representing the position of the shaft and therefore the fluid level A set up parameter called scale is provided to allow the application of a standard circumference pulley and tape so that the accumulated count represents an accurate fluid level If using a 375mm circumference pulley for instance the accumulated count would directly indicate a fluid level in metres by setting the scale 0 375 The output from the microprocessor is the ASCII code representation calculated to three decimal places and is equal to the position value stored in the internal register divided by 384 Model K encoder The output will be a decimal value in the range 999 999 units The encoder s scale and offset are set using the menu system described in Host Software Operation For example if you are using a 375mm circumference pulley and you wish to measure the stage in metres above sea level you would enter a scale of 0 375 and an offs
36. elect the parameter to be edited i e Node Adr use set on to view its current value use the EDIT switch as required then enter the value using set on Given that ten SDI 12 devices may be supported on a given bus the node addresses are numbered from 0 to 9 The display comprises an auto power off feature It switches the display off following an inactive period of approximately 5 minutes in order to save energy Note that although the built in shaft encoder consumes as little as 2 5 mA when the display is off the current consumption is about 90 mA when it is on 3 Bus Protocol 3 1 DAS Communications Protocol All information that is relayed between the user and PDAS loggers is accomplished by means of the DAS communications protocol This protocol results in messages being transferred in a RS232 data stream and uses relaxed timing and no break handling Each command or response is simply terminated with the carriage return character When operating the PDAS however the details of the protocol are far removed from the user as this product is menu driven which allows one to interact in a user friendly manner without having to be concerned with details such as command syntax In order to communicate directly with SDI 12 sensors from the host i e the SDI 12 transparent mode the SDI 12 commands are basically encapsulated into the DAS protocol 3 Bus Protocol 3 2 SDI 12 Protocol The two SDI 12 ports on the PDAS loggers wh
37. erefore equal to 7 X 4096 lt Total number of records lt 32768 Also Records Used 32768 16385 15000 31383 as in the previous example If the buffer has yet to roll over for the first time selection O Status would be as follows 0 lt CR gt Storage Capacity 32768 Records Used 15000 Current reading 15000 Oldest reading 0 Error Flag 0 Selection 1 Retrieve No of records is as follows 1 lt CR gt UPLOAD Number of Records xxxx 16 lt CR gt AMASS Data Technologies Inc PDAS M 682 Firmware c William P Thomas 1996 97 98 DATE 1998 12 14 TIME 16 52 32 UNIT ID NO T359478 SITE DESCRIPTION BILL S HOBBIT HOLE 1998 12 14 HG 0 000 15 06 56 HG 0 000 15 06 56 HG 0 0000 15 07 55 WT 0 0000 15 21 55 HG 0 0000 15 22 55 WT 0 0000 15 36 55 HG 0 0000 15 37 55 WT 0 0000 15 51 55 HG 0 0000 15 52 55 WT 0 0000 16 06 55 HG 0 0000 16 07 55 WT 0 0000 16 21 55 HG 0 0000 16 22 55 WT 0 0000 16 36 55 HG 0 0000 16 37 55 WT 0 0000 16 51 55 Note that this is the format labeled Sequential in RESO KM 054 6 6084 Each log entry comprises the sensor label the data and the time with each data field being 10 columns wide Also note that the retrieved data is in chronological order and that the entries are the most recent in the log file Finally note that these log entries correspond to the log table displayed in section Main Menu Sensor Log Setup data of
38. et equal to the stage level above sea level at setup time If the measured stage is 101 225 metres above sea level at setup time you would enter an offset of 101 225 and the unit will now track your stage in meters above sea level 2 Built in Shaft Encoder Option PSE 2 2 PSE D Display Operation The 8 digit display and two double position switches control the display and setup of parameters of the built in shaft encoder The setup parameters are only accessible however once the correct password has been entered The front of the unit appears as in Fig 1 123 456 4 Select Selection switch 8 Digit Display EDIT switch 9 pin connector Fig 1 Front view of built in display The four switch positions allow the user to display the current fluid level and event as well as setup the following parameters the encoder offset and scale the scale and mode of the event counters and the node address for SDI 12 communications The right switch is used to select the parameter to be displayed and or altered It is also used as an enter key to set the new values of setup parameters and as an on switch for the display The left switch allows the user to EDIT the value displayed at the screen The lower position of this switch is labeled with a right arrow and is used to select the digit that is to be edited the active digit is the one flashing on the screen The upper position which is labeled with an up arrow edits the ac
39. ft encoder for the PDAS SDI Note that this is in fact the AMASS Data PSE SDI D Ev incorporated into the same casing It features a resolution of 1 384 of a revolution an 8 digit display and two operator interface switches Ask for the datasheet on the PSE SDI D Ev 1 2 Options 2 Built in Shaft Encoder Option PSE The built in shaft encoder i e option PSE D or PSE is in fact the AMASS PSE SDI or PSE SDI D Ev for option PSE D incorporated into the same casing The PSE SDI D features a display and double position switches which enable the user to operate as well as setup the shaft encoder for use For complete details of this sensor please refer to the datasheet for the PSE SDI D Note that the shaft encoder without display can be ordered with the option PSE The resolution of the encoder is 1 384th of a revolution minimum when used as a stream stage indicator with a 375 mm circumference pulley the resolution of the system is 0 98 mm Itis a two channel optical incremental encoder that contains a lensed LED source integrated detectors and a codewheel which rotates between the emitter and the detector The PSE SDI D Ev firmware provides pulsed LED driver and an adaptive signal transition detector to provide the 4x quadrature decoder function This technique in conjunction with idle power down mode of the processor drops the encoder s current consumption from 45 milliamps to 2 3 milliamps A HUGE power savings There ar
40. he character need not be appended to the command as this will be done by the logger if it is omitted by the user When communicating with sensors the PDAS SDI will display an error message in the event that a proper response was not received Refer to APPENDIX A for a listing of these error messages The SDI 12 transparent mode session is terminated by simply pressing lt CR gt Use item 4 for changing the password Item 5 allows one to delete the entire log file the user is prompted for confirmation before deletion takes place 4 2 6 Main Menu System Setup 28 4 2 6 1 GOES TGT 1 Transmitter 4 2 6 1 A INITIALIZATION For models with GOES support for the TGT 1 transmitter the System Setup submenu allows the user to initialize as well as diagnose refer to 4 2 6 1 b Diagnostics the GOES system Apart from setting the transmitter clock and the GOES platform address refer to 4 2 1 Main Menu Edit Introduction all configurations are performed as described below By selecting item 0 Communications from System Setup the user is presented with the option of configuring the GOES system via the auxiliary communications port 0 lt CR gt Select Communications Port 0 Programmer Port 1 GOES Telonics TGT 1 2 SDI 12 Ports A amp B 1 lt CR gt GOES Transmitter TGT 1 i 0 Initialization a GOES main menu 1 Diagnostics 2 Enable Self timed Transmissions 3 Enable Random Transmissions 4 Enable Both Xmit
41. hieved from the Log File Capacity function may in fact be very different from the actual endurance for these models Even in this case however the results are useful for determining the absolute minimum endurance that might transpire 4 2 4 Main Menu Log File Item 4 LOG FILE of the main menu is used to access the log file The user is prompted with the following options Log File Functions 0 Status 1 Retrieve No of records 2 Retrieve from date M Main menu The log file is viewed with either item 1 or 2 Item 1 Retrieve No of records prompts the user for the number of records that he she wishes to retrieve i e display whereas item 2 Retrieve from date prompts the user for a date from which all records will be retrieved up to and including that day In order to determine the total number of log entries made as well as the amount of free memory use the status option It is reasonable therefore to verify the status of the log file with item 0 before retrieving with either item 1 or De Note that if the user wishes to delete the Log file note that this is not normally required since the PDAS uses a circular buffer he she uses the System Setup submenu see Main Menu System Setup Selection 0 Status would be as follows 0 lt CR gt Storage Capacity 32768 Records Used 31383 Current reading 15000 Oldest reading 16385 Error Flag 0 This indicates that logg
42. ich are labeled Channel A and B provide support for up to 20 SDI 12 sensors Any communication between an SDI 12 sensor and the PDAS must employ the SDI 12 protocol Any communication between an SDI 12 sensor and the host PC must employ in transparent mode the SDI 12 protocol The transparent mode allows the user to send and receive SDI 12 messages via the DAS protocol by encapsulating the SDI 12 string into the RS 232 data stream SDI 12 sensors may be monitored and logged as well as accessed for immediate and real time data If the user wishes to access the sensors for real time data he she must enter transparent mode as explained in 4 2 6 Main Menu System Setup In order to monitor and log data from sensors the user must assign them to slots in the sensor log table as explained in 4 2 3 Main Menu Sensor Log Setup In the case of SDI 12 sensors the logger sends the appropriate SDI 12 command to initiate a measurement and automatically performs any breaks D commands retries etc as required by the SDI 12 protocol It then logs the value that it retrieved into the log file What follows is an overview of the SDI 12 protocol For detailed information on SDI 12 protocol visit the SDI 12 Support Group s web site via our home page at http www amassdata com In order to initiate communication with an SDI 12 sensor the controller sends a break signal which consists of sending a spacing signal 5 V for more than 12
43. ing is currently taking place in sector 4 of the flash memory explained below that no error has occurred and that the memory has rolled over at least once The PDAS uses a circular buffer with 8 sectors for logging data so that when the flash is full logging takes place over old records The 8 sectors of the flash memory are of equal size 4096 records and are as follows Sector 1 Sector 2 Sector 3 Sector 4 Sector 5 Sector 6 Sector 7 Sector 8 1 to 4097 to 8193 to 12289 to 16385 to 20481 to 24577 to 28673 to 4096 8192 12288 16384 20480 24576 28672 32768 The non volatile flash always contains the most recent records a maximum of 32768 The Oldest reading is in fact the LOCATION of the oldest reading within the Log file which in the example above is the first record of sector 5 In fact it is always the first record of a sector with the exception of a Log file which has yet to roll over for the first time given that the PDAS clears all 4096 records present in a sector prior to logging the first record therein The Current reading is in fact the LOCATION where the last log entry took place which in the previous example was 15000 that is somewhere in sector 4 Therefore the values of both Oldest reading and Current reading determine where logging is taking place within the Flash memory 4 2 4 Main Menu Log file 20 The total number of records in the flash at any given time if the buffer has rolled over at least once is th
44. into the log file at a rate indicated for Min Max Rate Offset and Scale The offset and scale are only invoked when the user selects the application of a linear transformation for the conversion of raw data see below These columns are left blank if they are not applicable These values are expressed in the engineering units that you wish the sensor output to represent Sensors are added to the sensor table with menu item 2 Add Edit sensor For example if the user wishes to enter the AMASSER PSE SDI Shaft Encoder into log slot 0 as shown in the table above he she would typically do as follows 2 lt CR gt Select Log Slot 0 15 0 lt CR gt SELECT SENSOR TYPE 0 Internal Sensor 1 SDI 12 Sensor S 12V Switched SDI 12 Sensor 1 lt CR gt Enter SDI 12 Port amp Address A 0 9 or B 0 9 A1 lt CR gt Enter SDI 12 Port amp Address A 0 9 or B 0 9 Al lt CR gt Enter SDI 12 Command M 0 9 or R 0 9 or C 0 9 MO0 lt CR gt Enter SDI 12 Command M 0 9 or R 0 9 or C 0 9 MO lt CR gt Enter Value Position 1 9 0 Enter Value Position 1 9 1 lt CR gt Sensor label HG lt CR gt Sensor label HG lt CR gt Sampling Interval mm ss 00 00 01 00 lt CR gt Sampling Interval mm ss 01 00 lt CR gt Logging Interval hh mm 00 00 00 15 lt CR gt Logging Interval hh mm 00 15 lt CR gt Select Log Data Type 0 0 Instantaneous 1 Averaged 1 lt CR gt 4 2 3 Main Menu Sensor Log Setup 16 MinMax Log Interval hh
45. king operating system kernel capable of providing both a time and event driven environment in which data is collected processed logged and distributed across multiple mediums reliably This firmware also uses the power saving support of both the idle and power down modes available on the processor to allow savings in both the size and the price of the power source equipment needed to run your requirements This environment supports multiple tasks executing on a single processor and prevents problems such as loss of data or loss of communications when two or more events occur in the same time frame 1 1 PDAS SDI The following summarizes the features of our base logger the PDAS SDI Hardware Features e 2 master SDI 12 Serial Digital Interface 20 sensor support ports labeled Channel A and B e One switched 12VDC power port for sensor activation 100 msec prior to sampling e RS 232 Programming Port programmable from 300 to 19200 baud e Auxiliary communications port with modem support 300 to 19200 baud e 1 Mbyte Non Volatile Flash memory Log File providing 32 768 records 32 byte records e Event amp time based data acquisition with a multi tasking OS e Low power consumption through the use of power down mode e Lithium battery back up for 32 kbyte RAM e Real Time Clock for date time stamping of instantaneous averaged and min max values 1 AMASSER PDAS 1 1 PDAS SDI Firmware Support Providing Sensor Log Set up Table with 16 sensor slo
46. led ONLY IF the stage increases beyond the values of both LOWER AND UPPER Trip Value gt Slot 1 will be disabled ONLY IF the stage decreases below the values of both UPPER AND LOWER Trip Value 4 2 5 Main Menu Sensor Alarm Setup 24 Trigger point Trigger point STAGE UPPER trip value 23 40 LOWER trip value 23 39 Duration of slot 1 start Tap start TIME Fig 1 Implementation of UPPER and LOWER trip values The alarm functionality of the PDAS loggers is in fact quite powerful When configuring even the simplest of alarms however it is important to ask the following questions e Under what conditions do I desire to begin monitoring this parameter e Once triggered when do I want to stop monitoring this parameter e Do I want to maintain the slot which serves as a trigger e If not under what conditions if any do I desire to reinitiate the slot which served as a trigger For example if the water level is being monitored as in slot 0 above it may be desirable to increase the logging rate when the stage attains 23 40 In this case it is necessary to enable a new slot which will include the same Sensor Command and Sensor Label see section 4 2 3 Main Menu Sensor Log Setup and simultaneously disable the current slot slot 0 The Alarm Setup Table would be as follows Slot Log Sensor UPPER Actions LOWER Actions No Enable Command Label Trip Value Trip Value 0 0 1A1M0 1 HG gt 23 40 do E1 E2 D0 lt 23 39 do No
47. lowing formula to determine the approximate percentage of power reflected as explained in the reference manual of the Telonics TGT 1 transmitter POWER REFLECTED RELEE Pa 100 FWD 17 4 7 28 174 100 145 17 4 POWER REFLECTED 6 82 4 2 6 1 GOES TGT 1 Transmitter Diagnostics 33 Select 4 Error Status as follows 4 lt CR gt Error Status 01 1f 03 00 00 00 00 00 00 Most recent Total error count Which indicates that one error occurred with a command code of If and error code of 03 The error file stores the four most recent errors that occurred with the transmitter For an explanation of the command and error codes please refer to page 1 4 and 2 8 of the TGT 1 user s reference manual Select 5 Reset Error Counter to clear the error file Select 6 Tx Buffer Status as follows 6 lt CR gt Select GOES Buffer 0 Self timed Buffer 1 Random Buffer 0 lt CR gt Current Buffer Size bytes 150 Which indicates that the GOES buffer currently contains 150 bytes As explained in the TGT 1 manual although the Self Timed and Random buffers are 2048 bytes each the maximum amount of data per Self Timed transmission is between 515 and 1344 bytes and is a function of Window Length and Preamble type as shown in Table 1 6 of that manual 4 2 6 1 GOES TGT 1 Transmitter Diagnostics 34 4 2 6 2 GOES Bristol B697 4 2 6 2 A INITIALIZATION For models with support for Bristol B697 GOES transmitter
48. millisec This will wake all sensors connected to the line The controller then sends an SDI 12 command The format of each byte of data is 1 start bit 7 data bits with the least significant bit first 1 parity bit with even parity and 1 stop bit The first significant byte of any message is the address of the sensor all sensors with different addresses return to the sleep state and ignore the rest of the command The last character of a command is always and the controller turns off its transmitter within 7 5 millisec after sending the The sensor responds by setting the data line to marking 0 V for 8 33 millisec and then begins its response The first bit of the response must be sent within 15 millisec of receiving the last byte of the command Any SDI 12 device may be connected to the SDI 12 ports For example with the AMASSER PSE SDI Shaft Encoder the current value of the water level stream stage or other quantity being measured may be retrieved by sending a start measurement command that is aMO The PSE SDI maintains in its memory a number which represents the current water level so that upon receiving the Measure aMO command from the PDAS SDI it transfers this value to the output buffer in the required ASCII format based on the offset and scale parameters and upon receiving the Send Data aDO command the value from the output buffer is returned to the controller 3 3 SDI 12 Commands As detailed in the secti
49. n Pulse only amp Alarm random amp 0 short 0 1 min 1 1 PPS rate random Alarm rate 0 1 PPM random 0 0 0 1 0 0 B 0 0 0 0 1 0 C 0 0 0 0 0 1 D 0 0 1 1 0 0 F 0 0 1 0 1 0 G 0 0 1 0 0 1 H 0 1 0 1 0 0 J 0 1 0 0 1 0 K 0 1 0 0 0 1 IL 0 1 1 1 0 0 N 0 1 1 0 1 0 O 0 1 1 0 0 1 P 1 0 0 1 0 0 R 1 0 0 0 1 0 S 1 0 0 0 0 1 T 1 0 1 1 0 0 Vv 1 0 1 0 1 0 W 1 0 1 0 0 1 X 1 1 0 1 0 0 Z 1 1 0 0 1 0 1 1 0 0 0 1 lt 1 1 1 1 0 0 gt 1 1 1 0 1 0 Y 1 1 1 0 0 1 APPENDIX B GOES BRISTOL B697 MODE TABLE 49 APPENDIX C PSE Shaft Encoder Commands Retrieve Data Commands 1 10 11 12 Get encoder value in scaled units e command aM aMO aC or aCO e response a0001 lt cr gt lt If gt data buf lt encoder value gt Get minimum or maximum values e command aM1 or aC1 maximum aM2 or aC2 minimum e response a0001 lt cr gt lt lf gt data buf lt min gt or lt max gt Start verification command e command aV or aVO e response a lt data buffer 1 gt lt data buffer 2 gt lt data buffer 3 gt lt cr gt lt lf gt Get event counter values e command aM3 or aC3 event counter 1 aM4 or aC4 event counter 2 e response a0001 lt cr gt lt If gt data buf lt event count 1 gt or lt event count 2 gt Return data buffer e command aD or aDO Response a lt data buffer gt lt cr gt lt lf gt Read encoder value in scaled units e command aR or aRO Response a lt data buffer gt lt cr gt lt
50. nu 4 2 6 2 GOES Bristol B697 Transmitter 37 4 2 6 2 B DIAGNOSTICS The user selects 1 Diagnostics in order to determine if the Bristol transmitter is armed for transmission if the GOES clock is set correctly and to determine the time to elapse for the next transmission to take place A diagnostic should always be performed following initialization of the transmitter From the System Setup submenu the user proceeds as follows 0 lt CR gt Select Communications Port 0 Programmer Port 1 GOES Bristol 697 07 2 SDI 12 Ports A amp B 1 lt CR gt GOES Bristol Model 697 GOES main menu 0 Initialization e 1 Diagnostics 2 ARM The Transmitter 3 Append String to GOES Buffer M Main Menu 1 lt CR gt GOES DIAGNOSTICS we GOES diagnostics menu 0 Current Status 1 Current GOES Time hh mm ss 2 Time to Next Tx M Main Menu Selection of 0 Current Status from the Diagnostics menu 0 lt CR gt GOES Address 12345678 Self Tmd Channel No 09 Self Tmd Tx Interval 03 00 Offset Time 00 57 Random Channel No 96 Random Tx Interval 91 00 Operational MODE P Goes Data Collection Enabled The values as shown above represent the current configuration of the transmitter as stored in the logger The B697 transmitter does not allow such values to be read therefore when the user selects 0 Initialization and configures the transmitter the PDAS stores these values locally so that they may be displayed with
51. nu Operation 12 4 2 1 Main Menu Edit Introduction This selection requires PROGRAM password clearance see section 4 2 Host Menu Operation When the menu is initiated the introduction displays the product name and author as well as the current date and time unit ID number site description as well as GMT time and GOES platform address for units equipped with GOES support see below This information is stored in the RAM which is safeguarded by the Lithium battery The user may alter these parameters not the product name and author of course by selecting item 1 EDIT INTRODUCTION of the main menu Doing this prompts the user for a new entry by displaying the current value of each parameter in turn You may respond by typing a new value or by simply pressing the enter key to leave the current value unchanged For example if the date and time are to be set the user would select 1 EDIT INTRODUCTION from the main menu and interact in the following manner DATE 1997 06 03 1997 06 04 lt CR gt DATE 1997 06 04 lt CR gt TIME 11 42 34 11 43 34 lt CR gt TIME 11 43 34 lt CR gt UNIT ID NO T35947857511030 lt CR gt SITE DESCRIPTION STATION 23 lt CR gt Where lt CR gt is the enter key Note that changes are confirmed by echoing the new value the bold lettering represents the program s output whereas the regular font represents the user s input Values that are to be left unchanged are not echoed
52. o right From the above it will be noted that the operation of this display is very simple and practical Itis a good practice however to review the values following a setup session in order to be assured that they were entered properly In particular it should be noted that when entering values for the offset and scale the decimal point must be entered as these parameters are floating point variables The or sign must also be entered for these parameters For instance a scale of 1 000 may be entered as 1 but not as 1 1 or 1 Use set on repetitively to review the list of parameters and their respective values As noted the value of a parameter is displayed and entered using set on If the value that is displayed 1s correct it may be left unaltered by simply reentering it using set on On the other hand any changes made to a value that has not yet been saved may be disregarded by using select The built in shaft encoder is an SDI 12 device and as such allows all of the above to be accomplished via communication with a DCP or portable computer see 3 0 SDI 12 AMASSER SE Sensor Commands of the PSE SDI user manual In addition the SDI 12 also allows you to obtain minimum maximum encoder data a feature not incorporated on the display The node address by which SDI 12 communication takes place is among the parameters that may be set on the display This is done in the same manner as with the other parameters s
53. o the internet through your local ISP proceed as follows if using Windows 95 e Click on Start then Run e Type telnet 128 154 62 173 and click OK Now wait a moment until the DAPS prompt appears the telnet connection has been successful Enter your username and password When the correct username and password has been accepted the user may enter the proper command for the downloading of data Prior to doing so however the user must begin logging the Telnet session so that the downloading of data is captured e Click on Terminal on the menu bar then on Start Logging e Select a folder and filename for the capture file e click Open Now assuming a platform number of 48161450 the user would type the following command at the prompt gt DOWNLOAD MSG ID_PLATFORM 48161450 lt CR gt gt BEGIN DOWNLOAD Y N gt Y lt CR gt Once the data is downloaded the user stops logging the Telnet session as follows e Click Terminal then Stop Logging Now disconnect from the DAPS system by typing BYE 4 3 GOES Data Retrieval 40 4 3 1 GOES Data Interpretation Here is an example of data as downloaded from the DAPS system Platform ID Date of transmission year 1998 day 295 Time of transmission 00 57 GMT e i Transmission strength information aes 4816145098295005722G50 ONNOO9EFF00145 lt _ ine is Header HG 170 180 0 780 Single data are Min Max entries HG 285 180 0 628 H
54. odel 697 0 Initialization a O 1 Diagnostics 2 ARM The Transmitter 3 Append String to GOES Buffer M Main Menu The user must now ARM The Transmitter and enter the Diagnostics menu to determine if the configuration is as intended To determine the proper MODE for the B697 please refer to APPENDIX B Note that the user pressed the lt ESC gt key to return to the GOES main menu 4 2 6 2 GOES Bristol B697 Transmitter 36 What follows is an example of an initialization of the GOES B697 transmitter with the PDAS in RANDOM MODE vith the following parameters e Transmission channel 4 e An alarm rate random interval 15 minutes 0 lt CR gt NOTE ALL TRANSMISSIONS WILL BE DISABLED Press Enter to Continue ESC to go back lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Alarm Rate Random Mode M Main Menu Esc Back to GOES Main 1 lt CR gt Enter Random Xmir Channel No 1 199 04 lt CR gt Enter Random Xmir Channel No 1 199 04 lt CR gt Enter Alarm Rate Random Interval hh mm 00 00 00 15 lt CR gt Enter Alarm Rate Random Interval hh mm 00 15 lt CR gt GOES INITIALIZATION 0 Self timed Mode 1 Alarm Rate Random Mode M Main Menu Esc Back to GOES Main lt ESC gt GOES Bristol Model 697 GOES main menu 0 Initialization e 1 Diagnostics 2 ARM The Transmitter 3 Append String to GOES Buffer M Main Menu Note that by pressing the lt ESC gt key the user returned to the GOES main me
55. on 4 2 3 Main Menu Sensor Log Setup in order for the PDAS SDI to log data from an SDI 12 sensor the user must enter the proper command for the sensor command in the sensor log table Refer to the user manual of the SDI 12 sensor to obtain the command that is to be used The menu system also allows the user to enter manual SDI 12 transparent mode In this mode any SDI 12 command may be sent manually for interrogation and retrieval of real time data from sensors mounted to the SDI 12 ports provided that the command is supported by the sensor in question Refer to section 4 2 6 Main Menu System Setup for details on this feature of the PDAS SDI When communicating with sensors the PDAS SDI will display an error message in the event that a proper response was not received Refer to APP A for a listing of these error messages 3 Bus Protocol 4 Operation 4 1 Getting Started As mentioned in the introduction to this manual the PDAS SDI does not have host OS requirements All that is required is a dumb terminal emulator with capture capability What follows is the procedure for initiating a dumb terminal emulator with Windows 95 Updated Edition as this is the most commonly used OS on the market at this time A similar procedure can be accomplished on any other OS that allows the user to run a dumb terminal emulator e Click on Start then go to Programs gt Accessories then click on HyperTerminal e Click on the Hypertrm icon e Type the name am
56. ontents of the PDAS GOES buffer is shown NOT the transmitter buffer itself As explained in 4 3 1 GOES Data Interpretation GOES equipped loggers use 16 separate buffers which correspond to the 16 sensor slots These GOES buffers acquire data at a rate defined by Logging Rate in the Sensor Log Table Once any given one of the 16 GOES buffers is filled to its 96 byte capacity it is flushed into the transmitter buffer The remaining commands are most useful when accessing the logger using a computer with a dial up program which will automatically send and receive data in order to download the log file If such is the case the host computer need not enter the menu system but rather utilize the following Direct Communications Commands Log Status Command command LS lt CR gt response lt Log File Status gt example LS lt CR gt Storage Capacity 32768 Current Record 4140 Oldest Record 0 Error Flag 0 4 4 Direct Communications Commands 43 Log Retrieval by Number Command command LR lt Entry password gt lt number of records to be downloaded gt lt CR gt response lt Downloaded data with Header information gt example You wish to download 4 records LR AMASSER 4 lt CR gt AMASS Data Technologies Inc PDAS M 682 Firmware c William P Thomas 1996 97 98 DATE 1998 12 16 TIME 10 25 36 UNIT ID NO 01 SITE DESCRIPTION Utopia 1998 12 16 0 973 06 42 59 0 973 07 42 59 HG 0 973 08 42 5
57. ote that to change the password the user must select item 6 as described in section 4 2 6 Main Menu System Setup 4 2 Host Menu Operation 11 Each of the options of the main menu presents a sub menu to perform desired actions which are described in more detail in the following sections Item 1 EDIT INTRODUCTION allows the user to set the date time unit identification number site description as well as the GOES clock and platform address for units equipped with GOES support With item 2 VIEW DATA the user can view the instantaneous value of sensor data in real time For example the instantaneous shaft position of an encoder or the current internal temperature may be displayed Item 3 SENSOR LOG SETUP is used to setup the sensor log assigning sensors to log slots setting sampling rates and time intervals for both log entries and min max entries Item 4 LOG FILE allows the user to access the log file with a sub menu to retrieve or erase entries Item 5 SENSOR ALARM SETUP is used to configure alarms Item 6 SYSTEM SETUP is for communications and sensor parameters such as configuring the PDAS for GOES operation The menu system also features a communications watchdog The watchdog provides added security in the event that a user forgets to properly exit the menu system It uses a delay of about 5 minutes so that the user is automatically exited from the menu if he she has not made an entry in that period of time 4 2 Host Me
58. ounters is normally set from within the menu system with Internal Sensors under the System Setup submenu For event counters that are not internal the user must use the SDI 12 Transparent Mode from within the System Setup submenu For example a PSE SDI set to address 3 channel A would require the following command as shown in APPENDIX C to set the mode to 6 A3S2 6 Mode code EC2 R R or EC 2 Pulse or EC1 R R or EC 1 Pulse or Overflow Switch Overflow Switch 0 Overflow 0 Switch Closure 0 Overflow 0 Switch Closure 0 1 Overflow 0 Switch Closure 0 Overflow 0 Pulse 1 2 Overflow 0 Switch Closure 0 Read Reset 1 Switch Closure 0 3 Overflow 0 Switch Closure 0 Read Reset 1 Pulse 1 4 Overflow 0 Pulse 1 Overflow 0 Switch Closure 0 5 Overflow 0 Pulse 1 Overflow 0 Pulse 1 6 Overflow 0 Pulse 1 Read Reset 1 Switch Closure 0 7 Overflow 0 Pulse 1 Read Reset 1 Pulse 1 8 Read Reset 1 Switch Closure 0 Overflow 0 Switch Closure 0 9 Read Reset 1 Switch Closure 0 Overflow 0 Pulse 1 10 Read Reset 1 Switch Closure 0 Read Reset 1 Switch Closure 0 11 Read Reset 1 Switch Closure 0 Read Reset 1 Pulse 1 12 Read Reset 1 Pulse 1 Overflow 0 Switch Closure 0 13 Read Reset 1 Pulse 1 Overflow 0 Pulse 1 14 Read Reset 1 Pulse 1 Read Reset 1 Switch Closure 0 15 Read Reset 1 Pulse 1 Read Reset 1 Pulse 1 R R stands for Read Reset In this mode th
59. ounting brackets Standard height 5mm 0 2 in The above information is believed to be true at the time of printing AMASS Data Technologies Inc reserves the right to modify specifications without notice All trademarks are owned by their respective companies AMASS Data Technologies Inc 34 Chemin Helene Val des Monts QUEBEC J8N 2L7 TEL 819 457 4926 FAX 819 457 9802 Email amassinfO amassdata com Web page at http www amassdata com 6 Specifications 47 APPENDIX A COMMUNICATIONS ERROR MESSAGES While communicating with the PDAS SDI via a direct connection or modem the following messages may be displayed Note that the PDAS SDI is multi tasking and that the SDI 12 communications and data logging take precedence over RS232 SDI 12 Communications Error Messages ERROR NUMBER MEANING 1 Timeout waiting for address of initial response 2 Timeout waiting for address following DO command 3 Character timeout DO Response string 4 Character timeout Initial Response string Nn Waiting for Tx to finish APPENDIX A COMMUNICATIONS ERROR MESSAGES 48 APPENDIX B GOES Bristol B697 Mode Table When initializing the B697 transmitter the user specifies its operating parameters using a mode number The following mode table can be found in the original user s manual of the B697 and has been transcribed here for added convenience ASCII char Preamble Slot size Timing Self timed Self timed Regular MODE 1 long 1 2 mi
60. pin AMP CPC connector for 2 event counters PSE D option 5 Installation 45 Connections for the standard 9 pin AMP CPC SDI 12 connector are as follows SIGNAL PIN Cable Color 12 Vin 1 Red Switched 12VDC 2 Blue Ground 3 Black SDI 12 Data A 4 White SDI 12 Data B 5 Green none 6 Brown none 7 none none 8 none none 9 none Modem Cable Assignments PDAS Modem port 9 pin PDAS conn DB9 25 pin modem conn DB25 Cable colour TxD out 3 2 Rx in white RxD in 2 3 Tx out red Gnd 5 7 black Modem Switch Settings Switch Switch Description number position 1 ON Data Terminal Ready Override 2 OFF Verbal Result Codes 3 ON Suppress Result Codes 4 OFF No echo Offline Commands 5 OFF Auto Answer 6 OFF Carrier Detect Normal 7 ON Load Factory Defaults 8 OFF Dumb Mode Connections for the optional 9 pin AMP CPC event counter connector on PSE models are as follows PIN SIGNAL Cable Color Comment 1 12V Red 2 Event 1 Blue Event Counter 1 connection 3 Ground Black 4 SDI Data White Need not be connected 5 Event 2 Green Event Counter 2 connection 6 Ground Brown 7 9 V bat input Jumper across 7and 9 Need not be connected 8 none none Need not be connected 9 9 V battery Jumper across 7and 9 Need not be connected 5 3 Connectors 46 6 Specifications Processor Atmel 8958252 11 0592 MHz Internal RAM 256 bytes RAM External Memory site 1 32 kbytes SRAM Lithium battery backup site 2 32 kbytes PROM EEPROM sites 384
61. r to the subsections that follow on the appropriate GOES transmitter as such 0 lt CR gt Select Communications Port 0 Programmer Port 1 Modem Port 2 SDI 12 Ports A amp B 0 lt CR gt Set Prog Port Baud Rate 0 300 Baud 1 1200 Baud 2 2400 Baud 3 9600 Baud 4 19200 Baud 4 lt CR gt 4 2 6 Main Menu System Setup 26 By selecting O Programmer Port the user was able to change the baud rate of the programming port from the default value of 9600 to 19200 Note that such a change in the baud rate would require the user to modify the terminal emulator s settings accordingly To do this using Hyperterminal simply click on File then Properties then Configure Change the baud rate and click OK Now click on Disconnect and Connect so that your changes take effect Selection of 1 Modem Port allows the user to configure the baud rate of the modem port as follows 1 lt CR gt Set Modem Port Baud Rate 3 0 300 Baud 1 1200 Baud 2 2400 Baud 3 9600 Baud 4 19200 Baud 4 lt CR gt Set Modem Port Baud Rate 4 0 300 Baud 1 1200 Baud 2 2400 Baud 3 9600 Baud 4 19200 Baud lt CR gt Thus the modem port baud rate was changed to 19200 baud Note that the default value is 9600 baud Refer to section 5 3 Connectors for the proper connection of the modem to the auxiliary port This section also includes a table showing the correct dip switch settings for your modem In order to obtain instructions for GOE
62. s Note that Self timed transmissions are enabled whereas Random transmissions are disabled in the above 4 2 6 1 GOES TGT 1 Transmitter 32 Select 1 Current GOES Time hh mm ss as follows 1 lt CR gt GMT Time 12 09 00 LOCAL Time 08 09 00 Note that the PDAS clock is synchronized to the GOES transmitter clock immediately following every transmission that is following the expiration of the transmission window Select 2 Time to Next Tx as follows 2 lt CR gt Time to Next Tx 00 01 03 25 The next transmission will take place in 1 hour 3 minutes and 25 seconds If the time to next transmission is a nonsensical value it usually means that the TGT 1 transmitter is not armed for transmission and or that the TGT 1 transmission buffer does not yet have any data present For example Time to Next Tx 00 63 63 EA Such a display is a characteristic of the Telonics TGT 1 transmitter when its buffer is empty or the transmitter is disabled To correct consider the following 1 Ensure that the transmitter is armed use for example 4 Enable Both Xmit Modes 2 Use 4 Append String to GOES Buffer Initialization Menu so that the buffer is not empty Following these actions the correct time to next transmission should be displayed Select 3 F amp R Power Last Tx as follows 3 lt CR gt F amp R Power Last Tx F 145 R 28 where F Forward transmission power R Reflected transmission power These values are then entered into the fol
63. s iiisisisiess otto diodo id a AAIE L aniassvarboass 4 206 Main Menu System Setups ii aiid ai 426 1 GOES EGTA Transmitter 32 752 3 2 332 350040 4see30 3o2 3sv03 d2se dsgebse doves ETA E PAAT EAT ETA 4 2 6 2 GOES Bristol B697 4 33 GOES DATA RETRIEVAL ita iia it li it ii tes 4 341 GOES Data Interpreta ii Ai ta 4 4 DIRECT COMMUNICATIONS COMMANDS Y MECHANICAL e ld a dis 45 3 11 Shaft Encoder Setup a elo ais cs 45 AAN D B D SA AA O O ON 45 A NN EEE S EEE E SPEA ee us Fed LONG ELS ER PES E TN ts Maeva des TAPETEN STA 45 APPENDIX A COMMUNICATIONS ERROR MESSAGES 48 APPENDIX B GOES BRISTOL B697 MODE TABLE 49 APPENDIX C PSE SHAFT ENCODER COMMAND csccsssssssssrsscssesssssscesscessssssssssscsssssssssessssesssssseoess OO APPENDIX D MODE CODES FOR EVENT COUNTERS cscssssssssscsssessscssscsssesssesssesssesssesssessscsssessoers OL Table of Contents 2 PDAS AMASSER Pliant Data Acquisition System Pliant Technology Specialists Pliant readily yielding to influence 1 AMASSER PDAS The PDAS product line features intelligent RS 232 communications based data collection platforms with built in menu facility that guides the operator through log set up procedures and data retrieval procedures directly from a laptop or via a modem or even via GOES telecommunications These procedures are accomplished with any standard ASCII communications package such as PROCOMM or simply a dumb terminal emulator and i
64. s thus not dependent on the Operating System of the host This is a great advantage over many of today s products which are configured specifically to operate with a given system and where compatibility is always an issue The base model the PDAS SDI is available with a number of options which allow one to customize the logger to its particular application Standard features of the PDAS SDI include 1 MegaByte of Archive Flash memory storage providing 32 768 32 byte records a real time clock with date time stamp facility for minimum maximum and averaged sensor data two SDI 12 ports providing support for up to 20 sensors one RS232 programming port and one auxiliary communications port with modem support one switched 12VDC power port for sensor activation and much more as listed in section 7 7 The options of the PDAS SDI are listed in section 1 2 Options The on site capability of the AMASSER PDAS data acquisition system to acquire process store and as required transmit data via available communication systems will increase the user s flexibility in the operation of the various data acquisition programs under their control Probably of even greater importance is that the timeliness and cost effectiveness with which this data can be delivered to the user community will provide the incentive for a revaluation of our ability to manage our ever changing natural resources The AMASSER PDAS Data Acquisition System is provided with a real time multi tas
65. switched port was selected in this case because of the low power consumption of the sensor in question e the SDI 12 addresses are numbered from 0 to 9 on both channels A and B at the end of the SDI 12 command as this is done automatically by the soy e the user need not put logger e When prompted Enter value position 1 9 a 1 was entered since we desired the first of the parameters returned that is the encoder position only one parameter is in fact returned in this case e the sampling interval is expressed in minutes and seconds whereas the logging and min max intervals are expressed in hours and minutes e the user is given the option of logging instantaneous or average values e a linear transformation was not defined Select Sensor Equation Type gt none because the sensor in question provides data in engineering units and e the user indicates when the logging shall begin Note that the start time is expressed from 00 00 midnight to 23 59 It is recommended not to use a start time of 00 00 as this is used for scheduled internal routines 4 2 3 Main Menu Sensor Log Setup 17 Note that if a linear transformation is to be applied the user is prompted for the values for Scale and offset For example Select Sensor Equation Type 0 0 None 1 scale value offset 1 lt CR gt Enter Sensor Scale xxx xxx 0 0 375 lt CR gt Enter Sensor Scale xxx xxx 0 375 lt CR gt Enter
66. the Current Status function For this reason these values may not necessarily represent the actual configuration of the transmitter in the event of power interruption and such To reload these values into the transmitter simply select 0 Initialization and press Enter repeatedly until all the locally stored values have been written to the B697 memory 4 2 6 2 GOES Bristol B697 Transmitter Selection of 1 Current GOES Time from the Diagnostics menu 1 lt CR gt GMT Time 21 25 05 RTC Time 16 25 05 Note that the PDAS clock is synchronized to the GOES transmitter clock immediately following every transmission that is following the expiration of the transmission window Select 2 Time to Next Tx as follows 2 lt CR gt Time to Next Tx 00 42 31 This indicates that the next transmission will take place in 42 minutes and 31 seconds The transmitter is therefore armed and operating normally If the transmitter is disabled for example following the use of the selection Initialization the time to next transmission will appear as follows 2 lt CR gt Time to Next Tx EE EE EE The user must therefore arm the transmitter from the GOES main menu in order to enable transmissions to take place 4 2 6 2 GOES Bristol B697 Transmitter 39 4 3 GOES Data Retrieval In order to access the GOES data that the antenna has transmitted the user must dial up the central DAPS facility in Wallops Virginia using a telnet session Once connected t
67. tive digit by scrolling through the available options 0 1 2 3 4 5 6 7 8 9 To use the display to view the current fluid level or event counts simply turn it on with se On The current fluid level appears The value of both event counters can then be viewed in turn by using select Note that the event counters are displayed by flashing the label EVENT 1 or EVENT 2 followed by its corresponding value To return to the fluid level display use select until PASSWORD appears then once more for the initial display of the fluid level To begin the setup of the built in shaft encoder using the display setup can also be done using its SDI 12 capability and a DCP or portable computer switch it on with set On The current encoder position i e water level is displayed Now use select until PASSWORD appears then use set On 000 appears The default password of 000 can now be edited to your own using the EDIT switch When entering the four character password the following characters are valid 0 1 2 3 4 5 6 7 8 9 lt space gt The password can only be viewed or altered from the display and must be entered correctly to view the remaining setup parameters Note that the correct password that was entered to gain entry to the setup parameters can be viewed as long as the display has not switched off with the auto power off feature see below If the display does shut off however and is turned
68. ts for the attached SDI 12 sensors individual sensor setup for User defined sensor Label Sample period setting minutes seconds Command string for measurement initialization of SDI 12 sensors Conversion equations with Offset and Scale Instantaneous or Average log value record period in hour minutes Minimum maximum log record period hour minutes Sensor sample Start Time hour minutes VUUUUYNY 32 768 log records each 32 bytes in length containing Date amp Time Stamp gt User defined Sensor Label gt and Sensor Data View Data Facility selected sensor data written to Host Terminal at a user defined rate real time SDI 12 Transparent Mode Manual SDI 12 Communications Master SDI 12 task engine auto retries auto data buffer retrieval amp auto command time outs ADBus Host Protocol 256 byte messages gt SDI 12 Transparent Mode Support Data Log Retrieval through standard Comm Packages ie Procomm Data Log Retrieval with any dumb terminal emulator with capture capability SDI 12 Command like Host Comm protocol with embedded menuing system Fully ASCII Character Based Adaptive File System No set up needed Flexible Real Time Viewing and Setup of sensors amp Flash Data Log Standard firmware support for Averaging of sampled data 1 AMASSER PDAS 1 1 PDAS SDI 1 2 Options The PDAS SDI is available with a number of options which include a built in shaft encoder GOES firmware support for
69. us of the transmitter set up Please refer to 4 2 6 1 b Diagnostics 4 2 6 1 GOES TGT 1 Transmitter 31 4 2 6 1 B DIAGNOSTICS From the GOES main menu the user selects 1 Diagnostics in order to establish if the transmitter is set up as desired and that transmissions will take place as intended As explained previously the GOES main menu is obtained from the System Setup submenu as follows 0 lt CR gt Select Communications Port 0 Programmer Port 1 GOES Telonics TGT 1 2 SDI 12 Ports A amp B 1 lt CR gt GOES Transmitter TGT 1 0 Initialization ATA GOES main menu 1 Diagnostics 2 Enable Self timed Transmissions 3 Enable Random Transmissions 4 Enable Both Xmit Modes M Main Menu 1 lt CR gt GOES DIAGNOSTICS 0 Current Configuration 1 Current GOES Time hh mm ss 2 Time to Next Tx 3 F amp R Power Last Tx 4 Error Status 5 Reset Error Counter 6 Tx Buffer Status M Main Menu The user is thus presented with choices that enable a complete diagnostics of the GOES Use 0 Current Configuration to display the GOES set up as follows 0 lt CR gt GOES Platform Address 48161450 Self Timed Channel 09 Tx Interval 00 03 00 00 Offset Time 00 57 00 Tx Window minutes 1 Random Channel 04 Tx Interval 00 15 00 Link Parameters Short Preamble Self Timed Enabled Random Disabled If the above is different from the intended configuration the user uses 0 Initialization to make any necessary change

PDAS-SDI - AMASS Data Technologies Inc

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