Elegant Manual
Contents
1. 30 8 amp 31 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Overview l Overview of the Oss Utility Control System The OSS utility Control System main purpose is to control the primary mirror cell temperature The mirror cell is divided up into 32 sections where 28 of which have temperature sensors Most of the sections in the cell also have one or more fans with an associated heater to control the temperature The heaters on each fan in the mirror cell allow temperatures to be corrected upwards There is a Coolant pump providing cooling to each fan A miximg valve controls the percentage of glycol water that is replaced and what percent is taken from the telescope chiller supply line The telescope counterweights are controlled by OSS control System The telescope has three counterweights one inside each altitude disk the Z counterweights which move parallel to the primary optical axis and one X counterweight which moves perpendicular to the optical axis vertically if the telescope is pointed at the horizon The mirror cover control is supplied by OSS control System Mirror cover control can be either Local at the OSS contactor chassis or Remote which allows the OSS program control 11 Devices Adam 4021 module controls the mixing valve e Adam 4017 module reads the counterweight real position and heater2. 807 Fans 19A to 24A speeds Format 807aaaabbbbccccddddeeeeffffgggghhhh see 803 808 Fans 24B to 26C speeds Format 808aaaabbbbccccddddeeeeffffgggghhhh see 803 809 Fans 26D to 31B speeds Format 809aaaabbbbccccddddeeeeffffgggghhhh see 803 810 813 Mirror temperatures relative to air temp in four groups of seven readings Format 81iaaaaaabbbbbbccccccddddddeeeeeeffffffggggggcc aaaaaa gggggg Temperature in deg celcius times 1000 as signed integer 814 All the other temperatures Format 814aaaaaabbbbbbccccccddddddeeeeeeffffffgggggghhhhhhocc aaaaaa air temp TAir bbbbbb platinum wire TPlat cccccc copper block TBlk dddddd chilled liquid in TCIn eeeeee chilled liquid out TCOut ffffff air around copper block TAirBlk gggggg median of mirror temps Filtered Temp hhhhhh average temp of four sensors above mirror TOut cc checksum All readings in deg celcius times 1000 Successes 900 999 992 Host error messages resumed Communication with the host TCS was restored 993 Mixing Valve set to x 28 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 994 995 996 997 998 999 The mixing valve was set to the given percentage open HP error messages resumed Communication with the HP was restored Future com errors will be displayed again Fan Status Card x error messages resumed Communication with the given Fan Status Card was restored Future com
3. 1 and 8 0 East Mirror cover opening 7 0 and 8 1 East Mirror cover closing 9 10 bit 9 0 and 10 0 East Mirror cover no limit 9 1 and 10 0 East Mirror cover open limit 26 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 9 0 and 10 1 East Mirror cover close limit 9 1 and 10 1 East Mirror cover both limits error 11 East Mirror cover overload 0 OK 1 Active 802 Fan and heater status Format 802aaaabbbbccccddddeeeeffffgggg aaaa Heater and fan status Fans 2A to 6C 0 Fan 2A Heater 0 Off 1 On 1 Fan 2A Fan Status 0 OK 1 Error 2 Fan 2B Heater 0 Off 1 On 3 Fan 2B Fan Status 0 OK 1 Error etc bbbb Heater and fan status Fans 7A to 9B see a cccc Heater and fan status Fans 9C to 14A see a dddd Heater and fan status Fans 15A to 18B see a eeee Heater and fan status Fans 19A to 24A see a ffff Heater and fan status Fans 24B to 26C see a gggg Heater and fan status Fans 26D to 31B see a 803 Fan Speeds Fans 2A to 6C Format 803aaaabbbbccccddddeeeeffffgggghhhh aaaa Fan 2A speed in RPMs bbbb Fan 2B speed in RPMs 804 Fans 7A to 9B speeds Format 804aaaabbbbccccddddeeeeffffgggghhhh 805 Fans 9C to 14A speeds Format 805aaaabbbbccccddddeeeeffffgggghhhh see 803 806 Fans 15A to 18B speeds Format 806aaaabbbbccccddddeeeeffffgggghhhh see 803 27 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL
4. VF n Set cell ventilation fans to n n OFF LOW HIGH VL n Set cell ventilation louvers to n n CLS OPN closed or open CP n Set coolant pump to n n OFF ON CW CE CY n Set West Z East Z Y counterweight motion to n where n U D S up down or stop n 0 0 99 9 MV n Set mixing valve to n 96 open n 0 0 100 0 MW ME n Set West East mirror cover to n OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL n CLS OPN S closed open or stopped MCn West and East mirror cover to n n CLS OPN S closed open or stopped CF n Set all 56 fans in M1 cell to n n OFF ON TC1 n Turn primary mirror temperature control to n 1 Strategy n OFF ON manual or automatic TC2 n Turn primary mirror temperature control to n 2 Strategy n OFF ON manual or automatic KP KI KD TCO n Offset parameter in 1 temp control strategy RTn Reference temperature for 2 temp control strategy CLEAR n Test bit by bit the 8 cell fans and louvers with n 3 6 4 and 5 SET n Setting bit by bit n 3 6 4 and 5 TT Toggles all 28 cell temperature display between absolute and relative to TAir 3 2 Message Commands Command Description Up Scroll system message display back one line OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Pg Up Scroll system message display back one pag
5. currents e The HP unit HP34970A is required to sense the mirror cell temperatures and the Fan Status Cards 1 and 2 are required to sense fan RPMs 1 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Interface 2 Oss Utility Control System Interface 15 33 39 55 004 Fan 31B speed error 21 Primary Mirror Cell Display One of the OSS utility program s main purposes is to control the primary mirror cell temperature The current state of the cell is displayed in the top left panel as a graphical representation The temperature sensors are 2 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL differential and display the temperature difference between that section and ambient measured from a block of copper Each section has a small graph that shows the section s temperature trend The average of all 28 sections over the last 24 hours is displayed in the larger graph at the top left of the next panel over The scale of the charts is displayed at the bottom left of the panel and can be changed with the TS command A fan heater combination is identified by the section and the fan letter Thus the top left fan and heater are referred to as 2A The circle around the letter representing the fan is colored red if the fan is off or running outside of a nominal speed If this is the case the program won t allow the associated heater to turn on The heater with each fan is shown as an LED immediately to the left of each
6. fan If the heater is on the LED will be green and black if it s off 22 F11 Secondary Status Display The top right of the right status panel shows the three F11 secondary inputs Atthe time ofthis writing the inputs had not been connected 23 Ventilation Fan and Louver Display The section below the Average Temperature graph displays the current cell ventilation and louver fan status Note that these are a set of eight fans and louvers around the perimeter of the mirror cell independent of the fans mounted on the back of the cell The fan status can be off low speed or high speed The louvers can be open closed or unknown displayed as question marks If the louvers are in an unknown state they will be homed the next time a louver command is given To the left of the fan and louver labels are LEDs These will be black if the fans louvers are off closed They will light green if the fans louvers are open on 24 Coolant Pump Mixing Valve Display To the right of the ventilation fan and louver status is a section that displays the coolant pump and mixing valve status The coolant pump status can be either off on or overloaded These three conditions are printed to the right of the pump label They are also reflected in the color of the LED to the left of the label black off green on and red overload An overload condition must be cleared on the telescope inside the OSS Utilities Contactor Chassis To reset the overl
7. hexadecimal characters digits with the format being determined by the particular message number cc Checksum described above r ASCII charater 13 a carriage return 3 Repeat Last EDS Message Commands the guest computer to re send the last message it sent implying that the host computer had a serial communication error during the last reponse The guest s internal pointer should remain unchanged Command Format I3r note that this command has no checksum Response Format 3qqnnttttttttfffdddddddccr I Guest computer address usually an upper case letter 18 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL qq Two digit number of EDS messages left in the guest queue nn Two digit number of characters in the message in the underlined section 00 if no message available there is no time stamp message number or data in this case tttttttt Eight digit message time stamp no punctuation with two digit hour two digit minute two digit second and two digit hundredths of a second fff Three digit message number Message numbers from 0 799 denote errors 800 899 are numberical data formats and 900 999 are successes ddddddd Variable length message data section For error and success messages typically a simple text message For numeric data formats a combination of ASCII decimal and hexadecimal characters digits with the format being determined by the particular message number cc Chec
8. manual mode heaters are toggled individually in auto mode each cell section is controlled by a PID loop automatically At the time of this writing this has not been implemented The current required by the heaters is supplied by three phases A B and C Heaters 2A through 11B are supplied by Phase A heaters 12A through 24A are supplied by Phase B and heaters 24B through 31B are supplied by Phase C as shown onscreen The expected current draw based upon the number of heaters active is displayed in the first column and the current drawn in amps is in the second column Note that communication with the Adam 4017 module must be OK for the currents to be read The LED to the left of each phase label will be red if that phase s current differs from the expected amount by too much and all heaters on that phase will be turned off At the time of this writing this has not been implemented OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 28 055 Chassis Circuit Breaker Display The next section to the right displays the Heaters and OSS Chassis overload inputs The LEDs to the left of the labels should be black during normal operation If the Heaters OSS Chassis drew too much current the overload will be tripped and the LEDs will turn from black to red If this happens the overload must be reset on the telescope The Heater Overload circuit breaker is located in the OSS Utility Chassis To reset the breaker you will need to close
9. occurred mmmm Variable length diagnostic message such as Move ignored brake on This should be printed out by the host computer in the command input box if the command was given by the user or in the system log if the command was given by an automated routine in the host program nn 00 in the response if there is no diagnostic message 20 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 21 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Log Message System 6 Log Message System Last updated 10 29 2000 Note that for error messages with an error code the error code is just used to find where in the program s source code the error occurred and is used to find bugs The system log in verbose mode should be used in most cases to diagnose strange problems Then just recreate the problem error message and hit the log dump function key There should be very explicit error messages that tell what was sent to devices and how they responded and what the program was expecting Errors 0 799 001 Incorrectly formatted UT message from TCS The TCS computer sent a Universal Time set command but it was garbled Check communications link and look at the log in verbose mode to see what the TCS is sending 002 Adam x com error y The Adam module x on COM2 had a communications error Check communication with the T2 command or put the log in verbose mode to see what is being said between the computer and the Ad
10. THE OBSERVATORIES OF THE CARNEGIE INSTITUTION OF WASHINGTON 813 Santa Barbara Street Pasadena California 91101 Phone 626 577 1122 Fax 626 795 8136 Document Code Type Author Date Revision OSS UTILITIES CONTROL SYSTEM SOFTWARE User Manual 01 00 13 User Manual Silvia Baeza and Jose M Soto April 2008 Jose M Soto Revisions Table Date Description April 2008 Document Update May 11 2003 Document Creation Table of Contents 1 OVERVIEW OF THE OSS UTILITY CONTROL SYSTEM eee reete testet estne 1 LASDEVIGES ec E LER P 1 2 OSS UTILITY CONTROL SYSTEM INTERFACE eese eese tn nine onne onne 00000000 0000000 0000 2 2 1 Primary Mirror Cell Displays isesi tot hte bee a e Cm eei e erg 2 2 2 BY T Secondary Status Display 5er ere ete ee pti e py iet ce ese pet etre e peres 3 2 3 Ventilation Fan and Louver Display ee eet eret t C b eo nib te rte ke ska 3 2 4 Coolant Pump Mixing Valve Display eese ener enne eren rent nente tenente veetee eene 3 2 5 Cou nterweight Displ y nieder eret o pe E e gp eoe andes eee tos 4 2 6 Mirror Cover Display eee ten ee o Ma eee ne hero an te ee hag c ee e m epa 4 2 7 Heater Current Display niece enin nre te e ete e t e EE epe eto eee eds 5 2 8 Oss Chassis Circuit Breaker Display ter e
11. alization data for the OSS Utility program Lines starting with a are ignored Every other line contains a description followed by an equal sign follwed by a data value DO NOT change the order of the data values the program ignores the description in front of them and DO NOT add blank lines between values Telescope Baade 1 Clay 2 Telescope 1 Serial communication constants Address of this computer on the line to the host computer Address I Prompt character for this computer Prompt Response character of this computer Response 11 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Amount in parts per million to speed up or slow down the system clock Use this to make the system clock as accurate as desired ClockPPM 465 Heater constants Maximum time a heater bit can be on before resetting in seconds This avoids triggering the hardware watchdog MaxHeaterTime 50 Time in ms all heaters must be off to satisfy the heater watchdog HeaterCycleTime 250 Current in amps per heater that s on CurrentPerHeater 0 89 Maximum error in percent that the heater current can deviate from its expected value MaxHeaterCurrentError 10 0 Initial temperature scale degrees C Cell TempScale 1 0 Fan constants Maximum allowable fan RPMs MaxFanSpeed 3000 Minimum allo
12. am The error number given helps pinpoint where in the source code the error occurred 003 Adam x error messages suspended The Adam module x on COM2 had too many consecutive communication errors Further error messages will be suppressed 004 Fan x speed error 22 UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL The listed fan is running too slowly or too quickly Check fan and fan status card communication operation 005 Fan Status Card x com error y The Fan Status Card x on COM2 had a communications error Check communication with the T2 command or put the log in verbose mode to see what is being said between the computer and the card The error number given helps pinpoint where in the source code the error occurred 006 Fan Status Card x error messages suspended The Fan Status Card x on COM2 had too many consecutive communication errors Further error messages will be suppressed 007 HP com error x The HP on COM3 had a communications error Check communication with the T3 command or put the log in verbose mode to see what is being said between the computer and the HP The error number given helps pinpoint where in the source code the error occurred 008 HP error messages suspended The HP on COM3 had too many consecutive communication errors Further error messages will be suppressed 010 Host com error x There was a host TCS communications error Put the log into verbose mode to see what is bei
13. chained on the same serial line Full command format inddddddddddccr The is the prompt character to initiate communication I is the guest computer s unit address in this case is Oss Utility computer n is a command number d s are data specific to the command variable length cc is a checksum and r is a carriage return ASCII 13 Full response format Indddddddccr The is the response character for guest computer responses I is the guest computer s unit address n is the command number this is in response to d s are data specific to the response variable length cc is a checksum and r is a carriage return ASCII 13 16 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL For very short commands and responses the checksum may be omitted this is noted in the command description For all commands and responses that include a checksum the checksum is composed of two hexadecimal digits from 0 The checksum is calculated by starting with zero and XORing it with all characters in the message from the unit letter to the last data character before the checksum the underlined part of the command and response above Commands that are received but misunderstood checksum wrong unknown command etc are replied to like this r Most guest computers maintain a running system log that contains important messages and all system status information Each also maintains a pointer into that log that keeps
14. e Down Scroll system message display forward one line Pg Dn Scroll system message display forward one page Home Set system message display to show the first message End Set system message display to show the current message 3 3 Display Commands Command Description TS n Set temperature scale for display to n n 0 01 99 99 C F1 Display online help screen Scroll Lock VERB n Pause Resume system log messages Set system log verbose level to n n O 2 34 Engineering Commands Command Description OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Hn Toggle heater on fan n on or off n 2A 13B etc Fn Display current RPMs of fan n n 2A 13B etc T2 Terminal with Adam modules on COM 2 T9 Terminal with Adam modules on COM 2 at 9600 baud for module setup T3 Terminal with Hewlett Packard unit on COM 3 TA Terminal with DGH on COM4 at 300 baud for setup F2 Dump system log to the file TEMP LOG F3 Dump screen to file SCREEN BMP in Windows BMP format 35 Other Commands Command Description Q EXIT Exit the program 10 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Configuration 4 Oss Utility Configuration 41 Oss ini file Magellan OSS INI Last modified 3 1 2003 JMS This file contains all easily modified initi
15. e red there is an error reading the limits or a limit is broken In case a move command with a numeric argument has been issued the requested value is shown in the Reg column The final column displays the counterweights real positions These are read by the Adam 4017 module which must be communicating for these readings to be valid The 4 20 mA reading from the Adam 4017 has been scaled so the position shown ranges as a percent from 0 0 99 9 The telescope is balanced with the following counterweights positions X 6 696 W 59 296 E 59 1 26 Mirror Cover Display To the right of the counterweight display is the status of the mirror covers The status of the Local Remote switch is displayed next to the mirror cover label As in the other subsystems each mirror cover has an overload warning which is indicated if the LED left of each mirror cover label turns from black to red Again the overload condition must be reset on the telescope The thermal overload relays for the two mirror covers are located inside the OSS 4 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Utilities Contactor Chassis To reset an overload relay press the reset button on contactor CT1 or CT2 CAUTION HIGH VOLTAGE IS PRESENT THE RESET OPERATION MUST BE PERFORMED BY QUALIFIED PERSONNEL ONLY The M column displays mirror cover motion and the L column displays the limit switch status For the West mirror cover when th
16. e right motion arrow lights green that mirror cover is closing and when the left motion arrow lights green the mirror cover is opening Likewise if the right limit arrow lights green the mirror cover is closed and if the left limit arrow lights green the mirror cover is open If both limit arrows go red there is either an error reading the limits or a limit switch is malfunctioning The arrow meanings are reversed for the East mirror cover the left arrows indicate closing closed and the right arrows indicate opening opened To remind you the actual position is displayed in text to the right of the M and L columns under Psn with OPN open CLS closed MID midway and ERR error being the possibilities Finally there is an indication of the pinch switch which is triggered if the mirror covers close on something like a person If the pinch switch is triggered its LED will go from black to red and further motion will be impossible until it is reset To reset the mirror cover pinch latch turn the Mirror Cover Control key switch on the OSS Utilities Contactor Chassis to the Off position then back to Remote CAUTION ALWAYS CHECK THE MIRROR COVERS TO DETERMINE THE CAUSE OF TRIGGER 27 Heater Current Display The next section down shows the status of the currents being supplied to the heaters The mode the heaters are in is displayed to the right of the Heaters title and is either Man manual or Aut automatic In
17. errors will be displayed again Adam x error messages resumed Communication with the given Adam module was restored Future com errors will be displayed again Screen dumped to SCREEN BMP The screen was captured and dumped to the file SCREEN BMP It can be viewed in Windows UT set by TCS to xx xx xx xx The TCS sent a command to set Universal Time The command was received sucessfully and UT was set Program startup vx xx First log entry after program startup with version number 29 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 7 Oss Utility Control System differences between Magellan and II 30 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 8 Troubleshooting 31
18. ertain number of errors may occur when the program is loaded before the serial communications are properly initialized A few errors will occur during normal operation The messages are numbered from 0 to 999 When the message buffer is full new messages are written over the old ones starting from the beginning so message 1000 is written to location O and so on The most recent message is displayed in white You can scroll back and forth through the message buffer using the cursor keys To return to the page with the most recent message be sure to use End or else new messages will not appear on your screen although new messages will always be written to the message buffer The elapsed time in days that the program has been running is shown next to the ET entry and the current UT is shown as well The UT is set by the CMOS clock in the computer when the program starts but it is updated by the TCS as soon as communication is established and once per hour after that 15 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Serial Communication 5 Control System Serial Communication Standards There is always a host upstream computer and a guest downstream computer The host computer is frequently the TCS with the guest being Oss Utility computer The host system sends a command and the guest responds immediately to that command Guest computers never broadcast without being queried which allows multiple guests to be
19. ksum described above ASCII charater 13 a carriage return 4 Set UT Commands the guest computer to set its clock to the Universal Time given in this command The control computers keep their clocks synchronized to GPS provided universal time in this way Command Format JAttttttttccr Response Format l4er note that this response has no checksum I Guest computer address usually an upper case letter tttttttt Eight digit universal time no punctuation with two digit hour two digit minute two digit second and two digit hundredths of a second cc Checksum described above 19 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL r ASCII charater 13 a carriage return e Error flag 0 if an error occurred 1 if OK 9 Free form Command Sends the guest Oss Utility computer a free form command typically similar to the commands entered via the guest computer s keyboard This is used to command moves homes etc Command Format 9nndddddddccr Response Format 9ennmmmmccr I Guest computer address usually an upper case letter nn Two digit number of characters in the message in the underlined section 00 if no message available ddddddd Variable length free form command section This section will contain a command parseable by the guest computer such as MOVE 1000 cc Checksum described above r ASCII charater 13 a carriage return e Error flag if OK 1 or higher if an error
20. ng said between the computer and the TCS The error number given helps pinpoint where in the source code the error occurred 011 Host error messages suspended The host TCS had too many consecutive communication errors Further error messages will be suppressed 014 DGH x error message suspended 61 EDS Logs data formats 800 899 800 Communication Status of temperature sensors ventilation fan louvers chassis cooling pump etc Information about primary mirror sensors status 23 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL aa Communication status hex value 0 0 Adam 4017 com status OK 1 Error 1 0 Adam 4021 com status OK 1 Error 2 0 HP com status OK 1 Error 3 0 Fan Status Card 1 com status OK 1 4 0 Fan Status Card 2 com status OK 1 5 0 Host com status OK 1 Error b F11 Inputs hex value 0 In Proximity 1 Active 1 Lock Limits 1 Active 2 Cell Limits 1 Active Error Error cc Chassis ventilation fan louver and coolant pump value value 0 OSS Chassis overload 1 Active 1 2 value 1 0 and 2 0 Vent fans off 1 1 and 2 0 Vent fans low 1 0 and 2 ll p Vent fans high 3 4 3 0 and 4 0 Vent louvers unknown 3 1 and 4 0 Vent louvers closed 3 0 4 1 Vent louvers open 71641 5 0 and o ll 0 Coolant pump off 5 1 and 6 0 Coolant pump on 5 0 and 6 1 Coolant pump ove
21. oad relay press the reset 3 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL button on contactor CT4 CAUTION HIGH VOLTAGE IS PRESENT ONLY QUALIFIED PERSONNEL SHOULD PERFORM THE RESET OPERATION The mixing valve output will be listed as a percentage At the time of this writing it s not known if it is the percent recirculated coolant or the percent of fresh coolant Note that the mixing valve is controlled by the Adam 4021 module so if communication is down with it the mixing valve cannot be controlled and the current value may be listed as 999 9995 25 Counterweight Display The section below the ventilation status is dedicated to the telescope s counterweights To the left of the three counterweights labels are LEDs which will turn from black normal to red in the case of an overload This condition must be reset on the telescope The thermal overload relays for the three counterweights are located inside the OSS Utilities Contactor Chassis To reset an overload relay press the reset button contactor CT3 CT5 or CT6 CAUTION HIGH VOLTAGE IS PRESENT THE RESET OPERATION SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY Counterweight motion is shown under the M column For the Z and X counterweights if the up or down arrows light green it indicates forward or reverse motion respectively Limit switches are indicated in the L column The up or down LEDs will turn from black to red if a limit is encountered If both ar
22. pi bebe pi rre bacs 3 2 9 Communications Status Display ieetereeeeenreeereneeereeneeneeeneenneeneeeneenteeneneneeeneenenneeeneeneeeeneeeet 6 3 COMMANDS SUMMA T 3 1 User Commands EUER ges e OPORTUIT la 7 3 2 Message Commands nee RB wae IUe UR e RENE Te N a 8 3 3 Display Commands nte heap DR HH SEE RO UR ORDER RR REPERI RES 9 3 4 Engineering Commands rsen ees res rte erede ree Hie ende tee tere le iere eese tod 9 3 5 Other Commands cs eH RU e A ee i de ha t e ie Ee eas 10 4 OSS UTILITY CONFIGURAT ION eee eeee tassa sine neeme neeme 80000 80000 8008000 tn 0800800 nonoenenoen0 00800000 11 4 T Ossam tile Magellan e ertet ee i tm RD ete ere 11 4 2 Ossanr Magellan 1L 2 5 noe eite pe e eO RE ER EDD RE EE eee 13 4 3 08sunr Description iot eee elena po Dp ente eee aea DP 13 4 4 Starting the Program E EIN ERR ORE EMU 15 5 CONTROL SYSTEM SERIAL COMMUNICATION STANDARDS oenoeooneooononoononoonoenenoenenoene too 00000 16 SA Command Description cite nime tete tameo ote deer dte te eese 17 6 LOG MESSAGE SYSTEM 0000000 0000 0000000000000800000000 22 6 TEDS Logs data formats 900 8909 5 a ertet e HERE dp REOR RR Man 23 7 OSS UTILITY CONTROL SYSTEM DIFFERENCES BETWEEN MAGELLAN I AND
23. rload dddd Mixing valve setting in 10 997 99 7 ee Heater status hex 0 Heater control 0 Manual 1 Automatic 1 Heater status 0 OK 1 Overload decimal PID control Doesn t match 2 Phase A Expected matches Current 0 0K 1 3 Phase B Expected matches Current 0 0K 1 Doesn t match 4 Phase C Expected matches Current 0 OK 1 Doesn t match 24 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL ffffff Phase A Current in amps 100 785 7 85A decimal gggggg Phase A Expected Current in amps 100 785 7 854 decimal hhhhhh Phase A Current in amps 100 785 7 85A decimal 111111 Phase A Expected Current in amps 100 785 7 854 decimal 333355 Phase A Current in amps 100 785 7 85A decimal kkkkkk Phase A Expected Current in amps 100 785 7 854 decimal 801 Counterweight information status Format 801aabbbbbccdddddeefffffggg aa X Counterweight hex 0 X counterweight overload 0 OK 1 Overload 1 2 bit 0 0 and bit 1 0 No motion e ll 1 and bit 1 ll South motion down arrow 0 0 and bit 1 1 North motion up arrow 3 4 bit 0 0 and bit 1 0 No limit 0 1 and bit 1 0 South limit down arrow ll 0 and bit 1 ll p North limit up arrow 0 1 and bit 1 1 Both limits error bbbbb X Counterweight position in 100 997 99 7 decimal cc West Z Co
24. s should be 13 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL ClockPPM A number in parts per millionth of a second to speed up or slow down the system clock This should be used to match UT as closely as possible To set allow the TCS to set the OSS s UT several times over the course of many hours If the timestamps of the UT Set messages in the system log are ahead of the time being set increase ClockPPM by 1000000 amount ahead by in seconds time since last UT Set message in seconds otherwise decrease by the same amount This number will have to be modified if the computer being used to run the OSS program is changed Set this number to zero if you re unsure MaxHeaterTime Maximum time a heater can be on in seconds before the program automatically cycles it to prevent the heater watchdog from triggering Should be about 50 HeaterCycleTime Time in milliseconds a heater must be off during a cycle to satisfy the heater watchdog CurrentPerHeater Current in amps per heater that s on used to calculate expected current MaxHeaterCurrentError Maximum heater current deviation from expected in percent Cell TempScale Temperature scale in degrees C at program startup MaxFanSpeed Highest fan RPMs allowed before flagging an error MinFanSpeed Lowest fan RPMs permitted before flagging an error The following are normalizing scaling factors for the counterweight encoder values XCSFA XCSFB X counter
25. the east mirror cover and push up CB1 inside the chassis The Chassis circuit breaker is located in the OSS Utilities Contactor Chassis To reset the breaker push up CB2 inside the chassis CAUTION HIGH VOLTAGE IS PRESENT IN THE ABOVE TWO CHASSIS ONLY QUALIFIED PERSONNEL SHOULD PERFORM THE RESET OPERATION Finding the cause of the overload would be useful 29 Communications Status Display The last panel is entitled Communications Status It simply shows at a glance which devices are communicating with the OSS successfully and which have errors If the LED next to a device name is red there are com errors and if it s green communication is operational The Host is the TCS computer The Adam 4017 is required for sensing counterweight positions and heater currents The Adam 4021 is required to control the mixing valve The HP unit is required to sense the mirror cell temperatures and the Fan Status Cards are required to sense fan RPMs OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Commands 3 Commands Summary All OSS Optical Support System commands begin with a command code followed by one or more arguments The arguments and the command must all be separated by spaces Letters may be upper or lower case The backspace key moves the cursor back one character at a time All commands are terminated by a cr Hit F1 for a quick command help screen 31 User Commands Command Description
26. track of the oldest message that hasn t been sent to the host computer The 2 and 3 commands let the host computer command the guest computer to transmit one of its log entries or re transmit the last entry This is referred to as the Engineering Data Stream or EDS Command Summary 2 Query Next EDS Message 3 Repeat Last EDS Message 4 Set UT 9 Free form Command 51 Command Description 2 Query Next EDS Message Commands the guest computer to send its oldest un sent EDS log entry and advance its internal pointer to the next EDS log entry 17 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL Command Format 12r note that this command has no checksum Response Format 2qqnnttttttttfffdddddddccr I Guest Oss Utility computer address usually an upper case letter qq Two digit number of EDS messages left in the guest queue nn Two digit number of characters in the message in the underlined section 00 if no message available tttttttt Eight digit message time stamp no punctuation with two digit hour two digit minute two digit second and two digit hundredths of a second fff Three digit message number Message numbers from 0 799 denote errors 800 899 are numberical data formats and 900 999 are successes ddddddd Variable length message data section For error and success messages typically a simple text message For numeric data formats a combination of ASCII decimal and
27. unterweight hex 0 West Z counterweight overload 0 OK 1 Overload 1 2 position 0 0 and 1 0 No motion 0 1 and 1 0 Up motion o ll 0 and 1 1 Down motion 3 4 value 0 0 and 1 0 No limit 0 1 1 0 Up limit 0 0 and 1 1 Down limit 0 1 1 1 Both limits error 25 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL ddddd East Z Counterweight position in 100 997 99 7 decimal ee East Z Counterweight bits hex 0 East Z counterweight overload 0 OK 1 Overload 1 2 0 0 1 0 No motion 0 1 and 1 0 Up motion 0 0 and 1 1 Down motion 3 4 0 0 1 0 No limit 0 1 1 0 Up limit 0 0 and 1 1 Down limit 0 1 1 1 Both limits error fffff west Z Counterweight position in 100 997 99 7 decimal ggg Mirror cover status hex 0 Mirror cover mode 0 Remote 1 Local 1 Mirror cover pinch switch 0 OK 1 Active 2 3 2 0 and 3 0 West Mirror cover stopped 2 1 and 3 0 West Mirror cover opening 2 0 and 3 1 West Mirror cover closing 4 5 4 0 and 5 0 West Mirror cover no limit 4 1 and 5 0 West Mirror cover open limit 4 0 and bit 5 1 West Mirror cover close limit 4 1 and 5 1 West Mirror cover both limits error 6 West Mirror cover overload 0 OK 1 Active 7 8 bit 7 0 and 8 0 East Mirror cover stopped 7
28. wable fan RPMs MinFanSpeed 2000 Counterweights encoder scaling factors XCSFA 1 413 12 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL XCSFB 7 698 WCSFA m 433 WCSFB 7 966 ECSFA ll p 416 ECSFB ll 701 Mixing valve maximum opening Cell MVmaxop 50 0 Allowable Delta and Delta between platinum truss temperature and center section air temp measured by 4 wires above primary mirror Cell PlatmD 7 0 Cell PlatpD 7 0 42 Ossini Magellan Il 43 Ossini Description The OSS Utility program reads a small amount of configuration data from the file OSS INI which is in the same directory as the OSS Utility program This is a simple text file which can be edited with any text editor All lines starting with a are ignored all other lines are significant Non comment lines will have a label an equal sign and a value Do not change the order of the lines or add blank lines that aren t begun with a as this will interfere with the OSS program s ability to read the file The following values can be set in this file Address The address character that the OSS program responds to as per the control system serial communication documents This should be I Prompt The prompt character that the OSS program responds to This should be Response The response character that precedes all OSS replies Thi
29. weight encoder scaling factors transforming raw units 12 117 to the range 0 296 99 796 WCSFA WCSFB Z West counterweight encoder scaling factors transforming raw units 12 116 to the range 0 2 99 7 ECSFA ECSFB 2 East counterweight encoder scaling factors transforming raw units 12 116 5 to the range 0 2 99 7 14 OSS UTILITY CONTROL SYSTEM SOFTWARE USER MANUAL 44 Starting the Program To start the OSS program push the reset button the black rocker switch just below the red power switch on the computer or cycle power to it from the circuit breakers at the base of the telescope The program will load automatically from the solid state disk Resetting the computer insures that the system will start each time in the proper state When the program is loaded you should see the usual video display of OSS utility data You can type commands which appear at the prompt in the input panel At the top of the input panel the average and maximum cycle times for the program s main loop are displayed in milliseconds Status messages are displayed in the system message box The UT at which the message occurred is followed by a three digit message identification code A red LED indicates that the message describes error A green LED indicates that the message describes a normal condition or success Most errors are caused by serial communication errors or by some piece of remote equipment being turned off A c
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