CAEN C111A rev0
Contents
1. For proper operation the double width CAMAC crate controller has to be placed into the two last right slots of the CAMAC crate to have the access to the data lines RO R23 WO W23 and to the geographical mapping of station number N and LAM reguest Each access to a module in the CAMAC crate is done via the dataway by calls of station number N function number F and sub address A NAF code or by calling the common CAMAC lines C clear Z initialise and I inhibit The station number N ranging between 1 and 23 24 25 C111A corresponds to the position of the module in the crate see numbering on crate The function number F 0 31 defines the type of operation i e the use of read and or write lines Table 3 CAMAC function scheme Read data or register Pr check delete data or register 1633 writedataorregister s 24 31 enable disable LAM reserved Lo 124 functions The sub address A 0 15 defines special registers or inputs channels in the called module CAERL 29 08 97 C111A User s Manual For each used CAMAC module in the system one has to know the several NAF codes and related operations to be able to control and program it see module description or manual 2 2 CAMAC Dataway Timing All CAMAC operations are performed via the CAMAC dataway whereby a series of signals is involved into the operation The following diagram illustrates the dataway timing and synchronization for an address2. DESCRIPTION o ccccccococonocononononononononononononononoconononocononocononococonecononanos 8 4 INSTALLATION FY HF HF SH YH HEH HT YH HYN 12 AECA INSTALLATION ss ii til ditas tt ei Ge eer Ye YD din 12 42 INTERFACE INSTAELATION de CL DNW URL idas 12 43 TINITIALISATION sie ene il ra Cr WYT GG GYNT ed 12 SACP PEN sD Ib GYFF YY Y RR YD EFA 13 CAER 29 08 97 C111A User s Manual 1 CAMAC Crate Controller C111A 1 1 General Description The CIIIA is a standard CAMAC crate controller with 16 bit interface for computer link which can be used in single or multi crate CAMAC systems Up to 15 crates eguipped with the C111A can be fully controlled from one interface The following interfaces are available for the C111A e A151A for IBM PC AT e A151A TURBO for IBM PC AT In a multi crate system the geographical address of each crate is fixed by a hexadecimal front panel swith of the C111A All controllers C111A and the interface in one chain are connected in parallel via a 50 wire flat or twisted pair cable max 30 metres 200 metres cable length For proper operation the last station on each side of the chain has to be terminated by resistors The C111A and the available interfaces are designed for a high speed data transfer The maximum data rates depending on computer system are e CNAF Mode PC CAMAC up to 200kHz e Block Mode PC CAMAC up to 500kHz with A151A Turbo The C111A consists of two boards i e the controlling
3. any existing CAMAC set up to a new dimension in multi parameter experiments without any further development of special electronical instruments computer interfaces and software CAER 29 08 97 C111A User s Manual 1 2 Front Panel Four status LED s are placed on the C111A front panel to show ACCESS BUS ON INHIBIT and LAM REOUEST with the following functions ACCESS lights if there is any access from the interface Bus on lights if the C111A is enabled Inhibit lights if the CAMAC Inhibit line is set LAM lights if there is a LAM reguest from any enabled station CA Cu CAMAC CONTROLLER Mod C111A S ACCESS O BUS ON 8 INHIBIT amp LAM 8 gt oA INTERFACE CONNECTOR Fig 1 C111A front panel CAERL 29 08 97 C111A User s Manual Below the status LED s a hexadecimal switch is located by which the geographical crate address of the C111A is fixed The allowed crate number values are in the range between O and 14 hexadecimal 0 9 A B C D E The 50 pin connector on the front panel is mounted for parallel link to the interface flat or twisted pair cable Please note that both interface and last C111A in a chain have to be terminated by egual resistors see next chapter 1 3 _Computer Interface Connection For any operation the C111A has to be linked to an external interface which is driven by a micro processor or computer The communication between the C111A and the interface is performed according to
4. board slot 25 and data transfer board slot 24 mounted in a double width CAMAC mechanic which has to be placed in the last two slots of the CAMAC crate right side The addressing and programming of the controller is performed by cycles of I O operations on the interface The A151A as well as the crate controller are prepared for interrupt based LAM servicing LAM lines may be enabled disabled by jumper setting removing on the controller board LAM mask The C111A accepts data and commands from the computer executes the CAMAC Commands NAF codes Z C I and transfers data back to the computer For high speed data transfer block mode operations with automatic CAMAC NAF code repeat are possible In multi crate systems broadcast calls to all controllers are simultaneously possible whereby each single controller can be switched on off for broadcast operations For all interfaces software driver libraries are enclosed In case of the IBM PC AT interfaces there exists a wide range of software support including a ready to run multi parameter data acquisition program WI E NE R MULTI 1 1 MULTI 1 1 is a powerful program for multi parameter CAMAC based experiments up to 23 modules 512 parameters It includes hardware set up experiment control fast data collection file access and management as well as monitoring operations data import and export and graphic display Supporting a wide range of usual CAMAC modules it allows to extend
5. to the C111A can be transmitted via the CP bus to the connected interface to allow an interrupt based LAM servicing The pin assignment of the 50 pin CP bus interface connector is given in the following table CAERL 29 08 97 Table 2 CP bus Interface connector pin assignment BusWRITE Bus WRITE a m _ ws las et so es i O C111A User s Manual CAERL 29 08 97 C111A User s Manual 2 CAMAC 2 1 Imtroduction to CAMAC CAMAC is a standard for Computer Aided Measurement And Control It bases on a parallel wired bus in the back of the CAMAC crate CAMAC dataway with 86 lines containing 24 read lines R0 23 24 write lines W0 23 17 control lines FO F16 AO A8 O X I C Z B P1 P2 2 strobe lines S1 S2 14 lines for voltage distribution 6V 12V 24V 115V GND 200V The CAMAC crate is prepared for 25 stations each eguipped with a 2x43 pin edge card connector on the dataway The first 24 slots are directly connected with all parallel wired lines on the dataway in the back of the crate For geographical addressing and reguest control each station has its own 2 lines N LAM going to the rightmost station of the crate controller station slot 25 There the individual address lines N are brought together as 24 station number lines N1 N24 and the reguest lines as 24 LAM lines Look At Me L1 L24 Via these special lines the access and request control to the CAMAC modules is organised
6. Technical Information M anual Revision n O 29 August 1997 MOD C 111 A CAMAC CONTROLLER CAEN will repair or replace any product within the guarantee period if the Guarantor declares that the product is defective due to workmanship or materials and has not been caused by mishandling negligence on behalf of the User accident or any abnormal conditions or operations CAEN declines all responsibility for damages or injuries caused by an improper use of the Modules due to negligence on behalf of the User It is strongly recommended to read thoroughly the CAEN User s Manual before any kind of operation CAEN reserves the right to change partially or entirely the contents of this Manual at any time and without giving any notice CAER 29 08 97 C111A User s Manual TABLE OF CONTENTS 1 CAMAC CRATE CONTROLLER C111A ccccscssssssssssssssssssssssssssssssssssssssssssssssssccees 1 S GENERATADESCRIPTION EEN OA E 1 12 FERONT PANE La Tn Ao NC chal TN NON DD 2 1 3 COMPUTER INTERFACE CONNECTION cccccccccccecececececececececececececececececececececececececesececseeceeacs 3 Di CAMA Cisseiissceceeccsccsdeseelouttvesiaessesussscesccsvessieesesssvesssssvsteddscesesdsssossesescovesdscssesessacevecsssssssvsuscoses 5 2 1 INTRODUCTION TO CAMA Contatti dias 5 2 2 CAMAC DATAWAY TIMING i i SE idea ees a eds daa oda ids do de eden duds ed 6 DS LOOKS A ME AN o oia 6 2 4 CITA CAMAGC FUNCTIONS HT i FR 7 3 C111A OPERATION
7. d 16 bit high data byte 8 bit The status and control byte SCB comprises the information on bus on off the status of CAMAC inhibit line and on the controller LAM setting additional enable disable LAM reguest to interface note LAM jumper setting within C111A to enable disable for selected modules A pending LAM can be read from the interface A151A status register only in case of correct jumper setting for the LAM giving station and if the LAM servicing is enabled by calling sub mode 12 The latter is indicated by SCB bitl 1 Only the first 3 SCB bits are used Opposite to the first two bits for Inhibit and LAM setting status which only have read character bit 2 can be used for read and write bus on off The crate is on if bit2 O Table 8 SCB bit assignment read read read read write Inhibit LAM Bus not used IRO on off 10 CAER 29 08 97 C111A User s Manual The detailed description as well as the direct code for the most popular programming languages are given within the interface manuals In case of the high speed interface A151A TURBO the sequence of mode callings is reduced by using higher integrated PLD s to reach shortest access and data transfer times 11 CAER 29 08 97 C111A User s Manual 4 Installation 4 1 C111A Installation Switch OFF the CAMAC crate and insert the C111A into the rightmost slots of the crate 24 25 Be sure that the CAMAC crate Power is off if inserting or rem
8. ed with N F A Data operation Command amp Busy N A F B Data amp Status R W O X Fig 2 Dataway timing for an addressed operation The minimum cycle time for this operation is lus typically 1 2 us In case of reading data the status of the read lines is normally taken with S1 For some special modules it may be necessary to do this with S2 Tthe jumper JA1 Strobe Selection has to be changed to the left position The non adressed operation Z C I differs to the scheme shown above by using only strobe S2 2 3 Look At Me LAM If a CAMAC module needs controller support for instance for data read out it can generate a LAM Look At Me Normally for each station the LAM generation can be enabled F 26 or disabled F 24 within the module The LAM request can be detected wether at the generating module by calling F 8 Q 1 X 1 if LAM pending or by checking the controller interface status register Additionally a hardware LAM mask can be defined on the C111A board by setting or removing jumpers 2x23 jumper array LAM For each station which should be able to generate a LAM request a jumper has to be installed CAER 29 08 97 C111A User s Manual 2 4 C111A CAMAC Functions Inserted into the CAMAC crate on the rightmost position slot24 25 as described above the C111A can perform the following operations NAF codes station sub address function for module control read write data O X resp
9. ngle branch systems is 1 The last two bits 14 15 are not used Allowed values for the crate number are in the range between 0 and 14 for the several stations or 15 broadcast call to all stations The PMO setting is stored at C111A Primary Mode 1 PMI sets the sub mode at C111A The sub mode SM chooses the controller function for CAMAC access The sub mode are defined as follows Table 6 C111A Sub modes Primary Mode 2 PM2 gives data to the C111A and or to the modules via the CAMAC dataway as crate branch number 16 bit data word NAF code 16 bit word low data word 16 bit high data byte 8 bit CAERL 29 08 97 C111A User s Manual The NAF code includes the station number N of an addressed module the sub address A and the function number F It is decoded according to the following bit assignment Table 7 NAF code station N function F sub address A ni o na ns iol ri ro ra es io ar A2 as asl s ls The last bit S corresponds to an immediate CAMAC cycle on a NAF load If this bit is 0 the NAF load in the C111A will not cause a prompt CAMAC cycle S 0 is necessary write data to the dataway For read operations one has to set S 1 The NAF code is stored within the C111A This feature allows a block read or write function with automatically NAF repeat Primary Mode 3 PM3 reads data from the C111A and or from the modules via the CAMAC dataway as status byte 8 bit low data wor
10. onse setting of Z initialise C Clear or I Inhibit getting of LAM reguest Additional functions are block mode with automatical NAF code repeat broadcast calls bus on off for broadcast calls interrupt generation in the interface IRO on LAM reguest enable disable IRO LAM servicing All operations and functions are described within the following chapter and in detail combined with programming examples within the interface manuals CAERL 29 08 97 C111A User s Manual 3 C111A Operation Description The C111A access is performed via the interface by calling several modes which are for selection of read write operation or special controller functions These modes are primary modes PM defining the type of operation and sub modes SM for the controller functions The functions of the primary modes are given in the following table Table 4 C111A Primary modes PM set crate branch write data CAMAC cycle read data Primary Mode 0 PMO is used for setting of crate and branch number The following data word GAW Geographical Address Word defines the crate number according to the bit assignment given in the next table Table 5 Bit assignment of GAW for Primary mode 0 O erate number 200 10 r CAERL 29 08 97 C111A User s Manual The first 3 bits correspond to the crate number binary decoded The branch is directly given by the bits 4 13 The standard value for the branch in si
11. oving any CAMAC module or the CIIIA controller If a change of the hardware LAM mask is reguired one has to do this before installing the C111A in the CAMAC crate Open the left side of the C111A remove the side panel and set remove the LAM jumpers on the C111A board The LAM line is enabled disabled if the corresponding jumper is inserted removed By standard all LAM lines are enabled 4 2 Interface Installation Prepare and insert the interface into the computer system In case of A151A check the I O address and IRO number for validance and insert the board into a free IBM PC slot of full size 16 bit slot for 16 bit operations If only a 8 bit slot or XT computer is available change the jumper setting for 8 16 bit access jumper 1 17 The jumper 18 has to be installed for operation with CILIA By the help of switch 1 the basic I O address is fixed The standard value for I O base address is hex380 Note that installed devices or PC cards mouse network cards printer often use this VO range too In this case one has to look for another free range If the C111A can not be accessed change the used I O address on the A151A card and in the used CAMAC software 4 3 Initialisation For correct operation the C111A interface system has to be initialised first by setting the geographical address of the called controller Further the initial conditions for inhibit line I set off and IRO on LAM should be defined see next chapte
12. rs At the end of initialisation a CAMAC initialise Z should be performed see next chapter 12 CAERL 29 08 97 C111A User s Manual 5 APPENDIX A List of components B Electrical drawings and component allocation plots 13 CAERL 29 08 97 Component list CAMAC Crate Controller C111A ll I Jew 74LS173 1 74ALS573 1 s563 8 IC3738394041424344 74LS32 1 Ea 2627283031323 ao i Ja y PR msk 2 ne Oo g8rismioo 6 RN245 14 C111A User s Manual CAERL 29 08 97 socket DIL20 9 dCsoke gt ell 34x 34x board 24 15 C111A User s Manual
13. the CP Communication bus Protocol RS422 The CP bus consists of 16 bi directional data lines and 7 control lines used for geographical addressing of the installed C111A as well as for control and data transfer strobes All signals are transferred as bipolar TTL signals Both the C111A and the used interface have to be terminated to enable correct function during the high speed data transfer The crate controller termination is performed with resistor networks RN2 RN4 RN5 Two types of cable termination are provided Table 1 Termination resistor types factory prepared DIL 220 Ohm 2 x SIL 8 1 x 100 Ohm Both ends of the link i e C111A and interface have to be terminated with equal resistors Note that in case of multi crate systems only the last C111A in the chain has to be terminated Maximum tested distances between crate controller and interface are 30 metres in case of 50 pin flat cable or up to 200 metres using twisted pair cable Up to now 2 different interfaces are available for the C111A A151A 8 16 bit IBM XT AT interface card A151A Turbo high speed 16 bit IBM AT interface card All interfaces allow multi crate operations i e up to 15 crates can be controlled by one interface Further it is possible to combine as many interfaces in one computer system as there are free slots for the interface Thus enhanced CAMAC systems can be created all controlled by one computer system Further the LAM request
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