CAEN C117b
Contents
1. All the other possible error codes from the SLAVE module have the format FFnn where nn can be any number 17 CAE 17 01 96 C117B User s Manual APPENDIX A SOFTWARE BUGS AS OF SEPT 1992 This appendix contains the software bugs recognized as of September 1992 If one of the SLAVE in the H S CAENET Network has the address code 0 the Network communications do not work Do not use SLAVE address code 0 A 1 CAE 17 01 96 117 Users Manual APPENDIX B ELECTRICAL DIAGRAMS B 1 CAE 17 01 96 117 Users Manual APPENDIX C COMPONENT LIST AND LOCATIONS C 12. CAMAC functions allow the User to easily control the serial communication on the H S CAENET network according to the typical MASTER SLAVE communication protocol where the CAMAC Crate Controller assumes the MASTER function It is composed of a collection of registers for the operation control and two memory buffers for the transmitted and received data packets arranged in a 16 bit FIFO 256 words deep When the H S CAENET operation fails the on board Control logic generates error messages that are stored in the memory buffer for the received data As soon as the data packet or the error message is available in the receive buffer a LAM signal is generated if enabled The communication line uses a simple 50 Q coaxial cable as a physical medium The data transfer rate is 1 MBaud A functional Block Diagram is shown in Fig 1 1 DATAWAY IN 17 01 96 C117B Users Manual H S CAENET NODE H S CAENET SERIAL CAMAC TERFACE INTERFACE Reset CONTROL H S CAENET INTERRUPT LOGIC LAM Line Rst Set Fig 1 1 Mod C117B Block Diagram Front Panel Push Button CAE 17 01 96 117 Users Manual 2 SPECIFICATIONS 2 1 PACKAGING Single width CAMAC module 2 2 EXTERNAL COMPONENTS Refer to Fig 2 1 CONNECTORS No 1 SERIAL LINE 00
3. User reads the SLAVE response or a C117B error message for example if the 117 does not receive SLAVE response within period of 500 msec it stores the code FFFF in the Buffer see Tab 5 3 16 CAE 17 01 96 117 Users Manual 5 4 SLAVE TO MASTER DATA COMPOSITION The answer data coming from the SLAVE or a Control Logic error message is stored into the C117B Receive Data buffer The User can get it by performing subsequent F 0 Functions The following Table shows the structure of the SLAVE data packet Table 5 2 SLAVE to MASTER Data Composition Order CAMAC Datum Meaning Function 0 Error Code Error code 2to255 F 0 N value Eventual Parameter value The first data of the packet is read and checked by the Control Logic as shown 3 4 4 The Error codes are described in Tab 5 3 5 5 ERROR CODES DESCRIPTION The Error codes are described in the following Table Table 5 3 Error Codes Datum Meaning Hex 0 Successful operation SLAVE message FFFD No data to be transmitted it has tried to start a transmission with the Transmit data Buffer empty Control logic error message 9eFFFE The H S CAENET Controller identifier is incorrect Control Logic error message 9eFFFF The addressed SLAVE does not exist This message are gener ated after a period of 500 msec Control Logic error message
4. oaa aanas adana a iaa 3 2 9 POWER REQUIREMENT S ette oed tente 3 3 OPERATING MODES ie y a nah eee ve nace dae e vae aoo a antec 5 3 1 H S CAENET NETWORK OPERATION eese nnne nnne 5 3 2 H S CAENET NODE 4 6 3 3 THE MOD 117 H S CAENET CAMAC CONTROLLER 6 3 4 MOD C117B OPERATING 6 7 3 4 1 MOD GTTZB RESET eie ene ERR et nee eee At 7 3 4 2 DATA PACKET STORAGE nnne 7 3 4 8 START TRANSMISSION pp 8 3 4 4 WAITING FOR THE SLAVE 8 3 4 5 READING THE RESPONSE pp 9 3 4 6 ENABLE DISABLE LAM GENERATION 9 3 5 C117B SLAVE COMMUNICATION SEQUENCE 10 CAMAC F NGTIONS exec ee ete 11 4 1 F 16 N FUNCTION Write Transmit Data Buffer 12 4 2 F 0 N FUNCTION Read Receive Data 12 4 3 F 17 N FUNCTION Start Transmission RN 13 4 4 F 8 N Test LAM Line pp 13 4 5 9 C Z Reset Module 13 4 6 F 24 N Disable the LAM Generation 14 4 7 F 26 N Enable LAM Generation pp 14 5 C A E N COMMUNICATION PROTOCGOL Ne 15 5 1 H S CAENE
5. CTION Start Transmission 17 Function enables the 117 Control Logic to transmit on the cable the data stored in the Transmit Data Buffer If this operation is performed with the Transmit Data Buffer empty the Control logic stores an error message in the Receive Data Buffer error FFFD see Table 5 3 The Q response indicates if the Start Transmission command has been recognized or not by the Control Logic Q 1 means that the Transmit command has been successfully recognized and that a valid response will be available in the Receive Data Buffer within a period of 500 msec the C117B Control Logic waits up to 500 msec for the SLAVE response If no data packet is received by this period it stores in the Receive Data Buffer the error code FFFF see Table 6 21 Q 0 means that the H S CAENET Node is not able to transmit data This may happen if the H S CAENET Node is active it is transmitting a previous data packet or it is receiving the SLAVE response 4 4 F 8 N Test LAM Line The Q response to this CAMAC Function allows to test the LAM line Q 1 LAM asserted Q 0 LAM not asserted 4 5 9 Z Reset Module 7 commands the 9 Function cause the 117 to Restart mode this produces the following operations the buffers are cleared the LAM is cleared the LAM is disabled every data transfer is aborted the C117B does not a
6. T NETWORK FOR REMOTING CONTROL 15 5 2 H S NETWORK IMPLEMENTATION CAEN APPROACH 15 5 3 MASTER SLAVE DATA COMPOSITION pp 16 5 4 SLAVE TO MASTER DATA COMPOSITION 17 5 5 ERROR CODES DESCRIPTION pp 17 APPENDIX A SOFTWARE BUGS AS OF SEPT 1992 A 1 APPENDIX B ELECTRICAL DIAGRAMS rennen nnne B 1 APPENDIX C COMPONENT LIST AND LOCATIONS RN C 1 LIST OF FIGURES Fig 1 1 Mod C117B Block Diagram 2 Fig 2 1 Mod C117B Front nnns 4 CAE 17 01 96 117 Users LIST TABLES Table 4 1 Mod 117 Functions 11 Table 5 1 MASTER to SLAVE Data Composition pp 16 Table 5 2 SLAVE to MASTER Data Composition 2 0 000011 17 Table 5 3 Error iioii eder ead iet Detto pasal os 17 CAE 17 01 96 117 Users Manual 1 DESCRIPTION 1 1 FUNCTIONAL DESCRIPTION The Model C117B HIGH SPEED H S CAENET CAMAC CONTROLLER has been designed to control H S network through the CAMAC bus It houses H S CAENET Node and a Control Logic microprocessor based which integrates the functions of Node controller and Network error handler Standard
7. Technical Information Manual Revision n 0 17 January 1996 MOD C117B HS CAENET CAMAC CRATE CONTROLLER MANUAL REV 0 will repair or replace 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 C CAEN reserves the right to change partially or entirely the contents of this Manual at any time and without giving any notice Disposal of the Product The product must never be dumped in the Municipal Waste Please check your local regulations for disposal of electronics products CAER 17 01 96 C117B User s Manual TABLE OF CONTENTS TABLE OF CONTENTS ettet e ute otl eet i LIST OF FIGURES Sr eid ere o Sere SS i EIST OF TABLES u 22 betreten cedar mua ii 1 DESCRIPTION 122 Irt Ite He ci i 1 1 1 FUNCTIONAL DESCRIPTION pp 1 2 SPECIFICAT ON Da a a a a aa A Aa Aea E aA Sa hanea DEA E Aa AAEE EA 3 RPRACKAGING PEE EE 3 2 2 EXTERNAL COMPONENTS eane taena i
8. a central controller 5 2 H S CAENET NETWORK IMPLEMENTATION CAEN APPROACH CAEN has developed a transmission protocol via H S CAENET line that permits the monitoring and control of many CAEN units from a single controller This network has the following structure and protocol The transfers between H S CAENET Nodes take place according to the typical MASTER SLAVEs communication There is a single MASTER H S CAENET Controller The SLAVEs are daisy chained on the network and are identified by an address code from 0 to 99 the address is usually selectable via thumb wheel switch located on the Front panel of the module the H S CAENET MASTER starts the transmission all the SLAVEs receive the data and only the addressed SLAVE then accesses the serial line to transmit the data requested by the MASTER In this way is possible from a single point it to control up to 100 SLAVEs 15 17 01 96 C117B Users Manual 5 3 MASTER TO SLAVE DATA COMPOSITION The MASTER to SLAVE data have to be written into the Transmit Data buffer by performing subsequent F 16 N functions as follows Table 5 1 MASTER to SLAVE Data Composition Order CAMAC W16 to W1 Meaning Function HEX 1 F 16 N 0001 H S CAENET Controller identified code 2 F 16 N 00XX Crate Number 3 F 16 N Code Code of the operation to be performed 4 to 256 16 Eventual set values In the C117 B Receive Data Buffer the
9. ccept commands It remains in this status for about 3 msec 13 CAE 17 01 96 117 Users Manual 4 6 F 24 N Disable the LAM Generation This CAMAC Function disables the LAM generation this means that when the Control Logic enables the CAMAC reading at the end of a data packet reception the LAM signal will not be generated 4 7 F 26 N Enable the LAM Generation This CAMAC Function enables the LAM generation this means that when the Control Logic enables the reading at the end of a data packet reception the LAM signal will be asserted This function must be performed after the Power on or after a Reset operation C Z F 9 N and the pressing of the Front Panel push button because these operations disable the LAM generation 14 CAE 17 01 96 117 Users Manual 5 COMMUNICATION PROTOCOL 5 1 H S CAENET NETWORK FOR REMOTING CONTROL H S provides a unique way of remotely controlling passive electronic modules modules that have been designed for specific data acquisition purposes and therefore have no access to any bus like CAMAC or VME NIM modules Delay Units Attenuators Amplifiers MO registers as well as H V Supplies have several parameters which need to be adjusted under computer control many CAEN units house an H S CAENET Node inside the module that allows the possibility of linking several devices of different types and functionality with
10. e SLAVE response data packet Transmit Data Buffer full the maximum number of data stored is 256 CAE 17 01 96 117 Users Manual 3 4 3 START TRANSMISSION 17 Function enables the Control logic to transmit on the cable the data packet stored in the Transmit data buffer The logic first check if the Buffer is empty if not the logic sets the 5 Node in the Transmit mode and the data packet is transmitted on the cable If the Buffer is empty the control logic does not activate the transmission and write into the Receive data buffer an error code error FFFD see Tab 5 3 The Q response indicates whether the Start Transmission command has been recognized or not by the Mod C117B Q 1 means that the Transmit command has been successfully recognized and that a valid response can be read in the Receive Data Buffer within a maximum period of 500 msec SLAVE Response Time out Q 0 means that the H S CAENET Node is not able to transmit data This may happen if the H S CAENET Node is active it is transmitting a previous data packet or it is receiving the SLAVE response 3 4 4 WAITING FOR THE SLAVE RESPONSE The Control logic waits for the SLAVE Response for about 500 msec if no data packet is received within this period the Control logic stores an error code error FFFF see table 5 3 in the Receive Data Buffer If a data packet is received from the cable within the SLAVE Respons
11. e Time out the Control logic checks if it has the correct header if not it first clears the Receive Data Buffer and then stores an error code in it error FFFE see table 5 3 After these operations the Receive Data Buffer contains valid data an error code or the SLAVE response for the CAMAC Crate Controller that has initiated the H S CAENET Communication At this point the Control logic enables the CAMAC reading Q 1 on F 0 N and if the LAM generation is enabled a LAM signal is asserted on the CAMAC dataway CAE 17 01 96 117 Users Manual 3 4 5 READING THE RESPONSE The User afterthe Transmission of the data packet expects a response in the Receive Data Buffer the content of the Receive Data buffer is read by performing 0 Functions the required data are present on the READ line R lt 1 16 gt The presence of valid data can be recognized in two different ways in polling mode or by the LAM signal Polling mode After the Start Transmission operation the User reads the content of the Receive Data Buffer by performing F 0 N Functions The Q response indicates whether the data read is valid or not Q 1 means valid data Q 0 means no valid data After the F 17 N Function the F 0 Function must be repeated until a 1 response is obtained LAM signal The generation of the LAM signal means that valid data are present in the Receive Data Buffer The readout is over when Q 0 Q STOP read
12. ged in a FIFO logic 16 bit wide the data packet transmitted is composed of 16 bit words as shown in Tab 5 1 data stored in this buffer by performing or 16 Functions with the data to be written asserted on the WRITE lines W lt 1 16 gt The Q response to the F 16 N Function indicates if the datum has been stored or not in the Transmit Data Buffer Q 1 the data has been stored in the Transmit Data Buffer Q 0 the Transmit Data Buffer is not available for data storage This may happen in the following cases H S Node active it is transmitting a previous data packet or it is receiving the SLAVE response data packet Transmit Data Buffer full the maximum number of data stored is 256 4 2 F 0 N FUNCTION Read Receive Data Buffer The Receive Data Buffer is the buffer where the H S CAENET Node automatically stores the data packet received from the SLAVE or where The Control Logic stores the error codes if the H S CAENET operation has failed It is arranged in a FIFO logic 16 bit wide the data packet received is composed of 16 bit words as shown in Tab 5 1 The data contained in the Receive Data buffer are read by performing 0 Functions The required data are present on the READ line R lt 1 16 gt The Q response indicates if the data read is valid or not Q 1 valid data Q 0 no valid data 12 CAE 17 01 96 117 Users Manual 4 3 F 17 N FUN
13. gic error message go to the Read Response section Read response perform an F 0 N Function if Q 1 accept the data read and repeat the operation if Q 0 discard the data read and exit the Receive Data Buffer is empty else 10 CAE 17 01 96 117 Users Manual 4 FUNCTIONS standards functions listed in Table 4 1 allow the User to perform the required control and setting operations on each SLAVE in the H S network X response is generated for all valid function Q response is generated for each valid function unless is otherwise specified Table 4 1 Mod C117B CAMAC Functions F 0 N Reads the data stored in the Mod C117B Receive Data buffer Q response while the buffer contains data F 8 N Tests the LAM line Q response if LAM is true F 9 N Resets the module clears buffers and LAM disables the LAM line aborts data transfer F 16 N Stores the data into the Mod C117B Transmit Data buffer Q response until the buffer is full 256 16 bit words F 17 N The Transmit data buffer content is transmitted on the cable F 24 N Disables the LAM line F 26 N Enables the LAM line C Z Same as 9 11 CAE 17 01 96 117 Users Manual 4 1 F 16 N FUNCTION Write Transmit Data Buffen The Transmit Data Buffer is the buffer that is loaded with the data packet to transmit it is arran
14. le to detect collisions on the cable for this reason it is important to avoid line contention i e the Nodes should not attempt to transmit at the same time Usually transfers between H S CAENET Nodes take place according to the typical MASTER SLAVES communication there is a single H S CAENET MASTER that initiates the transmission all the SLAVEs receive the data and only the SLAVE addressed then accesses the serial line to transmit the data requested by the MASTER The maximum data packet length is 512 bytes An external clock source provides the basic time reference in the Node the clock frequency is three times the data transfer rate Actually the clock frequency used in the H S CAENET network is 3 MHz 1 MBaud transfer rate The Node is seen as an 8 bit peripheral composed of a collection of registers and two memory buffers arranged in FIFO logic It generates an interrupt H S CAENET interrupt upon the completion of a transmission of a data packet the reception of a data packet when the RX FIFO has been completely unloaded CAE 17 01 96 117 Users Manual 3 2 H S NODE OPERATION The basic operation of the H S CAENET Node consists in 3 distinct modes Transmit Receive and Restart mode In the Transmit mode the Node accesses the data stored in the TX FIFO and transmits them on the cable In the Receive mode the serial packet is stored in the RX FIFO In Restart mode the Node does n
15. ot execute any commands all the TX and RX buffers are cleared and the H S CAENET interrupt is removed it remains in this mode until it detects that the line is clear 3 3 THE MOD C117B H S CAENET CAMAC CONTROLLER The Model C117B HIGH SPEED 5 CAMAC CONTROLLER has been designed to easily control an H S CAENET network through the CAMAC bus It houses an H S CAENET Node and a Control logic microprocessor based with dedicated firmware that integrates the functions of Node controller with Network error reporting and H S CAENET interrupt handler The Control logic directly controls the on board H S CAENET Node Its multiplexing logic interfaces the 16 WRITE and READ lines with the two 8 bit FIFOs so that they are seen by CAMAC as 16 bit wide buffers Transmit and Receive Data Buffer It receives commands from any computer connected to CAMAC In such a way that few CAMAC Functions allow the User to easily control the serial communication on the H S CAENET network The communication is performed according to the typical MASTER SLAVE communication protocol where the CAMAC Crate Controller assumes the H S CAENET MASTER function It is composed of a collection of registers for the operation control and two memory buffers for the transmitted and received data packets arranged in a 16 bit FIFO 256 word deep see Fig 1 1 When the H S CAENET operation fails the on board Control logic generates error messages that are sto
16. out operation The LAM is cleared whenever the last datum has been read 3 4 6 ENABLE DISABLE LAM GENERATION It is possible to enable disable the C117B LAM generation in the following way ENABLE by performing an F 26 N Function DISABLE by performing an F 24 N Function by performing an F 9 N Function by performing a C Command by performing a Z Command by pushing the Front Panel push button RESET At power on the LAM generation is disabled CAE 17 01 96 117 Users Manual 3 5 C117B SLAVE COMMUNICATION SEQUENCE operations previously described summarized in the following report write the data packet in the Transmit Data Buffer in the packet is contained the H S CAENET address of the SLAVE see Tab 5 1 for the data structure for each data perform an F 16 N Function if Q 1 the data is stored in the buffer error else Transmit the data packet perform an F 17 N Function if Q 1 the 117 H S Node enters in the Transmit mode and the data packet stored is transmitted on the cable error Wait for the SLAVE response if LAM is enabled else wait for 117 LAM when LAM is asserted go to the Read response section perform Function if Q 0 discard the data and repeat the operation if Q 1 accept the data read it may be the first data of the SLAVE response data packet or a Control Lo
17. red in the Receive Data Buffer As soon as the data packet or the error message is available in the Receive Data Buffer a LAM signal is generated if enabled CAE 17 01 96 117 Users Manual 3 4 MOD C117B OPERATING MODES The following paragraphs describe the various operations that can be performed through CAMAC to accomplish an H S CAENET communication 3 4 1 MOD C117B RESET It is possible to reset the 117 B in these ways by performing an F 9 N Function by performing a C Command by performing a Z Command by pushing the Front Panel push button After one of these operations the C117B enters in Restart mode this causes the following operations the buffers are cleared the LAM is cleared the LAM is disabled every data transfer is aborted the C117B does not accept commands It remains in this status for about 3 msec 3 4 2 DATA PACKET STORAGE The data to be transmitted are stored in the Transmit Data Buffer by performing one or more F 16 N Functions with the data asserted on the WRITE lines W lt 1 16 gt The Q response to the F 16 N Function indicates whether the datum has been stored or not in the Transmit Data Buffer Q 1 dta has been stored in the Transmit Data Buffer Q 0 the Transmit Data Buffer is not available for data storage This may happen in the following cases H S CAENET Node active it is transmitting a previous data packet or it is receiving th
18. type 50 Q connector connector for the H S CAENET communication line The DATA LED is On when the H S CAENET Node is active DISPLAYS No 1 DATA red LED is On when the H S CAENET Node is active SWITCHES No 1 RESET push button by pushing this button the C117B enters in restart mode this causes the following operations the buffers are cleared the LAM is cleared the LAM is disabled every data transfer is aborted the C117B does not accept any commands It remains in this status for about 3 msec 2 3 POWER REQUIREMENTS 6V 1 2A 17 01 96 C117B Users Manual 5 CAENET CAMAC CONTROLLER Mod C117B FARBEN RESET Push buton lt HS CAENET Active LED SERIAL LINE H S CAENET Connector Fig 2 1 Mod C117B Front Panel CAE 17 01 96 117 Users Manual 3 OPERATING MODES 3 1 H S CAENET NETWORK OPERATION H S CAENET Network is a send and receive half duplex system it permits asynchronous serial transmission of data packets along a simple 50 Q coaxial cable Several devices H S CAENET Nodes are able to share the same media to transmit and receive data Each Node is able to receive the serial data packet and store it automatically in the RX FIFO and transmit the data contained in the TX FIFO see Fig 1 1 Both FIFOs are 512 byte deep The H S CAENET Node listens for clear coax before transmitting but it is not ab
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