ISC3N - Gurley Precision Instruments
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1. K2 Data Transceivers IOB15 0 EXTi 1 1 IOCP I O Control Port IOP 16 bit I O Port 1 1 1 DOCP Digital Output i Control Port z DB9x ESDIP Error Status and Y 1 Digital Input Port Encoder 1 X Input X LI I i Latch 1 SP Status Port 1 D uc 1 i 3 5 l DB9Y Counter S iL i 1 a El i Encoder MCP Mode Control Port Input Y i 5 g i i Equality Comparator 5 5 2 Q 1 TSIEP Trigger Status and 9 i DB9Z l Interrupt Enable Port Register i r Encoder 1 1 Input Z 1 1 CP Control Port Trigger Control Logic i 1 1 i 1 i PCI Target Interface i i PCI bus ISC3N PCI 3 Gurley Precision Instruments CONNECTOR PIN ASSIGNMENT DB9X Y Z Encoder Connectors Sub D DB9 female 5V TTL 5V TTL The EXT inputs are normally used as external triggers but may also be used as additional general purpose digital inputs The IOBO 15 pins are programmable I O lines divided in four groups by four Each group may be programmed to function as inputs or as outputs The pins IOBO 2 ma2. offset 21h T 6 5 4 3 2 1 0 ERIE EQIE TRE TSZ TSY TSX TSi Trigger Source 0 Reference Impulse RI 1 External Trigger IN ERIE Error Interrupt Enable 0 Error interrupt disabled 1 Enable interrupt on quadrature decoder error ERR ISC3N PCI 6 Gurley Precision Instruments EQIE Equality Interrupt Enable 0 Equality interrupt disabled 1 Enable interrupt on equality C R TRIE Trigger Interrupt Enable 0 Trigger interrupt disabled 1 Enable trigger interrupt T MCP Mode Control Port offset 22h T 6 5 4 3 2 1 0 pt ZMO Mt YMO XMa XMO iM1 iMO Counter Mode Continuous counting mode Latch counter data on trigger T Start counter after trigger T Latch all counters on equality C R Ole oO The iM1 MO bits control the count enable MO and latch function M1 of the selected channel except when MO M1 11 they also affect other two counters SP Status Port offset 23h Ti Logic High indicates that the corresponding trigger signal has been detected Bits are cleared by writing zeros to them C Ri Logic High indicates that the counter data equalled the corresponding register Bits are cleared by writing zeros to them ISC3N PCI 7 Gurley Precision Instruments ESDIP Error Status and Digital Input Port offset 24h T 6 5 4 3 2 1 0 ERRZ ERRY ERRX
3. IZ NY INX ERRi Logic High indicates that the built in quadrature decoder detected an invalid transition of the encoder AB input signals Bits are cleared by writing zeros to them INi These bits are read only and their values correspond to the logic level of the respective K4 connector input pins EXT DOCP Digital Output Control Port offset 25h T 6 5 4 3 2 1 0 ocz ocy ocx 3 d S OCi Digital Output Control 0 Connector pins IOB 2 0 correspond to bits in VO PORT 1 Connector pins IOB 2 0 correspond to C RZ C RY C RX status bits in SP respectively This feature enables routing equality status to the outside world via IOB 2 0 port signals ISC3N PCI 8 Gurley Precision Instruments SOFTWARE REFERENCE EIPCI32 DLL functions description The EIPCILibOpen opens and allocates the resources used by the driver This function must be matched with a call to EIPCILibClose Int EIPCILibOpen Parameters none Result of 0 OK 2 Driver can not be opened NOTE The EIPCILibOpen function has to be called first to open the driver The EIPCILibClose closes and releases the resources used by the driver VOID EIPCILibClose Parameters none NOTE This function must be matched with a call to EIPCILibOpen ISC3N PCI 9 Gurley Precision Instruments The ISC3N initalization routine The EIPCIInit function Detects the installed card resets I O Port and I O Con
4. D EIPCIResetAxis BYTE Axis Axis selected Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis ISC3N PCI 12 Gurley Precision Instruments The EIPCISetCountingMode function sets the axis counting mode VOID EIPCISetCountingMode BYTE Axis Axis selected BYTE CountingMode Counting mode selected Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis CountingMode CountingMode byte defines the counting mode of the selected axis 0 Continuous Counting Mode 1 Trigger Latched Counting Mode 2 Trigger Started Counting Mode 3 Equality Latched Counting Mode The EIPCIGetEqualityStatus function returns C R DO D2 bits of the Status Port BYTE EIPCIGetEqualityStatus Parameters none The EIPCIResetEqualityStatus function resets C R DO D2 bits of the Status Port VOID EIPCIResetEqualityStatus Parameters none The EIPCIGetTriggerStatus function returns T D4 D6 bits of the Status Port BYTE EIPCIGetTriggerStatus Parameters none ISC3N PCI 13 Gurley Precision Instruments The EIPCIResetTriggerStatus function resets T D4 D6 bits of the Status Port VOID EIPCIResetTriggerStatus BYTE Axis Axis selected Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis The EIPCISetTriggerSource function selects Trigger S
5. Gurley Precision Instruments ISC3N ENCODER INTERFACE WITH DIGITAL I O PCI Version USER S MANUAL Ingenuity work Gurley Precision Instruments INTRODUCTION The ISC3N card is a PCI bus compatible Encoder Interface with Digital Inputs and Outputs that provides a direct transfer of position values from incremental encoders to the PC without any external position readout units The additional digital input output lines make the ISC3N card ideal for use in motion control systems measurement applications position regulations etc It is possible to connect up to three incremental encoders and 16 digital inputs and outputs to the PC with a single ISC3N card FEATURES Counting in positive and negative direction Trigger initiated counting Trigger latched counting Position latched counting Reset Preset Counting error detection phase error 16 programmable I O lines divided in four groups 3 output lines may be programmed to output equality status bits 3 inputs as External triggers or additional inputs Interrupt request may be generated by Trigger Error Detection or Position Equality Fast industry standard PCI interface ISC3N CHARACTERISTICS Three 32 bit counters Input signals from incremental encoders 1 A B RI 5V TTL compatible 2 At A B B RI RI RS422 compatible Digital input filters 2 stages Input pulse width low or high tw 60 ns min see figure below Phase difference between any A and B signal t
6. Port is set to 1 while reading position data from the Latch After reading the data the DL bit remains set to 1 1 DL bit of Control Port is set to O while reading position data from the Latch After reading the data the DL bit is set to 1 2 DL bit of Control Port is set to O while reading position data from the Latch After reading the data the DL bit remains set to 0 The EIPCIPresetAxis function presets the Counter of the selected axis with signed 32 bit Value VOID EIPCIPresetAxis BYTE Axis Axis selected int Value Preset Value Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis Value Preset Value ISC3N PCI 11 Gurley Precision Instruments The EIPCIReadRegister function returns the axis Register Value as a signed 32 bit value int EIPCIReadRegister BYTE Axis Axis selected Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis The EIPCIPresetRegister function writes signed 32 bit Value to the axis Register Corresponding C R bit of the Status Port is set when the Counter data equals the Register data VOID EIPCIPresetRegister BYTE Axis Axis selected int Value Preset Value Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis Value Preset Value The EIPCIResetAxis function presets the axis Counter with value of 0 VOI
7. ource VOID EIPCISetTriggerSource BYTE Axis Axis selected BOOL ExternalTrigger External trigger flag Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis ExternalTrigger ExternalTrigger flag defines Trigger Source of the selected axis FALSE the Reference Impulse as Trigger Source TRUE the External Trigger as Trigger Source The EIPCIGetErrorStatus function returns ERR D4 D6 bits of the Error Status and Digital Input Port BYTE EIPCIGetErrorStatus Parameters none ISC3N PCI 14 Gurley Precision Instruments The EIPCIResetErrorStatus function resets ERR D4 D6 bits of the Error Status and Digital Input Port VOID EIPCIResetErrorStatus Parameters none The EIPCISetIOP function writes the 16 bit Value to the I O Port VOID EIPCISetIOP WORD Value Value Parameters Value Byte value written to the I O Port The EIPCISetIOCP function writes the Value to the I O Control Port VOID EIPCISetlOCP BYTE Value Value Parameters Value Byte value written to the I O Control Port The EIPCISetCP function writes the Value to the Control Port VOID EIPCISetCP BYTE Value Value y Parameters Value Byte value written to the Control Port ISC3N PCI 15 Gurley Precision Instruments The EIPCISetTSIEP function writes the Value to the Trigger Select and Interrupt Enable Port VOID EIPCISe
8. ransitions tags 30 ns min see figure below Digital Inputs and Outputs 5V TTL compatible buffered 47kO pull ups Output current 25 mA max Power consumption 200 mA max IRQ line INTA PCI 5V 32 bit 33MHz compatible PCI 3 3V optional ISC3N PCI 1 Gurley Precision Instruments Figure 1 Encoder input signal requirements DESCRIPTION Each encoder input channel of the ISC3N consists of a line receiver quadrature decoder with phase error detection control logic for trigger evaluation 32 bit counter 32 bit latch 32 bit register and 32 bit equality comparator It is possible to reset and preset the counter The data from the counter is accessed only through the latch The ISC3N can be programmed to operate in several different modes counter counts independently of any trigger signals counter starts counting when the trigger signal is detected latch follows the counter that is the latch is transparent counter data is latched whenever the trigger signal is detected all counters are latched whenever selected counter data equals to register data latching at desired position INSTALLATION Power off your PC and insert the ISC3N card in a free PCI expansion slot Upon power up the operating system should detect the card Then simply follow the Driver Installation Wizard ISC3N PCI 2 Gurley Precision Instruments
9. rs none ISC3N PCI 17 Gurley Precision Instruments The EIPCIGetMCP function returns DO D7 bits of the Mode Control Port BYTE EIPCIGetMCP Parameters none The EIPCIGetSP function returns DO D7 bits of the Status Port BYTE EIPCIGetSP Parameters none The EIPCIGetESDIP function returns DO D7 bits of the Error Status and Digital Input Port BYTE EIPCIGetESDIP Parameters none The EIPCIGetDOCP function returns DO D7 bits of the Digital Output Control Port BYTE EIPCIGetDOCP Parameters none ISC3N PCI 18
10. tTSIEP BYTE Value Value Parameters Value Byte value written to the Trigger Select and Interrupt Enable Port The EIPCISetMCP function writes the Value to the Mode Control Port VOID EIPCISetMCP BYTE Value Value Parameters Value Byte value written to the Mode Control Port The EIPCISetSP function writes the Value to the Status Port VOID EIPCISetSP BYTE Value Value Parameters Value Byte value written to the Status Port The EIPCISetESDIP function writes the Value to the Error Status and Digital Input Port VOID EIPCISetESDIP BYTE Value Value Parameters Value Byte value written to the Error Status and Digital Input Port Note Bits DO to D3 of the ESDIP are read only ISC3N PCI 16 Gurley Precision Instruments The EIPCISetDOCP function writes the Value to the Digital Output Control Port VOID EIPCISetDOCP BYTE Value Value Parameters Value Byte value written to the Status Port The EIPCIGetlOP function returns DO D15 bits of the I O Port WORD EIPCIGetlOP Parameters none The EIPCIGetlOCP function returns DO D7 bits of the I O Control Port BYTE EIPCIGetlOCP Parameters none The EIPCIGetCP function returns DO D7 bits of the Control Port BYTE EIPCIGetCP Parameters none The EIPCIGetTSIEP function returns DO D7 bits of the Trigger Select and Interrupt Enable Port BYTE EIPCIGetTSIEP Paramete
11. trol Port resets Trigger Select and Interrupt Enable Port resets Mode Control Port resets Status Port resets Error Status and Digital Input Port resets Digital Output Control Port resets X Y and Z axis position int EIPCIInit Parameters none Result of 0 OK 1 Card not installed 2 Driver not opened NOTE The EIPCIInit function detects the card and initializes the cards parameters It is usually called immediatelly after the EIPCILibOpen call The ISC3N initalization routine The EIPCIInitEx function Detects the installed card resets I O Port and I O Control Port resets Trigger Select and Interrupt Enable Port resets Mode Control Port resets Status Port resets Error Status and Digital Input Port resets Digital Output Control Port int EIPCIInitEx Parameters none Result of 0 OK 1 Card not installed 2 Driver not opened NOTE The same as EIPCIInit except it doesn t reset the X Y and Z counters ISC3N PCI 10 Gurley Precision Instruments The EIPCIReadAxis function returns the Counter Value current position of the selected axis accessed through the Latch as a signed 32 bit value int EIPCIReadAxis BYTE Axis Axis selected BYTE DLMode Data Latch mode y Parameters Axis One of the three channels of the ISC3N Card selected 1 X Axis 2 Y Axis 3 Z Axis DLMode DLMode defines the DL bit of the ISC3N Control Port while reading position 0 DL bit of Control
12. y be individually programmed to output the Count Register C R equality status of the channels X Y and Z respectively Total loading of the 5V pins should be kept below 200mA A short circuit from these pins to any other pin must be avoided Connectors K3 and K4 are reserved for factory test ISC3N PCI 4 Gurley Precision Instruments ISC3N Registers BAR 3 2 1 0 00 XCNT X Counter 04 XREG X Register 08 YCNT Y Counter 0C YREG Y Register 10 ZCNT Z Counter 14 ZREG Z Register 18 IOP 1C IOCP 20 SP MCP TSIEP CP 24 DOCP ESDIP XCNT YCNT ZCNT X Y Z Encoder Counters offsets 00 08 10h ICNT e C eo XREG YREG ZREG X Y Z Compare Registers offsets 04 0C 14h X w mali o IREG IOP I O Port offset 18h 18 31 15 0 _ Oo IOCP I O Control Port offset 1Ch 7 6 5 4 3 2 1 0 po DZ GDD2 GDD1 GDDO ISC3N PCI 5 Gurley Precision Instruments Bit GDDO controls IOB 3 0 GDD1 controls IOB 7 4 GDD2 controls IOB 11 8 GDD3 controls IOB 15 12 CP Control Port offset 20h 7 6 5 4 3 2 1 0 com j N Cl Count Inhibit 0 Counters enabled 1 Counters stopped DL Counter Read Latch Control 0 Counter data is latched 1 Read Latch is transparent and follows counter data TSIEP Trigger Select and Interrupt Enable Port
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