The People in Control of Motion™ Model 5312B 1-4 Axes PC Quadrature Encoder Input he Model 5312B offers an affordable solution for applications T needing positional feedback, digital readout and event counting for high input signal occurrences. Inputs on the 5312B may be single-ended or differential and are conditioned by a four-phase digital filter. Power (+5V) and grounding connections are provided for encoder use. Five jumper-selectable filter clock frequencies, ranging up to 10 MHz, are also available. Noise 1.2 MHz Maximum Quadrature Input Rate immunity may be maximized by selecting the lowest frequency that’s compatible with the highest input rate expected. 4.8 MHz Input with Bypassed Sample Filter The board applies the signal inputs to a 24-bit decoder/counter with programmable modes. The counter may be used either for quadrature Digitally Filtered Inputs with Selectable Sampling Rates decoding or as a counter for pulse and direction or count up/down inputs. Counters may be cascaded in 24-bit groups. The counters are independent, but may be initialized simultaneously by issuing commands 24-Bit Presettable Counters which can be Cascaded to Provide to a single port. When an index pulse occurs, the count may be latched Greater Range or a new count value may be loaded. The Model 5312B was created with Tech 80’s commitment to open- Pulse & Direction and Count Up/Down capability architecture system design. With its industry-standard language support, programming is far easier than proprietary languages, and throughput isn’t slowed by lengthy ASCII transfers. Visual BASIC and Windows drivers Interrupts on Index Pulse, Over/Underflow or Count Match are available to work with Windows 3.1 & 95, Visual C++ and Visual BASIC 4.0. Motion-specific function calls enhance standard languages, X1, X2, X4 Quadrature Decoding which enable ease of programming. Software Libraries for C, C++, BASIC, Pascal, Visual Basic, Windows™ DLLs and LabVIEW Drivers Available Affordable & Precise Encoder Interfacing APPLICATIONS he Model 5312B can be applied in many ways beyond simple encoder respond to the timer interval interrupts. This frees the host CPU for other T feedback. Timer/Velocity and PWM applications are just a few of the activities in between interrupt calls. complex applications that the 5312B was designed for. PWM Operation Timer/Velocity Applications This operation requires the use of the three-axis 5312B. Each axis is The 5312B’s LS7166 counter chip will count quadrature inputs up to setup to count in the Divide by N, Countdown and Recycle mode. The 208 ns. or 4.8 MHz edge to edge. However, the limitation of the counting counters are set up to count the 10 MHz sample frequency. is actually 1.33 MHz quadrature (Up/Down counting) or 10 MHz pulse and direction. LCTR It has the ability to get position information at precise time intervals. BW When the resolution of R counts per dimension, the first three axes will be used to count absolute dimension information. The fourth axis will 1N914 1N914 Pulse be used as an interval timer. In this mode, the fourth axis will institute LCTR Output CY the capture of axis #’s 0, 1 and data counts. It will also generate an BW interrupt to the host computer. When the interrupt occurs, the host CPU will need to collect the dimension data for RAM storage or other LCTR math function requirements (such as velocity calculations). BW The timer accuracy can be set in 0.1 μsec. increments. Since the count By interlocking the counters the Model 5312B can output PWM signals. dimension captures are hardware-triggered, the software only has to Application Example: Automated Print Inspection Opportunity: A press manufacturer needed an automated inspection system for a new line of four-color printing presses that saved labor costs and reduced waste. Indexed colors needed to be inspected at various points of the page to regulate ink flow. The system needed to check each piece at speeds up to 20 units per second. Faceted As shown on the right, the customer used an electronic eye with a Mirror spinning faceted mirror to monitor index colors. A servo motor was used to spin the mirror at the precise veolcity while two encoders record the mirror and conveyor belt positions. Simultaneously, the customer’s servo controller could not process the information generated by the encoders at the speeds required and also trigger the electronic eye at the appropriate moment. Servo Analysis: Electronic The inspection system requires two axes to collect position Eye information from the encoders and a third axis to act as a timer. By coordinating the first two axes with the third, the electronic eye can be coordinated by both position and time to ensure accurate and efficient data collection. Solution: We recommended a three-axes configuration of the Model 5312B Encoder Input. With its 1.2 MHz maximum quadrature input rate, the 5312B could easily accommodate the data acquisition demands. It can latch the first two axes to the third and fire the electronic eye’s A/D controller at the appropriate moments. By latching the encoder inputs from the conveyor belt and mirror to a timer, the Model 5312B accurately fires the electronic eye’s A/D controller in high-speed, high- precision application. BOARD LAYOUT 24-Bit 24-Bit Digital Differential Digital Differential Multi-Mode Multi-Mode Filter Input Filter Input Counter Counter 24-Bit 24-Bit Digital Differential Digital Differential Multi-Mode Multi-Mode Filter Input Filter Input Counter Counter Data Control Address Bus Bus Interrupt Sample Decode Buffer Buffer Controller Clock J1-J4 Connector PIN Assignments I/O Map Axis Address When Written When Read Pin # Single-Ended Differential 1 00 Write to present register Read output latch (OL) 1 Ground /Phase A* (PR) & increment register & incremental register 2 +5V +5V address counter (IRAC) address counter (IRAC) 3 Ground /Phase B* 01 Write to command Read output status +5V +5V 4 register register (OSR) Ground /Index* 5 2 02 Write to PR & IRAC Read OL & IRAC 6 Phase A Phase A 03 Write to command Read OSR 7 Phase B Phase B register 8 Ground Ground 3 04 Write to PR & IRAC Read OL & IRAC Index Index 9 05 Write to command Read OSR * Denotes an active LOW signal. register 4 06 Write to PR & IRAC Read OL & IRAC 07 Write to command Read OSR register Sample Clock Frequency Jumper Settings Global 08 Global write to all four Invalid Sample Clock Frequency (MHz.) W23 PR’s 09 Global write to all four Invalid 0.625 (9 - 10)* command registers 1.250 (7 - 8) PIC 0A Low port Low port 2.500 (5 - 6) 0B High port Hight port 5.000 (3 - 4) 10.000 (1 - 2) * Default jumper settings LED Placement & Indentification Backplate Axis 1 Axis 2 Axis 3 Axis 4 Inactive Index Phase B Phase A Encoder Connections SPECIFICATIONS Host Interface: Peripheral Tool for the Model 5312B: • PC/XT/AT Compatible • I/O Mapped Switch-Selectable Address Tech 80’s Motion Simulator (Model 9011) • 8-Bit Data transfers • Programmable Interrupts • High-Speed Binary Communications Card Dimensions: 13.3 x 4.2 x 0.5 inches 33.8 x 10.7 x 1.3 cm Recommended Operating Environment: • 0 - 70 ° C • 20 - 95% Relative Humidity, Noncondensing Mating Connectors: • 9-Pin D-Sub The Model 9011 Motion Simulator is a powerful tool to help you to • Ansley 609-9P develop, debug and troubleshoot your motion control systems and • Amphenol 841-14-DEFR-BO9P the Model 5312B. Using a circular LED array, it simulates amplifiers, encoders and motors. Interrupts (Per Axis): The Motion Simulator allows you to test software off line, preventing • Controller Ready expensive hardware mishaps due to undetected software bugs. You • Time/Position Breakpoints can troubleshoot your software even before the motors, slides and • Trajectory Complete other hardware arrives. • Excess Following Error • Index/Home Capture After only one use, Tech 80's Motion Simulator will become an integral tool for your motion control systems. Power Requirements: • +5.0 VDC: ± 5% 1.1 Amp (with 4 quadrature encoders attached) • +12 VDC: ± 10 mA • -12 VDC: ± 10 mA Ordering Information Warranty 5312B-1 Quadrature Encoder Interface, 1 Axis This product is warranted according to the Terms and Conditions of 5312B-2 2 Axes Configuration Sale and is effective for TWO YEARS AFTER SHIPMENT from 5312B-3 3 Axes Configuration Technology 80 Inc. For further warranty information, please consult 5312B-4 4 Axes Configuration the hardware manual. 5312 LAB LabVIEW VI’s 5312 DEV Development Kit The People in Control of Motion is a trademark of Technology 80 Inc. 5312 MAN Hardware & Software Manuals* Windows is a trademark of the Microsoft Corporation. 5312 SOFT Demo & Driver Software* Not responsible for unintentional errors or omissions. * Included in the Development Kit along with Motor Sizing Software, Designing with Motion Handbook, and discount on 9011 Copyright © 1996 Technology 80 Inc. All rights reserved. Motion Simulator Voice: Voice: Voice: 612/542-9545 Fax: Fax: Voice: Voice: Fax: Fax: Fax: 612/542-9785 Technology 80 Inc. Technology 80 Inc. Technology 80 Inc. Technology 80 Inc. Technology 80 Inc. Toll-Free: Toll-Free: BBS: BBS: Toll-Free: Toll-Free: Toll-Free: 800/545-2980 BBS: BBS: BBS: 612/593-8607 (8N1) 658 Mendelssohn Avenue North Email: Email: Email: Email: Email: 73304.3301@compuserve.com Minneapolis, Minnesota 55427 Internet: Internet: Internet: Internet: Internet: http://www.industry.net/tech80