Measurement-computing WBK17 User Manual

WBK17, Counter/Encoder Module 987996 WBK17, pg. 1WBK17 Counter-Input Module with Quadrature Encoder SupportFor use with WaveBook/516, /51

WBK17, pg. 10 987996WBK17, Counter/Encoder ModuleDebounce times should be set according to the amount of instability expected in the input signal. Se

WBK17, Counter/Encoder Module 987996 WBK17, pg. 11Terms Applicable to Counter ModesThe following terms and definitions are provided as an aid to unde

WBK17, pg. 12 987996WBK17, Counter/Encoder ModuleTiming Mode (see page 19).OPT2: Determines whether the time is to be measured with a 16-bit counter

WBK17, Counter/Encoder Module 987996 WBK17, pg. 13COUNTER: OPT0: This selects totalize or clear on read mode.Totalize Mode – The counter counts up

WBK17, pg. 14 987996WBK17, Counter/Encoder ModulePeriod ModeThis mode allows for period measurement of the channel input. The measurement period is t

WBK17, Counter/Encoder Module 987996 WBK17, pg. 15PERIOD: OPT6: This allows a mapped channel’s period to be measured, instead of the input channel.

WBK17, pg. 16 987996WBK17, Counter/Encoder ModuleEach frequency range given in the previous table-set can be exceded. If the input waveform goes unde

WBK17, Counter/Encoder Module 987996 WBK17, pg. 17Pulsewidth ModeThis mode provides a means to measure a channel’s pulsewidth. The measurement is th

WBK17, pg. 18 987996WBK17, Counter/Encoder ModulePULSEWIDTH: OPT6: This allows the mapped channel’s pulsewidth to be measured instead of theinput ch

WBK17, Counter/Encoder Module 987996 WBK17, pg. 19Timing ModeThis mode provides a means of measuring time between two subsequent events, i.e., the ed

WBK17, pg. 2 987996WBK17, Counter/Encoder ModuleThe WBK17 is an 8-channel multi-function counter/encoder module that can be used with WaveBook/516,/51

WBK17, pg. 20 987996WBK17, Counter/Encoder ModuleTIMING: OPT2: This determines whether the time is to be measured with a 16-bit (Counter Low), or32-

WBK17, Counter/Encoder Module 987996 WBK17, pg. 21As the encoder rotates, the A (or B) signal is indicative of the distance the encoder has traveled.

WBK17, pg. 22 987996WBK17, Counter/Encoder ModuleEncoder Wiring DiagramsYou can use up to four encoders with each WBK17 module in your WaveBook system

WBK17, Counter/Encoder Module 987996 WBK17, pg. 23Wiring for 1 or 2 EncodersThe following figure illustrates differential connections for two encoder

WBK17, pg. 24 987996WBK17, Counter/Encoder ModuleThere are other useful encoder options; for example, analog filtering. If the encoders are known to

WBK17, Counter/Encoder Module 987996 WBK17, pg. 25If more timing resolution is needed, the scan period must be shortened. This has an impact when se

WBK17, pg. 26 987996WBK17, Counter/Encoder ModuleApplication Example #2Using Encoder mode to implement Up/Down Counters of any size.The encoder mode d

WBK17, Counter/Encoder Module 987996 WBK17, pg. 27Wiring for 3 EncodersThe following figure illustrates single-ended connections for three encoders.

WBK17, pg. 28 987996WBK17, Counter/Encoder ModuleWith the encoders connected in this manner there is relative positioning information available on two

WBK17, Counter/Encoder Module 987996 WBK17, pg. 29Four Encoders – Example SetupChannel Connection Programming Setup1 Encoder1 – A Encoder Mode, 1X op

WBK17, Counter/Encoder Module 987996 WBK17, pg. 3Hardware SetupConfigurationAll WBK17 configurations are controlled by software. The WBK17 requires n

WBK17, pg. 30 987996WBK17, Counter/Encoder ModuleDigital OutputsThe WBK17 has 8 fully programmable digital outputs. Each output has an open-drain DMO

WBK17, Counter/Encoder Module 987996 WBK17, pg. 31Pattern Detection and Data MarkersThe WBK17 has a pattern detection feature that can be individuall

WBK17, pg. 32 987996WBK17, Counter/Encoder ModulePattern Detection ModuleNote: OPT bits (see figure) are set by software options.Example: Setpoint D

WBK17, Counter/Encoder Module 987996 WBK17, pg. 33Example Detection: Channel 1 in Totalizing Counter ModeThe detection circuit works on data that is

WBK17, pg. 34 987996WBK17, Counter/Encoder ModuleDetection Example: Channel 4 in Encoder Position Mode, Channel 5 in Period ModeDetect 4 can be route

WBK17, Counter/Encoder Module 987996 WBK17, pg. 35Software SupportWaveView contains special software features for WBK17. These features are discusse

WBK17, pg. 36 987996WBK17, Counter/Encoder ModuleFuse ReplacementThe WBK17 has three user-replaceable fuses as follows:• F1 - Power Output Fuse (for +

WBK17, Counter/Encoder Module 987996 WBK17, pg. 37WBK17 - SpecificationsGeneralPower Consumption: 520 mA @ 15V input, 310 mA @ 25Vinput (assuming no

WBK17, pg. 38 987996WBK17, Counter/Encoder Module

WBK17, pg. 4 987996WBK17, Counter/Encoder ModuleUsing Fastener Panels to Stack ModulesFor convenient mounting, the WBK17 has the same footprint as oth

WBK17, Counter/Encoder Module 987996 WBK17, pg. 5CMOS output driver with high current outputs used with voltages of up to 15 V. Balanced line driver

WBK17, pg. 6 987996WBK17, Counter/Encoder ModuleComparatorEach channel has its own individually programmable comparator as shown in the figure below.

WBK17, Counter/Encoder Module 987996 WBK17, pg. 7Debounce ModuleEach channel’s comparator output can be debounced with 16 programmable debounce times

WBK17, pg. 8 987996WBK17, Counter/Encoder ModuleTrigger After Stable ModeIn the “Trigger After Stable” mode, the output of the debounce module will no

WBK17, Counter/Encoder Module 987996 WBK17, pg. 9Trigger Before Stable ModeIn the “Trigger Before Stable” mode, the output of the debounce module imm