Measurement-computing WBK Options Instrukcja Użytkownika Strona 105

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WBK17, Counter/Encoder Module
987996
WBK17, pg. 27
Wiring for 3 Encoders
The following figure illustrates single-ended connections for three encoders. For differential connections
we would simply make /A, /B, and /Z signal connections to the respective channel slots. With three
encoders it should be noted that there is no separate channel for a third set of Z, /Z signals; thus, in the
following figure Encoder 3 has no Z signal.
The WBK17 can receive input from up to four encoders; however, the WaveView data
acquisition program can accept input from only one or two encoders. To receive input
from three or four encoders [with one WBK17] refer to the Programmer’s Manual
(p/n 1008-0901).
Three Encoders with Single-Ended Connections to WBK17
Connect three encoders to the WBK17 as shown in the table below. Each signal (A, B) can be connected
as a single-ended connection with respect to the common ground or as a true differential input. All three
encoders can draw their power from the power output connector. Connect the encoder’s power input to the
+5V or +15V power, connect the return to COM on the same connector. Make sure that the current output
spec is not violated or a fuse may blow. The programming setup given below is just a representative of
possible options.
Three Encoders – Example Setup
Channel Connection Programming Setup
1 Encoder1 – A Encoder Mode, 1X option, 16-bit counter, Latch on SOS
2 Encoder1 – B Period Mode, 1Xperiod option, 16-bit counter, Map channel doesn’t gate,
Ticksize to 20000ns
3 Encoder2 – A Encoder Mode, 2X option, 16-bit counter, Latch on SOS
4 Encoder2 – B Period Mode, 1Xperiod option, 16-bit counter, Map channel doesn’t gate,
Ticksize to 2000ns
5 Encoder3 – A Encoder Mode, 4X option, 16-bit counter, Latch on SOS
6 Encoder3 – B Period Mode, 1Xperiod option, 16-bit counter, Map channel doesn’t gate,
Ticksize to 200ns
7 Encoder1 – Z Counter in Totalize mode, stop-at-the-top, 16-bit counter
8 Encoder2 – Z Counter in Totalize mode, stop-at-the-top, 16-bit counter
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