Sensoray 826 Manual do Utilizador Página 37

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External signal connections to a counter channel
Function
Pin
Name
Signal
Type
Clock Source
Quadrature Single-phase Internal
ClkA
A+
RS-422 ClockA+ Clock+ NC
TTL/CMOS ClockA Clock NC
A-
RS-422 ClockA- Clock- NC
TTL/CMOS NC NC NC
ClkB
B+
RS-422 ClockB+ NC NC
TTL/CMOS ClockB NC NC
B-
RS-422 ClockB- NC NC
TTL/CMOS NC NC NC
NC
NC Internal / None
IX
X+
RS-422 NC NC
TTL/CMOS IX NC
X-
RS-422 IX- NC
TTL/CMOS NC NC
ExtIn Note 1
Auxiliary counter input. The behavior of this signal is configurable.
ExtOut Note 1
Counter output. The behavior of this signal is programmable.
Device
Power
GND POWER
5V power supply return and ground reference for all logic signals.
+5V POWER
+5VDC power. This can be used to power external devices such as incremental
encoders. The total 5V current for all six counter channels is limited to 500mA.
Notes
1. If used, this signal must connect to a DIO channel through the board's DIO signal routing matrix. Refer to the DIO
documentation for details of the routing matrix and electrical characteristics of the DIO channels.
7.2.2 Application Connections
Typical counter connections for common applications
Application Signals
ClkA ClkB IX ExtIn ExtOut
Encoder Interface Phase A clock Phase B clock Snapshot trigger |
Preload trigger | NC
Count enable | NC NC
Event Counter Event clock NC Snapshot trigger |
Preload trigger | NC
Count enable | NC NC
Pulse Generator NC NC Pulse trigger | NC Pulse trigger | NC Pulse output
PWM Generator NC NC Output enable | NC NC PWM output
Pulse Width
Measurement
NC NC Signal to measure NC NC
Period
Measurement
NC NC Signal to measure NC NC
Frequency
Measurement
NC NC External time gate | NC NC NC
7.3 Programming
7.3.1 S826_CounterSnapshotRead
The S826_CounterSnapshotRead function reads a snapshot from a counter channel.
826 Instruction Manual 32 Counters
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