Four Axis Encoder Interface Cards |
| EN-EIC-325 (ISA Bus) and EN-EIC-325-PCI (PCI Bus) |
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The Models EN-EIC-325 and
EN-EIC-325-PCI Four Axis Encoder
Interface Cards accommodate most
of the popular optical encoders
available. The board supports either
square-wave or sinusoidal output
encoders, both linear and rotary
types. It can be directly connected
to up to four encoders and will also
provide necessary excitation to the
encoders. The card is equipped with
four differential inputs for limit or
home switches/marker/encoder
index and 10(PCI)/11(ISA)
single-ended inputs for general use.
Also, there are four opto-isolated
outputs that may be used for set-points,
carry/overflow or
index/marker and three opto-isolated
outputs for general use.
The card has four 24-bit up/down
latch counters. Each counter can
be programmed for a preset value.
There is an internal status register
for rapid storing and clearing of
signals.
Specifications
EN-EIC-325
and EN-EIC-325-PCI Cards
Number of Encoders: 4 per board
Multiple Encoder Pulses: 1, 2 or 4
(software selectable)
Encoder Outputs:sinusoidal or
square-wave types
Counter Size: 24-bit up/down
with latched buffer
Method of Communication
with PC Bus:
I/O port addressing,
16 jumper selectable address
ranges (ISA), automatic selection
(PCI)
Encoder Inputs:
4 Wave Signal Inputs
(one per channel)
• Single ended or differential for
square wave
• Differential for sinusoidal wave
4 Wave Index (Marker) Inputs
(one per channel)
• Single ended or differential
11 General purpose inputs (ISA)/
10 General purpose inputs (PCI),
TTL/CMOS compatible Schmidt
trigger single-ended
Encoder Outputs:
4 Event signal outputs
• Can be set to respond to following
events - setpoint, overflow and
index/marker
• 1 Opto-isolated output per
channel
3 General purpose opto-isolated
outputs
Power
(all supplied from ISA
or PCI bus):
+5 V, 200 mA max; +12 V, 100 mA
max; -12 V, 50 mA max
Encoder Connectors: mini D-Sub
44 pin (mating connector supplied)
Output Connectors: D-Sub 9 pin
Operating Ambient:
0 to 50°C (32 to 122°F),
up to 80% RH non-condensing
Dimensions:
EN-EIC-325;
153 L x 107 mm W
(6.0 x 4.2")
EN-EIC-325-PCI;
129 L x 107 mm W
(5.1 x 4.2")
Weight:150 g (5.3 oz)
ENCODER SIGNALS
SQUARE-WAVE SIGNAL
Signals: square wave A phase
and B phase shifted by 90°,
single-ended or differential
Compatibility:
HTL 0.5-5V or TTL compatible
Rate: 500 Kpps max
SINUSOIDAL SIGNALS
Signals: two incremental sinusoidal
signals (phase A and B shifted by
90°) differential
Signal Range (Encoder Output):
Impedance:<1 K: current output
encoders, >± 100 µA; voltage
output encoders,
>± 100 mV for
phases A, B and for the reference
marker/index pulse
Encoder Excitation: 5 Vdc
Light Source Current: 900 mA
total max,
protected by a polyswitch
resettable fuse
Rate: 500 Kpps max:
ENCODER COUNTER
Counter: 24-bit up/down counter
+24bit latched buffer per counter
Setpoint: independently
programmable setpoint for each
counter
Buffers: user may freeze the
buffers without stopping the
counters from counting
Operation: independent
operation mode for each axis
Encoder Pulses:
single/multiple encoder pulses
(1, 2 or 4 - software selectable)
Counter Reset: counter may be
reset when index is reached
(software selectable)
Output (EN-EIC-325, EN-EIC-325-
PCI)/Interrupt
(EN-EIC-325
only) Options for each Encoder
(independently selectable):
set-point reached, counter carry
flag, index/marker
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† Price are shown in RMB.
Note: Each card is supplied with one mating connector for the 44 pin encoder input port. For an extra mating connector for the encoder input port, order part number EN-EIC-325-CONN, $7. Each card also includes example software and source code illustrating how to communicate with the card under DOS as well as Windows drivers (EN-EIC-325 supports WIN95/98, EN-EIC-325-PCI supports WIN95/98/NT/2000/XP) with complete Visual Basic examples.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
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