Nematron OptiLogic Series - Manual (Page 26)

Optimation, Inc. (256)883-3050 26
www.optimate.com
OptiLogic Series
OL2258 High Speed Pulse Counter cont’d
Interfacing the OL2258
The OL2258 High Speed Pulse counter is designed
to interface to a variety of standard pulse encoder devices.
The electrical interface is shown on the right.
Differential, sourcing, or sinking type inputs can be
interfaced to the OL2258. The figures across the bottom of
this page illustrate connections for each type of encoder.
General Overview
The OL2258 is configurable. It can be used with
pulse & direction, up/down count or quadrature type
pulse encoders. These signals may come from shaft
encoders, flow meters or any other signal source that
produces a pulse train output. When operating, the
OL2258 maintains a current cummulative count as a 32
bit integer value. It also makes available frequency
snapshot data as the most recent count over either 1
second or 200 milliseconds. The Z and LS inputs can be
used to automatically reset the count to a user defined
value. Each transistor output can be configured to turn
on when the count value is within its related count range.
1
2
4
5
6
7
8
9
10
3
A
Z
LS
B
1
Outs
2
L O O 2258
P
U
L
S
E
I
N
Term Label Description
1 A1 Pulse input A(quadrature)/
Pulse input (pulse & direction)/
Up pulse (up/down count)
2 A2
3 B1 Pulse input B(quadrature)/
Direction (pulse & direction)/
Down pulse (up/down count)
4 B2
5 Z1 Z input (optional)
6 Z2
7 LS Limit switch input (optional)
8 Com Common for limit switch and
two outputs
9 Out1 Open collector output 1
10 Out2 Open collector output 2
10
9
8
7
6
5
4
3
2
1
A
B
Z
LS
L2
Differential Drive Interface
(Positive differential)
L1
OL2258 Interface
1
2
3
4
5
6
7
8
9
10
A
B
Z
LS
Out1
Out2
10
9
8
7
6
5
4
3
2
1
A
B
Z
LS
L2
Sinking Encoder Interface
L1
10
9
8
7
6
5
4
3
2
1
A
B
Z
LS
L2
Sourcing Encoder Interface
L1
10
9
8
7
6
5
4
3
2
1
A
B
Z
encoder ground
LS
L2
Differential Drive Interface
(Bipolar differential)
L1