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-IO Expansion Board
3.8. SSINET (J302/J303)
Each of the two SSINet interfaces is a two-channel bidirectional RS-422 interface, most typically for
quadrature encoders. This allows one channel for the sine signal and one channel for the cosine signal.
Alternatively, one of the SSINet interfaces may be used to provide an encoder marker signal to another
SSINet interface if used. Each of these two SSINet interfaces are both available on the J302 and J303
connectors, as illustrated in the following table.
The SSINet is designed for daisy-chaining encoder signals from one Ensemble HPe 150/200 to another for
two/three-axis PSO (laser firing). This allows one Ensemble HPe 150/200 containing the -DUALPSO or -
TRIPLEPSO options to track the vectorial position change of two/three axes in real-time. These encoder
signals may also be used for user-defined purposes. Refer to
channels are bi-directional and configured via the SSINet1Setup
the Ensemble Help File for more information. The signals from these ports will be the same as the differential
line driver encoder signal input to the Ensemble HPe 150/200, unless the -MXH option is present.
N O T E : The SSINet #1 and #2 interfaces are both physically hardwired to the J302 and J303 connectors.
If SSINet #1 is configured as an input, a signal driven into the SSINet #1 connections on J302 will also be
present on the SSINet #1 connections of J303, effectively making SSINet #1 on J303 an (un-buffered) out-
put of this same signal. Likewise, this would also be true for the SSINet #2 interface.
Table 3-28:
J302, J303 2-Channel SSINet Connector Pin Assignment
Pin#
Description
1
SSINet #1 Sin-N
2
SSINet #1 Sin
3
SSINet #2 Cosine-N / Marker-N
4
SSINet #2 Sin-N
5
SSINet #2 Sin
6
SSINet #2 Cosine / Marker
7
SSINet #1 Cosine-N / Marker-N
8
SSINet #1 Cosine / Marker
1
SSINet1Setup has replaced PsoSsi1Config in software version 3.00.000..
2
SSINet2Setup has replaced PsoSsi2Config in software version 3.00.000.
www.aerotech.com
Figure 3-18
1
and SSINet2Setup
Chapter 3
Ensemble HPe 150/200
and
Figure
3-6. These four
2
parameters; refer to
In/Out/Bi
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Bidirectional
87
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