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XL4s Hardware Manual
2.3. Position Synchronized Output Connector
You can program the Position Synchronized Output (PSO) to generate an output that is synchronized to the
feedback position of an axis. PSO is typically used to fire a laser or trigger an external hardware device.
A PSO firing event can be triggered from a feedback channel or from a software trigger. You can get
quadrature signals from feedback channels and PSO firing event signals after a PSO firing event occurs.
When the PSO generates pulses, minimum latency occurs between the trigger condition and the output.
Aerotech recommends that you use an RS-422 line receiver or an opto-isolator if your system:
Uses cables with long lengths in work areas where a lot of electrical noise occurs.
l
Uses high-frequency pulse transmission.
l
For best performance, put the RS-422 line receiver or the opto-isolator near the electronics that receive the
PSO output pulse.
Table 2-7:
PSO Connector A Pinout
Pin #
Label Description
1
O1+
PSO Output
2
O1-
PSO Output
3
O2+
Reserved
4
O2-
Reserved
5
O3+
Reserved
6
O3-
Reserved
7
GND
Ground
Table 2-8:
PSO Connector B Pinout
Pin #
Label Description
1
O1
PSO Output (5V TTL)
2
GND
Ground
3
O2
Reserved
4
GND
Ground
5
O3
Reserved
6
GND
Ground
7
+5V
5 Volt Power Supply (500 mA)
Table 2-9:
Mating Connector Part Numbers for the PSO Connectors
Type
7-Pin Terminal Block
Table 2-10:
PSO Specifications
Specification
Maximum PSO Output (Fire) Frequency
Output Latency
[Fire event to output change]
1. Signals in excess of this rate will cause a loss of PSO accuracy
www.aerotech.com
Chapter 2: Installation and Configuration
Aerotech P/N
Third Party P/N
ECK01631
Phoenix 1881370
TTL
Isolated
TTL
Isolated
In/Out/Bi
Connector
Output
Output
--
--
--
--
--
In/Out/Bi
Connector
Output
--
--
--
--
--
Output
2
Wire Size: mm
[AWG]
0.5 - 0.080 [20-28]
Value
12.5 MHz
5 MHz
50 ns
150 ns
29
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