Aerotech XL4s, Руководство по оборудованию

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2.3. Position Synchronized Output Connector
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:
l
Uses cables with long lengths in work areas where a lot of electrical noise occurs.
l
Uses high-frequency pulse transmission.
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 In/Out/Bi Connector
1 O1+ PSO Output Output
2 O1- PSO Output Output
3 O2+ Reserved N/A
4 O2- Reserved N/A
5 O3+ Reserved N/A
6 O3- Reserved N/A
7 GND Ground N/A
Table 2-8: PSO Connector B Pinout
Pin # Label Description In/Out/Bi Connector
1 O1 PSO Output (5V TTL) Output
2 GND Ground N/A
3 O2 Reserved N/A
4 GND Ground N/A
5 O3 Reserved N/A
6 GND Ground N/A
7 +5V 5 Volt Power Supply (500 mA) Output
Table 2-9: Mating Connector Part Numbers for the PSO Connectors
Type Aerotech P/N Third Party P/N
Wire Size: mm
2
[AWG]
7-Pin Terminal Block ECK02403 Phoenix 1908114 0.5 - 0.080 [20-28]
Table 2-10: PSO Specifications
Specification Value
Maximum PSO Output (Fire) Frequency
TTL 12.5 MHz
Isolated 5 MHz
Output Latency
[Fire event to output change] TTL 50 ns
Isolated 150 ns
1. Signals in excess of this rate will cause a loss of PSO accuracy
2.3. Position Synchronized Output Connector XL4s Hardware Manual
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