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2.5.2. Position Synchronized Output (PSO)
The PSO signal is available on the dual-function AUX Marker/PSO signal lines. Use the PSO pulse external
sync functions [A3200: PSOOUTPUT PULSE EXTSYNC command] to configure the auxiliary marker as an
output. Refer to the Help file for more information.
Use the PsoOutputConfigureOutput() function [A3200: PSOOUTPUT CONTROL command] to transmit
the PSO output signal on the Marker ± pins differentially. Or, use the PsoOutputConfigureOutput()
function [A3200: PSOOUTPUT CONTROL command] to configure the Marker - pin as a
5V TTL PSO output.
The differential signal format is recommended when using long cable lengths in noisy environments or
when high frequency pulse transmission is required. It is best to locate the line receiver close to the
receiving electronics. A 5 V TTL signal is used to drive an opto coupler or general purpose TTL input. This
signal is active high and is driven to 5 V when a PSO fire event occurs. When the drive is reset or after
initial power up, the PSO pins (refer to
), are not actively driven and the fail safe state is
defined by pull-up and pull-down resistors as shown in
The -EB1 I/O option board has additional PSO signal formats. Refer to
for more information.
Table 2-38:
PSO Specifications
Specification
Value
Output
TTL
5 V, 16 mA (max)
Maximum PSO Output (Fire) Frequency
TTL
12.5 MHz
RS-422
12.5 MHz
Output Latency
[Fire event to output change]
TTL
15 ns
RS-422
15 ns
Table 2-39:
PSO Pins on the Auxiliary I/O Connector
Pin#
Description
In/Out/Bi
19
Auxiliary Marker- / PSO output / TTL Output
Bidirectional
20
Auxiliary / PSO output
Bidirectional
21
Common
N/A
2.5. Auxiliary I/O Connector
XC4e Hardware Manual
72
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Содержание Automation1 XC4e
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