Crown IQ-PSI Reference Manual

* System
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® ®
IQ-PSI Pocket Serial Interface
OVERVIEW
The pocket interface is a product de-
signed as a tool for use by installers
and servicers of IQ Systems. The
PSI is a physically small inter-
face between RS232 to a com-
puter and one Crown Bus se-
rial data loop.
APPLICATIONS
Applications for the product are
primarily for setup of IQ Systems where
an INT II or other interface product is not
meant to be a permanent part of the
system. This tool allows the installer to
bring the pocket interface with him to a
site, program the system with a laptop,
then take his laptop and PSI with him
when he leaves. This is particularly true
for relatively small installations. In larger
systems the PSI is very valuable for
mobility, particularly when checking
parts of a system that may be located
remotely.
HARDWARE
• The PSI is about the size of your hand.
• It has a black finish.
PSI Example Application
® ® Product Reference
Product Reference
C
ENABLE DSPI RS232
P O C K E T S E R I A L I N T E R F A C E
1718 W. Mishawaka Rd.
Elkhart, IN 46517 U.S.A.
10 VDC IN AUX CROWN BUS
DSPI ENABLE
• Power switch (A). It connects or
disconnects power from the bat-
ODEP ENABLE
IOC
POWER
SPI
CH1 CH2
OFF
tery or AC source. Any time the
PSI is off or loses power drop-out
ODEP ENABLE
IOC
POWER
SPI
relays bypass the Crown Bus
CH1 CH2
OFF
connection to the unit.
• Attached RS232 cable (B) with
ODEP ENABLE
female DB9 serial connector. The
IOC
POWER
SPI
CH1 CH2
OFF
PSI automatically senses the pres-
ence of a PC at its RS232 connec-
tor. If there is no PC present the
unit closes its loop to operate as
a component. When an RS232
IQ-PSI (Page 1 of 2)
A
D
PSI Top View
128
64
32
16
8
4
2
1
B
E
PSI End View
PSI Bottom View
H
connection is sensed it opens the loop
to serve as interface.
• Data LED (C). It lights to indicate
reception of data being addressed to
the unit.
• Enable LED (D). It indicates AC or
battery power is available and that the
unit is switched on.
• +10 VDC input (E) for a standard AC
adaptor.
• Aux port (F). It has a three pin remov-
able barrier block connector. Most IQ
components have such a port to pro-
F G