@crown
®
*
System
®
Product Reference
@crown
®
*
System
®
Product Reference
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.
• Power switch (A). It connects or
disconnects power from the bat-
tery or AC source. Any time the
PSI is off or loses power drop-out
relays bypass the Crown Bus
connection to the unit.
• Attached RS232 cable (B) with
female DB9 serial connector. The
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
PSI Example Application
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-
ENABLE
DSPI
ENABLE
CH1 CH2
ODEP
POWER
OFF
IOC
SPI
ENABLE
CH1 CH2
ODEP
POWER
OFF
IOC
SPI
ENABLE
CH1 CH2
ODEP
POWER
OFF
IOC
SPI
CROWN BUS LOOP
RS232
AUX CROWN BUS
10 VDC IN
1718 W. Mishawaka Rd.
Elkhart, IN 46517 U.S.A.
ENABLE
DSPI RS232
POWER
P O C K E T S E R I A L I N T E R F A C E
C
D
E
F
G
A
B
AUX
CROWN BUS
10 VDC IN
1718
W
. M
is
hawaka Rd
.
Elkhart, IN 465
17
U
.S
.A.
ENABLE
DSPI
RS232
POWER
POCKET SERIAL INTERFACE
+
–
+
–
INPUT
OUTPUT
IN
OUT
AUX
CROWN BUS
+10
VDC
EXT
PWR
INPUT
12345
6
7
8
1
2
4
8
16
32
64
128
1234
IQ ADDRESS
BAUD RATE
THE SWITCHES SHOWN BELOW ARE LOCATED
INSIDE THE BATTERY COMPARTMENT.
MODEL:
IQ-PSI
S/N:
VER:
CAUTION: USE ALKALINE BATTERY ONLY!
ON
(DOWN)
H
38,400
19,200
9,600
4,800
PSI Top View
PSI End View
PSI Bottom View
IQ-PSI (Page 1 of 2)
