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* System
@crown
®
vide a control voltage for external use as
well as an entry point for a control volt-
age into the system.
• Crown Bus loop connector (G). It uses
a four pin removable barrier block.
SETUP
To access the battery compartment and
setup switches slide the battery cover
off the back panel. Before inserting a
battery configure the baud and ad-
dress switches as necessary. Note that
no two PSI units on the same loop may
have the same loop address, valid ad-
dresses range from 1 to 250. Baud may
be set for 38,400, 19,200, 9,600, or
4,800.
SWITCHES
1
2
3
BAUD
ON
OFF
OFF
38,400
OFF
ON
OFF
19,200
9,600
OFF
OFF
ON
OFF
OFF
OFF
4,800
Baud Rate Selection
BAUD RATE
GENERATOR
BAUD RATE
BAUD RATE
RS-232
GENERATOR
GENERATOR
IQ ADDRESS
SWITCH
®
Product Reference
IQ-PSI Pocket Serial Interface (Page 2 of 2)
IQ
2
SUPPORT
The IQ-PSI is an IQ
an interface, it supports both IQ
legacy protocol.
SPECIFICATIONS
Internal Controls — One 8-segment DIP
switch to set the address, one 4-seg-
ment DIP switch to set RS232 baud
rate.
External Controls — Power on-off.
Connectors — One 4-pin "Euro-style"
removable barrier block Crown Bus
connector, one 3-pin "Euro-style" re-
movable barrier block aux port connec-
tor, one female 9-pin RS232 connector
on attached cable, one male coaxial
+10VDC external power input jack.
Indicators — Green Enable LED shows
unit is powered and switched on and a
4
yellow Data LED that indicates data
OFF
transmitted to/from the unit or may be
OFF
forced on via software.
OFF
ON
OPTOCOUPLER
MICROPROCESSOR
PSI Basic Block Diagram
Power — Standard 9 VDC battery or
external 10 VDC supply.
2
component and, as
Finish — Molded black high-impact sty-
2
and
rene.
Crown Bus Isolation — Data is optically
coupled to 20 mA current loop.
Data Rate — 38.4K baud on Crown Bus
loops; 4.8 to 38.4K baud to computer.
Data Format — Serial, binary, asynchro-
nous, 1 start bit, 1 stop bit, 8 data bits,
no parity.
Crown Bus Interface Type — Isolated 20
mA current loop.
PC Interface Type — RS232.
Operation — Half duplex.
Crown Bus Transmission Distance — 300
to 3000 feet (90 to 900 m), depending
on wire type, size, and capacitance.
Typically 1000 feet (300 m) with shielded
twisted pair 26AWG or larger; extend-
able via IQ Repeater.
Transmission Distance RS232 — 50 feet
(15 m).
RELAYS
CROWN BUS
PO Box 1000 Elkhart, IN 46515-1000
BUFFER
AUX
Trademark Notice:
Trademark Notice:
Trademark Notice:
Trademark Notice:
Trademark Notice:
IQ System
BUFFER
AUX
Crown International Inc.
Guaranteed Excellence
@crown
Crown International, Inc.
Ph. 800-342-6939/219-294-8200
Fax 219-294-8301
Internet: www.crownintl.com
®
is a registered trademark of
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