Serial indicator with Modbus

Serial input indicator, Instrotech IQ230
Model IQ230 
is a 6-digit panel-mount serial input remote indicator for RS232 and RS485.

Serial communications is supplied as standard with MODBUS™ RTU and MODBUS™ ASCII protocols.  A simple ASCII-out protocol is also provided for serial printing, datalogging and large display interfacing.

Advanced features include max/min recording; programmable front pushbuttons; 2 programmable digital inputs; security menu lockout; and built-in menu help hints.

The alphanumeric high-bright LED display and programming help prompts makes for quick and easy set-up.  Model IQ230 options include up to 4 relays, analogue retransmission, and real time clock for date and time stamping.
  • High bright 6-digit 14-segment LED displays for easy setup and calibration
  • -199999 to +999999 display counts
  • RS232 and RS485 communications standard
  • MODBUS™ RTU/ASCII and an Infiniteq ASCII out protocol
  • IP65, NEMA 4, UL Type 4, 48 x 96mm ABS/Polycarbonate enclosure
  • Universal AC and DC switch mode power supplies
  • 2 x Programmable digital inputs (pull up or pull down field jumper selectable)
  • 3 x Programmable front panel push buttons
  • Up to 4 front panel LED indicators for alarm set point status (Mechanical or solid-state option required)
  • Maximum/Minimum recording
  • Built in menu help hints
  • Field upgradable firmware via the RS232 interface
  • 1 year warranty
General:Model IQ230
Display6-digit, 13.8mm (0.543”) 14 segment high brightness red LED
Display range-199999 to +999999
Status LED's4 LED's for SP1 to SP4
Digital Inputs2 Programmable digital inputs
Built in hysteresis, filter and input over voltage protection
Maximum input voltage <30VDC
Input logic is field jumper selectable
(Pull up, sinking inputs) - 10kΩ internal resistor to 5V
(Pull down, sourcing inputs) - 10kΩ internal resistor to common
Active/Non-Active input trigger: <1.9V
Non-Active/Active input trigger: >2.3V
Keypad4 keys total, 3 programmable keys
Memory storageNon-volatile EEPROM, 100000 write cycles minimum
Warm up time15 minutes
Power Requirements:
AC Supply85-264VAC, 50/60Hz or 120-370VDC
Isolation: 3000VAC/1min
Low DC Supply10-30VDC input
Reverse and over voltage protected
Isolation: >1000V/1min
High DC Supply25-70VDC input
Reverse and over voltage protected
Isolation: >1000V/1min
Power Consumption<5W, depending on options selected
Fuse (built in)2A Slow Blow (Wickmann_3721200000)
RS components part number_2266599
Operating temperature-10°C to 50°C (14°F to 122°F)
Storage temperature-40°C to 80°C (-40°F to 176°F)
Operating / storage humidity <85% RH non-condensing
Overall Dimensions96 x 48 x 112mm (LxHxD) (3.78 x 1.89 x 4.41”)
(Depth includes connectors)
Mounting92 x 45mm (3.62 x 1.77”) cut-out
Enclosure materialRear ABS, Front polycarbonate
Front facia ratingIP65, with O-ring supplied as standard
Wiring connections Removable terminal blocks
Analogue Out:Optional
Ranges (selectable through menu)
DAC Resolution16 Bit
Update rate10 updates/second
Current output compliance500Ω maximum load
(Current is source, not sink)
Voltage output compliance1kΩ (minimum load)
Current open loop detectionDisplay flashes “mA.Loop” error message
Linearity<0.02% of full scale
Accuracy0.05% of full scale
Isolation (Optional)1000VDC @ 1mA for 1 minute
ASCII In (Infiniteq Protocol)
ASCII Out (Infiniteq Protocol)
RS232 (standard)Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data bits: 7 or 8 bits
Parity: Odd, Even or None
Stop bits: 1 or 2 stop bits
Non isolated
RS485 (standard)Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data bits: 7 or 8 bits
Parity: Odd, Even or None
Stop bits: 1 or 2 stop bits
Internal 120Ω field jumper selectable termination resistor
Max 32 instruments per line
Setpoint Relays:Optional, 1, 2, 3 or 4 can be fitted
Contact rating2A@240VAC or 30VDC (resistive load)
Isolation to input circuitry >1000Vrms for 1 minute
TypeFORM-C (change over contact, NO / NC)
Life expectancy>100K cycles min. at full load rating. External RC snubber extends relay life for operation with inductive loads
Solid-State (SSR):
Contact rating120mA@400VAC/DC
Isolation to input circuitry>1000Vrms for 1 minute
TypeFORM-A (normally open)
Real Time Clock:Optional RTC
AccuracyBetter than 2 seconds per day (temperature dependent)
Order codes and options:

IQ230 for 85-264VAC auxiliary supply
-700   10-30VDC auxiliary supply
-701   25-70VDC auxiliary supply
-710   1 mechanical change-over Form C relay
-711   2 mechanical change-over Form C relays
-712   3 mechanical change-over Form C relays
-713   4 mechanical change-over Form C relays
-720   1 solid-state Form A relay
-721   2 solid-state Form A relays
-722   3 solid-state Form A relays
-723   4 solid-state Form A relays
-730   16 bit analogue output, 0/4-20mA, 0-10V
-731   16 bit isolated analogue output, 0/4-20mA, 0-10V
-750   Real time clock
-760   Engineering units legends
-761   Power connector protective cover
-762   115VAC inductive load suppressor
-763   230VAC inductive load suppressor
-764   2A slow-blow panel meter replacement fuse
-765   R-C snubber noise and arc suppressor
-766   Transparent protective front cover

IQ230 6-digit panel mount serial MODBUS indicator

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IQ230 serial input indicator functions
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E&OE. Pricing and Availability may be subject to change without notice.