Oldham iTrans User Manual

ModBus Interface iTrans Fixed Point Single/Dual Gas Monitor
6-6 iTrans User Manual (P/N: 77023554-1)
Addr
Inst
R/W
Host
R/W
Range
Description
minutes from $00 to $3C (00 to 60). Note that
the seconds default to zero ($00) each time the
hours and minutes are set.
Examples:
13:05 = $0D05
24:00 = $1800
40124
R
R/W
$0000 to $FFFF
Low Alarm Display Setting
Holds the value of the gas reading at which the
low alarm display will activate.
40125
R
R/W
$0000 to $FFFF
High Alarm Display Setting
Holds the value of the gas reading at which the
high alarm display will activate.
40126
R
R/W
$0000 to $03E8
Cal Gas Value
Holds the value of the calibration gas to be used
on the instrument. The range is from $0000 to
$03E8 (0 to 1000
10
).
40127
R/W
R
$0000 to $FFFF
Loop High Scaling
Holds a value which indicates the gas reading
represented by a 20 mA loop output signal. The
range is from $0000 to $FFFF.
440102
R
R
$0000 to $FFFF
WX Scaled Reading
Use with WX series controller.
NOTE: To get the ModBus reading, register 40103 must be read as well as
register 40102. Register 40103 specifies where the decimal should be placed.
6.4. ModBus Resources
ModBus is a public protocol that can be freely adopted by any developer or
manufacturer desiring to implement it. While a detailed discussion of ModBus
protocol is beyond the scope of this manual, there are a number of up-to-date
resources available on the internet for those wishing to investigate ModBus further.
The most complete resource is www.modbus.org.

Oldham iTrans Specifications

General

Brand	Oldham
Model	iTrans
Category	Measuring Instruments
Language	English