15
SERIAL PORT COMMUNICATION
(HI93551R & HI93552R only)
HI93551R
and
HI93552R
feature an RS232 output for transferring
measurement data (once every second for
HI93551R
and once every
2 seconds for
HI93552R
) to devices provided with RS232 input (PC
or printer).
The communication protocol has been designed to transmit to the
receiving unit all the displayed information.
The communication is unidirectional (meter to receiving unit only)
and the transmissions consist in a 32-character ASCII string, compatible
with our optional
HI92000
software.
To allow our users access to the latest version of Hanna Instruments PC
compatible software, we made the products available for download at
http://software.hannainst.com
. Select the product code and click
Download Now
. After download is complete, use the
setup.exe
file to
install the software.
The 32-character data string is structured as follows:
Main portion of the LCD
• byte 0
probe type: K-thermocouple (k)
• bytes 1, 2
measurement channel: T1, T2, T1-T2 (Td)
• byte 3
measurement mode: Normal (blank), Relative (R),
Average (A), Average done (a)
• byte 4
operating mode: Hold (H), Memory recall (M)
• byte 5
blank character
• bytes 6-10
measurement: reading (XXX.X or blank XXXX),
over-range (OVRG blank), no data (blank ----)
• byte 11
temperature unit: C, F
• byte 12
blank character
Secondary LCD, left portion
• bytes 13, 14
info description: low temperature (Lo), T1 (T1)
• byte 15
blank character
• bytes 16-20
measurement: reading (XXX.X or blank XXXX),
over-range (5 blanks), no data (blank ----)
• byte 21
blank character
Secondary LCD, right portion
• bytes 22, 23
info description: high temperature (Hi), T2 (T2)
• byte 24
blank character
• bytes 25-29
measurement: reading (XXX.X or blank XXXX),
over-range (5 blanks), no data (blank ----)
• byte 30
<CR>
• byte 31
line feed
