Hach 1735 TRO Manuel D'utilisation page 14

Configure the general setup
Set the date and time
1. Go to GENERAL SETUP>SET DATE/TIME.
2. Configure the items shown.
Option
DATE FORMAT
DATE/TIME
Configure the current loop
1. Go to GENERAL SETUP>CURRENT LOOP>CONFIGURE.
2. Configure the items shown.
Option
ACTIVATION
SELECT SOURCE
SET PARAMETER
SET FUNCTION
SET TRANSFER
SET FILTER
SCALE 0mA/4mA
ERROR HOLD MODE
Configure the "Calibrate and Test" outputs
Note: The manufacturer recommends the use of default values.
1. Go to GENERAL SETUP>CURRENT LOOP>CALIBRATE AND TEST.
2. Configure the items shown.
Option
OUTPUT CAL
HOLD OUTPUTS
TEST OUTPUT
Configure the Modbus setup
For hazardous locations, the manufacturer recommends the use of remote commands through the
ballast water control system.
1. Go to GENERAL SETUP>MODBUS SETUP.
2. Configure the items shown.
Option
MODBUS ADDRESS
BAUD RATE
MODBUS MODE
14 English
Description
Select 12 or 24 hour. Show the day, month or year first.
Set the current date and time.
Description
Set low and high values
Select current instrument (default) or none
Select the parameter (bromine or chlorine) or the next measurement time
Select Linear (default) or PID control, logarithmic or bilinear
Set the mA value (4 is default)
Set the value in seconds
Select 0-20 mA or 4-20 mA (default)
Select hold (default) or transfer outputs when an error condition is active.
Description
Select 4 mA (default) or 20 mA
Set the activation, output mode and channels
Set the test output (4 mA is default)
Description
Set the unique Modbus address for the instrument.
Select the baud rate. The default value is 19,200 baud.
Select RTU (default) or ASCII. For ASCII mode, set the data bits to 7 bits.