Hach Active 4-20 mA Manuel D'utilisation page 8

Operation
Configure a 4-20 mA output module
The Network Setup option appears in the Settings Menu only if an
analog output module or other network module such as Modbus or
Profibus is installed in the controller.
Outputs for analog output modules are set at 4-20 mA. Outputs can be
assigned to represent a measured parameter such as pH, temperature,
flow or calculated values.
1. From the Settings menu, select Network Setup.
2. Select Edit Name and enter a name for the module. Push ENTER to
save the name.
3. Select an output (A, B, C) and push ENTER.
a. Highlight an option and push ENTER.
b. Make a selection from the list or update the entries.
c. Push ENTER to save the changes.
Option Description
Select Source Selects the output to configure—None, sensor 1 name,
sensor 2 name, calculation (if set up). For sensor output,
Select Parameter sets the measurement options. When the
measurement is autorange, Set Range sets the range.
Set Low Value Sets the 4 mA value (default: 0.000). (Range and units
depend on sensor)
Set High Value Sets the 20 mA value (default: 1.000). (Range and units
depend on sensor)
Set Transfer Sets the transfer value. Range 3.0 to 23.0 mA (default
4.000).
Set Filter Sets a time-average filter value of 0 (default) to
120 seconds.
Diagnostics and tests menu
1. From the Settings menu, select Diagnostics and Tests.
8 English
2. Select an option and push ENTER to perform the function or view the
data.
Option Description
Output Cal Calibrates the low (4 mA) and high (20 mA) values for
each of the three 4-20 mA outputs (A, B, C).
Hold output Sets the hold output options to Hold, Transfer or
Release for each of the three 4-20 mA outputs (A, B,
C).
Test output Drives selected output to a known value.
Status Displays the output value.
Error hold mode Selects what to do on error condition.
Module information Displays information about the installed module.
• Software version
• Bootloader version
• Serial Number
Default Setup Sets the configuration to factory defaults.
Modbus registers
A list of Modbus registers is available for network communication. Refer
to www.hach.com or www.hach-lange.com for more information.