Turb PLUS 2000
Setup
, Configuration and Calibration
28
100193 Rev 0 ba77254e01 11/2020
6.2.3
Modbus Address – Address Selection
The Modbus address of the Tub PLUS 2000 can be set from 1 to 255.
To change the Modbus Address:
1. Enter the
CONFIG
mode by pressing the
and
buttons until the arrow beside
CONFIG
is
illuminated, then press the
button.
2. Press the
button to move to the next menu until
ADDR
is displayed.
3. Select the address using
or
buttons.
4. Press the
button to accept the setting and move to the next menu or the
button to exit and return
to
AUTO
.
6.2.4
Configuring the Alarms
Two relays are provided that are designed to operate as two independent programmable alarms.
Three types of information must be input to fully program each alarm:
•
The alarm function (
HI
,
LO
,
OFF
or
Error
)
•
The alarm set point (the level at which the alarm activates)
•
The delay time for the alarm: The time that the setpoint must be exceeded prior to an alarm
activation and the time before resetting the alarm (prevents chatter in the relay).
Alarm Function:
The alarms can either be turned
OFF
or programmed to operate in one of three
different manners:
•
HI
alarm: the relay changes state when the measured turbidity level is higher than the programmed
alarm level for a prescribed time.
•
LO
alarm: the relay changes state when the measured turbidity level is lower than the programmed
alarm level for a prescribed time.
•
Error
: the relay changes state when a system error occurs. If a system error occurs a message will
appear on the lower row of the screen describing the problem.
Alarm Set Point:
The level at which an alarm activates is called the alarm set point. On the
instrument, the alarm set point is designated as “
S/P
”. The setpoint is adjustable to any valid
turbidity level over the range of the instrument in steps of 0.01 NTU.
