Endress+Hauser Liquistation CSF33 - Additional Functions

Liquistation CSF33 Operation
Endress+Hauser 107
10.5.5 Modbus RS485 and Modbus TCP
Specify which process values should be output via Modbus RS485 Communication or via
Modbus TCP.
In the case of Modbus RS485, you can switch between the RTU and the ASCII protocol.
You can define a maximum of 16 device variables.
1. Define the data source.
 You can choose from sensor inputs and controllers.
2. Select the measured value to be output.
3. Define how the device should behave in the hold state. (Configuration options of
Source of data, Measured value and Hold behavior) →  103
Please note that if you select Hold behavior = Freeze , the system not only flags the status
but also actually "freezes" the measured value.
Further information on "Modbus" can be found in the Guideline for Communication via
Modbus, SD01189C
10.6 Additional functions
10.6.1 Limit contactors
There are different ways to configure a limit switch:
• Assigning a switch-on and switch-off point
• Assigning a switch-on and switch-off delay for a relay
• Setting an alarm threshold and also outputting an error message
• Starting a cleaning function
Menu/Setup/Additional functions/Limit switches/Limit switch 1 ... 8
Function Options Info
Source of data Selection
• None
• Sensor inputs
• Binary inputs
• Controller
• Fieldbus signals
• Mathematical functions
• MRS set 1 ... 2
Factory setting
None
‣
Specify the input or output which is to be the
data source for the limit switch.
The sources of data on offer depend on your
device version.
You can choose from connected sensors, binary
inputs, fieldbus signals, mathematical functions,
controllers and sets for measuring range
switching.
Measuring value Selection
Depends on:
Source of data
‣
Select the measured value, see the following
table.
Measured value depending on the Source of data
Source of data Measured value
pH Glass Selection
• Raw value mV
• pH
• Temperature
pH ISFET
ORP Selection
• Temperature
• ORP mV
• ORP %