Operation
Instrument Controls Menu
Thermo Fisher Scientific
Model 48
i
Instruction Manual
3-39
MODBUS protocol
– The MODBUS protocol is a serial communications
protocol that allows for communication between devices connected to the
same network.
The MODBUS protocol support for the Model 48
i
enables the user to
read the various concentrations and other analog values or variables, read
the status of the digital outputs of the instrument, and to trigger or
simulate the activation of a digital input to the instrument. Refer to
Appendix C for detailed MODBUS protocol information.
●
In the Main Menu, choose Instrument Controls > Communication
Settings >
Communication Protocol
.
COMMUNICATION PROTOCOL:
CURRENTLY: CLINK
SET TO: STREAMING ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Streaming Data Configuration menu is used to allow for configuration
of the 8 streaming data output items, streaming interval, current data
format, and current timestamp setting. The Choose Item Signal submenu
displays a list of the analog output signal group choices to choose from.
Choices are Concentrations, Corrected Concentrations (if the O
2
compensation option is enabled), Other Measurements, and Analog Inputs
(if the I/O expansion board option is installed).
Note
The selected item list is different depending on the
AUTO/MANUAL MODE and RANGE MODE settings. Changing
either of these settings will produce a different set of streaming data items.
If either of these modes is going to be changed on a regular basis, then the
user must configure each set of data separately after changing the modes to
each setting.
▲
●
In the Main Menu, choose Instrument Controls > Communication
Settings >
Streaming Data Config
.
Streaming Data
Configuration
