EW50 Industrial LTE Cellular Gateway
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4.2.2 Scheme Setup
There are five data logging schemes to meet different management requirements. They are Sniffer Mode,
Offline Proxy Mode, Full-Time Proxy Mode, and mixed modes for sniffer and proxy combinations. Configure the
required data logging rules with selected scheme in this Scheme Setup page.
Go to
Field Communication > Data Logging > Scheme Setup
tab.
Create/Edit Data Logging Rules
When the
Add
button is applied,
Scheme Configuration
screen will appear.
Scheme Configuration
Item
Value setting
Description
Name
Required setting.
Specify a name as the identifier of the data logging rule.
Value Range
:
1 ~ 16 characters.
Mode
Sniffer
is selected by
default.
Select an expected data logging scheme for the data logging rule.
There are five available schemes:
Sniffer
: The Modbus gateway will record all Modbus transactions between the
Master and Slave devices.
Off-Line Proxy
: When the connection between the Modbus gateway and Master
is lost, the pre-defined proxy rule will be triggered and the Modbus gateway will
issue the specified function code to collect and record the data / status from the
slave devices.
Full-Time Proxy
: The pre-defined proxy rule will be triggered all the time and the
Modbus gateway will issue the specified function code to collect and record the
data / status from the slave devices.
Sniffer & Off-Line Proxy
: This is a mixed mode for both Sniffer and Off-Line Proxy
modes.
