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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.

EtherWAN EW50 User Manual

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