InHand InDTU324, User Manual

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Figure 1-2-1 hardware structure
1.2.2 Software Functions
DTU332/324 implements wireless data communication between the serial port device in the remote
station and the central control system. The main functions are as follows:
Table 1-2-1 Basic functions
Function Description
Network Wireless cellular network
Serial port Special configure tool is DTU Tool, can configure DTU by any of serial port
Status Displays running status using LED.
Mounting mode Desktop installation or wall-mounting
Wireless DDN
Supports the wireless DDN service of China Mobile and the VPDN service
of China Telecom and China Unicom.
Data transparent
transmission
Transmits application data transparently in two directions.
Protocol conversion Custom UDP for DC and Modbus bridge
Long connection DTU will actively dial up and establish a PPP link.
Short connection
DTU does not actively dial up and establish a PPP link. According to
different configurations, there will be different activation policies, and dialing
and networking will start after activation.
Local data active
In short connection mode, the network can be activated via local data
transmission when the device is in hibernation
Phone active
In short connection mode, when the device is in hibernation, the network
can be activated by phone call.
Auto active
Start timing when entering sleep mode, reach the scheduled time, then
re-dial up
Auto offline
Start timing from the successful dialing, and when the scheduled time is
reached, restart the communication module and enter the sleep mode.
Log
Enables the log function to output logs through the serial port, helping