Xiamen Caimore Communication Technology Co.,Ltd
2 F, 37#, Wanghai Road, Software Park 2, Xiamen,China (361009)
Add:2 F, 37#, Wanghai Road, Xiamen Software Park 2, Xiamen,China (361009)
Tel: 86 592 3799895
Fax:+86-592-5975885
Web:
http://www.cai
more.
com
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Device SIM card number: Setting the mobile number of SIM card with the fixed 11 bits.
These parameters do not the mobile number of SIM card, but to provide a method for central
server to recognize the connected device.
Data Frame Interval time: The default is 200ms.
The packet rules of DTU data packages are follows:
1. Once the receiving data from serial port is exceeds the specified length of the buffer
size (2048 bytes), DTU will packet the received data and then send it to the central
server.
2. During the setting time of “data frame interval time”, if no serial data be received by DTU
device, DTU will packet all the received data and send it to the central server.
Too short time of “Data Frame Interval time” may lead to one data package split into
multiple packets; too long time may lead to two or more data packages be packet to one
data package and send for central server in one time. Using our company’s factory
default setting will cause one package be split into multiple ones, or multiple packages
are packet into one. If the appropriate value of time cannot be calculated or
experimental, please feel free to contact us. We will help you to calculate a reasonable
data frame interval time.
Heartbeat time: It is the interval time of periodically sending the monitoring data online to
maintain the link. Unite: second. The default is 60s. It is recommended that the heartbeat
time should not be set too short to increase the traffic; also not too long to monitor if device
fail to connect in a short time. The recommend value range is from 10s to 120s.
Heartbeat definition: after connecting to wireless network, wireless network will
automatically break the connection with DTU, if there is no sending data in a certain time.
The heartbeat package will be sending for the data center in a cycle in order to maintain the
connection of wireless network.
Option: None
function state: not to send the heartbeat package.
Option: Use Default
function state: To use the default heartbeat package: 0xFE.
Option: Self Define
function state: user can definite the heartbeat package
