厦 门 四 信 通 信 科 技 有 限 公 司
Xiamen Four-Faith Communication Technology Co., Ltd.
Add：J1-J2,3rd Floor,No.44,GuanRi Road,SoftWare Park,XiaMen,China
15
Zip Code
：
361008
Tel：+86 592-6300320, +86 592-6300321, +86 592-6300322 Fax：+86 592-5912735 http://
www.four-faith.com www.fourfaith.com
AT Command:
AT+LINKRGST=xxx
xxx
：
self defined heartbeat string
◆
Connect Retry Times, Reconnect Time Interval
In normal applications, DTU will always try to connect with the center even if the
center has problems or closed. To reduce these unnecessary wireless data flow, you can
configure the “Connect Retry Times” and “Reconnect Time Interval” items. When
DTU fail to connect to the center with the configured Retry Time, It will sleep
“Reconnect Time Interval” time, then start next retry.
“Connect Retry Times” AT Command:
AT+RETRY=xxx
xxx
：
times try to connect to the center
“Reconnect Time Interval” AT Command:
AT+RDLWT=xxx
xxx: the sleep time until next retry.
◆
Transfer meanning
0 --- Yes, enable transfer meaning
1 --- No, disable transfer meaning
This item is only valid when the WorkMode is PROT. If this item is set to 0, DTU
will transfer meaning to 0xfd and 0xfe. To know detail transfer meaning method,
please refer <<DTU Transfer Meaning Explanation In the PROT work mode>>. If this
item is set to 1, all the transmission is transparent.
AT Command:
AT+STRAIGHT=x
x
：
0 or 1
3.2.3.2 Other Settings
◆
Network
