User Manual
Yifan Industry Co., Ltd.
Page 23 of 41
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Website: www.yifanwireless.com
xxx: bytes interval time value
（
millisecond
）
◆
Custom Register String
This item is only valid when the WorkMode is TCST. It
’
s the self defined register string. It can
be empty, the maximum length is 70 bytes.
AT Command:
AT+CONNRGST=xxx
xxx
：
self defined register string
◆
Custom Heartbeat String
This item is only valid when the WorkMode is TCST. It
’
s the self defined heartbeat string, It can
be empty, the maximum length is 70 bytes.
AT Command:
AT+LINKRGST=xxx
xxx
：
self defined heartbeat string
Connect Retry Times, Reconnect Time Interval
In normal applications, IP MODEM 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 IP MODEM 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
