User manual

Confidential, the whole present document is the sole property of Maestro Wireless Solution Ltd.
69
To prevent transient noise signal, a threshold value can be set (operation “TH”). This is the time period required for the
detected state to trigger Command String execution. Unit is in 1 millisecond. Valid value from 1 to 50 (0.1 sec to 5 sec) .
E.g. TH 10  Threshold value is 1 sec.
E.g. When set as low-to-high triggering and threshold 1 second:
IP 1 DR 0 IP 1 TH 10 IP 1 TR 5
When T=1second the Command String #5 will be executed
E.g. when set as high-to-low triggering and threshold 1 sec IP 1 DR 1 IP 1 TH 10 IP 1 TR 5
When T=1second the Command String #5 will be executed
Note:

Due to product limitation the modem cannot detect switching action with period less than 100ms. If the input signal
change is less than 100ms this feature will not be able to detect accurately.
20.4.3 Reading Input Port status
See Chapter 21 for details.
20.5 SMS Service
This service is used to send out a SMS to phone number recorded in the first 10 phonebook records in SIM card.
20.5.1 SMS Service Command String Syntax and explanation
1
st
field
Service
type
2
nd
field
Service id
3
rd
field
Operation
type
4
th
field
Operation
argument
Explanation
SM
(1 to 10)
SN
(SMS content)
Send out the SMS to phone
number inside SIM card
%CTn
%IP
%TMn
%AI
“%” to indicate “variable” options in
SMS content
Input port voltage
Time = T
Start counting time when a low
to high signal (closed to open)
change is detected
When period of high signal
reach the Threshold value,
the command string will be
executed
Input port voltage
Time = T
Start counting time when a
high to low signal (open to
close) change is detected
When period of low signal reach
Threshold value, the command
string will be executed