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Load airtime 

(L)

Query airtime 

(Q)

Sub-parameters

Airtime voucher number

(Airtime)

 

Loads or queries 
airtime  

 

 

 

AT

(Query Phone)

 

Query phone 
settings 

 

 

 

Phone number (up to 19 digits)

QP

OU1PU

 

Sets Output 1 as pulsed

OU1LA

 

Sets Output 1 as latched

OU1PT

 

Sets Output 1 pulse time in
milliseconds

OU2PU

 

Sets Output 2 as pulsed

OU2LA

 

Sets Output 2 as latched

OU2PT

 

Sets Output 2 pulse time in 
milliseconds

SS

   

Requests Signal strength

CS

   

Changes SIM card PIN number

EP

   

Enables SIM card PIN checking 

DP

    

Disables SIM card PIN checking

SP

   

Sets SIM PIN in memory only

QF

   

Queries the Firmware version

QS

   

Queries the Module settings 

NP

   

New system password  

BE

   

Backs up EEPROM

RE

   

Restores EEPROM

IO

   

Input/Output mappings

QB

   

Queries the battery voltage

CL

   

Clears the transaction logs

REBOOT

 

Reboots the Module

SLE

  

Enables sticky latches

SLD

  

Disables sticky latches

RSL

  

Resets sticky latches

STR

  

Sets the string number and 
associated text

ATE

  

Enables the automatic hourly
airtime query

ATD

 

Disables the automatic hourly  
airtime query

INxR

 

Makes the selected Input rising 
edge active

INxF

 

Makes the selected Input falling 
edge active

INxB

 

Makes both of the selected Input 
edges active

INxBT

 

Sets the selected Input Blanking
Time

(Configuration) 

Configure Inputs, 
Outputs and 
system settings 

 

OU1

 

Activates Output 1

DOU1 

Deletes Output 1

OU2 

Activates Output 2

DOU2 

Deletes Output 2

IN1  

Activates Input 1

DIN1 

Deletes Input 1

IN2  

Activates Input 2

DIN2 

Deletes Input 2

DIN1S 

Deletes Input 1 string

DIN2S 

Deletes Input 2 string

DOU1S 

Deletes Output 1 string

DOU2S 

Deletes Output 2 string

(Edit Phone)

 

Edit a phone                       

 

 

 

EP

Phone number (up to 19 digits)

(Delete Phone) 

Delete a phone 
number from the 
system                           

 

 

 

DP 

All commands must start with 

‘p.xxxx’

, where 

xxxx

 is a user- 

defined four-digit password. The default password is 

1234

For security purposes, this should be changed on commissioning.

&

Each command and parameter must be separated by 

period (.)

&

Commands can be concatenated (linked), and must be 
separated by a 

space ( )

&

The maximum message length is limited to 

160 characters

&

Commands are 

not

 case-sensitive 

CO

Phone number(s) (up to 19 digits each). 
Output to be activated by a Missed Call or 
SMS (OU1/OU2)
Input to be monitored (IN1/IN2)
 

Sub parameters

 

User Limit UL (1–65536 activations)

²

Output text string (user-configured messages 1-20)
Input text string (user-configured messages 1-20)
2. A user limit restricts the number of
 

times a Missed Call will activate the unit. 

 

Once the user limit is reached, the phone 

 

number will automatically be deleted from 

 

the system

(Add Phone)

 

Add a phone 
number to the 
system

AP   

4. Command Overview

Parameters

Four-digit password                                           

 

 

 

(Password) 

             

System 
password                            

 

 

 

P    

Description

If you add a ‘space’ and then the text ‘

ACK

’ 

to the end of any command, you will receive 
an SMS back confirming that the command 
has been received by the Module. For 
example, p.xxxx.

DP

.0841234567

 ACK

 

(Airtime)

 

Loads or queries 
airtime  

 

 

 

ACK

Summary of Contents for G-SWITCH-22

Page 1: ...Centurion Systems Pty Ltd www CentSys com G SWITCH 22 2G GSM Module Programming Guide TM...

Page 2: ...or SMS Any activation from the user initiated outside of the specified time period will be ignored For instance a user can be granted access between 8 00 and 17 00 Monday to Friday and his access barr...

Page 3: ...eletes Output 2 IN1 Activates Input 1 DIN1 Deletes Input 1 IN2 Activates Input 2 DIN2 Deletes Input 2 DIN1S Deletes Input 1 string DIN2S Deletes Input 2 string DOU1S Deletes Output 1 string DOU2S Dele...

Page 4: ...means of the following command structure p xxxx AP phone number OUz y INz y In this instance xxxx again represents the password z is the number of the Input Output to which one wishes to assign a tex...

Page 5: ...the following command p xxxx co lm where xxxx represents the system password p xxxx AP 0823359981 OU2 10 IN1R 3 IN1F 4 Adds phone number 0823359981 to the system and configures Output 2 to be activate...

Page 6: ...Deletes phone numbers 0841234567 0837654321 and 0827766554 from the system Description Parameters Phone number s up to 19 digits Delete Phone from the system DP DP Deleting a Phone This command allows...

Page 7: ...system Command Description p xxxx CO CS yyyy Change the SIM card PIN code yyyy is the NEW PIN code p xxxx CO EP Enable checking of the SIM PIN number on startup p xxxx CO DP Disable checking of the SI...

Page 8: ...e of the commands below OU OU1on Output command Output 1 on OU OU2on Output command Output 2 on OU OU1off Output command Output 1 off OU OU2off Output command Output 2 off OU OU1on2off Output command...

Page 9: ...phone number will activate Output 1 The incoming please call me SMS must contain the Please call text in order to trigger output 1 p xxxx CO PCMS call 0811234678 Configures the Module so that a Please...

Page 10: ...ems Pty Ltd reserves the right to change any product without prior notice All product and brand names in this document that are accompanied by the symbol are registered trademarks in South Africa and...

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