RELAY SWITCHING
SPDT relays - 10A, 110VDC, 380VAC (non-inductive loads)
Lethal AC should not be switched via the relays.
Switch DC to an external contactor as a safety precaution.
Relay control options
!Turn relay on and stay on (on)
!Turn relay off and stay off (off)
!Pulse relay on for a defined time and turn off again (pls)
!Toggle the state of the relay (tog)
NOTE: The last command received will always determine
the final relay state.
SMS command switching
Relays can be switched by sending SMS commands to the
unit. The unit replies to the command to confirm that the
operation was successful. If no confirmation SMS is received,
check that the unit has not swopped to the alternate SIM card.
Basic command to operate relays - $1234*rlyn*opr
Examples
Pulse relay 2 - $1234*rly2*pls
Turn relay 1 off - $1234*rly1*off
See separate SMS command guide for detailed instructions.
IMPORTANT
When using dual SIMs, the user may need to try both
mobile numbers as the unit may have switched SIM cards.
SMS command shortcuts
Using the programming software, define simple SMS shortcut
commands that will be executed by the SMX unit.
SMS sender verify - If enabled in the programming software,
only remote SMS commands from the message recipient list
will be accepted. See security setup programming page.
Missed call switching
Relays can be switched by missed calls from up to 500 mobile
numbers, incurring no network charges.
The unit terminates incoming missed calls, confirming that the
call was received. It does not necessarily confirm any action
as the number may not be programmed into the unit.
Remember: Missed calls will not function properly if the SIM
card is not CLIP enabled.
Access lifespan
In the programming software, limit the number of times a
mobile number can switch a relay (1-255 operations).
The “0” setting allows infinite operations.
Enable confirmation SMS
If enabled in the programming software, an acknowledgment
SMS will be sent if the action is performed successfully.
IMPORTANT
When using dual SIMs, the caller may have to try both
numbers.
Operational time windows and week day selection
Limit missed call operations to a time window and to selected
days of the week.
Timer switching
64 Timers can be programmed to operate relays once a day at
a selected time. Configure using the programming software or
by remote SMS command. Timer function confirmation SMS’s
can be enabled and sent to the recipient numbers.
Machine to machine functions
M2M reporting happens independently of messages sent to
the 10 recipient numbers.
Base station reporting
Send telemetry SMS messages to up to 4 base stations
(normally at a control room). Input the following programming
information:
1. Base station mobile numbers
2. M2M ID - Identifies the SMX unit at the base station
3. Define M2M telemetries - Define the recognizable event
number for each telemetry.
If-this-then-that function
This function sends remote commands (up to 8) to another
SMX or other device following a specific trigger. Input the
following options in the programming software:
1. Select an event or trigger
2. Input the receiving unit’s mobile number
3. Input the command to be sent
Example
Input 1 is connected to a water level sensor in a reservoir.
When the water level drops the sensor triggers
the input. The unit sends a command to another SMX
connected to a pump at a nearby dam. A relay on the unit
switches the pump on to fill the reservoir. Similarly, another
remote command can be configured to switch the pump off.
FUNCTIONS
Connect the SMX to a DSC panel using a SRL-DSC interface
module (sold separately). Enable the DSC functions serial
connection option on the General SMS messaging setup page
of the programming software.
The following functions can be performed by SMS command.
- Arm/disarm in stay or away modes and by partition
- Trigger panic alarm remotely
- The panel will report its status by SMS when it is
armed or disarmed by SMS or locally via the keypad.
See the remote command guide for DSC commands.
DSC panel models currently supported: Pc5005, Pc5010,
Pc5020, Pc1808, Pc1864, Power832, Power864.
Control
panel SRL-DSC
Serial
interface
