Description of Features

User Features

LEDs show status of module, indicating Modem or PC connection and Data Flow.

Override button can be used as manual reset.

Site name and 2 modem numbers can be stored.

Can store up to 5 alarms.

DIN rail mounting, suitable for panel mounting

Commissioning

On power up the SLTi detects that the internal modem is present and sends the initialisation string. The top lamp changes from Amber - no active RS232; to Green - modem connected.

As this is the integrated modem (SLTi hardware 0034/001A), the parameter SLTi should be set to match the operating mode. This is factory set. The baud rate, data speed, and connection type are also factory set, do not alter these parameters.

PSTN Modem Version

The product includes 3m of phone cable, and a 24VAC transformer.

The SLTi-PSTN incorporates a 56K PSTN modem. There is a grey RJ11 connector on the SLTi that provides the phone line connection.

When the SLTi is powered it will detect the internal modem and send the initialisation string, you will see this as several flashes of the Rx/Tx lamp. The SLT status lamp will be green. It will then wait for valid data to be received. Either it will respond to an external call in or to a network alarm.

Cellular Modem Version

The product includes 5m of coaxial cable, the GSM aerial, a SMA to FME adaptor, and a 24VAC transformer.

The SLTi-GSM incorporates a Cellphone modem. There is an external brass connector on the SLTi that provides an external aerial to be connected. A SIM card is required before the internal GSM modem is able to operate.

The SIM card can be inserted by the following: Have the module unpowered while changing the SIM card. Remove the front cover and slide the PCB to the left to reveal the SIM card holder placed on the underside of the PCB. Unlock the sim card holder by sliding plastic holder in the labeled direction, then flipping it upward. Insert the SIM card by sliding the non-angled edge in first, with the gold contacts facing up. Next close the SIM card holder by closing the latch, then sliding into the 'Lock' position. Reassemble the unit.

The aerial should be placed in a position where a good signal strength can be obtained. A good signal stength is a value of 20 or above. If this is not obtainable, smartKontrols may be able to provide a higher gain aerial to increase the signal stength.

To check signal strength and error rate for the cellular connection, use a zone controller to view the SLTi config parameters. Scroll to SGNL 0 to 31 (99 means error), 31 is best, press display to refresh the value. Error rate is given on BERR 0 to 7, 0 is good 7 is bad (99 means not available or error). These values are not available from a dialled in connection. Make sure the module is powered, and has been registered on the system.

When the SLTi is powered it will detect the internal GSM modem and send the initialisation string, you will see this as several flashes of the Rx/Tx lamp. The SLT status lamp will be green. It will then wait for valid data to be received. Either it will respond to an external call in or to a network alarm.

Dial out alarms

Setting telephone numbers and site name.

If auto-dialled alarms are to be used, it is necessary to set a unique identifier for the site (so that the alarm can be traced), and the ‘phone number of the supervisor(s).

[s1]N0($) allows the site name to be displayed
[s1]N1(#) allows telephone number 1 to be displayed
[s1]N2(#) allows telephone number 2 to be displayed.

To edit these entries, create a temporary page using the syntax:
[s1]N0($="head_office") - will set the site name.
[s1]N1(#="01456 345123") - will set the 1st ‘phone no.

The number or site id can be up to 20 characters long. The telephone number can contain any special characters required dial the number correctly with the selected modem.

When an alarm is received by the SLTi, it will attempt to connect using number 1. If this fails it will retry after a one minute delay. It will continue to try number 1 at ever increasing time intervals, (number of tries in minutes) until it has tried 5 times.

The second number will then be tried initially at 5 minute intervals increasing to 10 minute intervals until it has been tried 5 times.

The SLTi will then revert to the first number and try a further 10 times before it gives up. The total elapsed time between first and last try will be about 3.5 hours.

The telephone number must contain at least four digits (0-9) to be considered as a valid telephone number. If the number is not valid then the SLTi will use the remaining number if valid or will ignore dial out completely.

The SLTi will store the first five alarms received during the connection process, after this alarms will be lost.

Registration

A maximum of four SLT/SLTi modules can be used on one SeaChange network. The SLTi must be registered to the System Housekeeping Module (e.g. boiler, floor controller) to have its address set.

When the SLTi receives a registration message from any module it generates an alarm message which the Doorway Supervisor will log. The alarm message generated is:

[NODE REGISTRATION file name BLR2q Neuron identity 007895A21100]

This will not be automatically dialled out.

InSite Codes

Syntax used in the RS232 protocol is of the form:

Module Addresses:

Submodule Address Examples:

Monitor Module Support

The SLTi supports recovery of parameters from the monitor module using the device specifier "m". Alarms from the Monitor Module are now decoded with respect to the additional alarm flags, HIGH, LOW alarm etc.

Send Address SNDA

A configuration variable selects this feature which when set translates the {D/S/N} Domain, subnet, node address which is found on alarm messages to the more familiar [DxMy] module adress format used in Doorway and InSite.

Options and Product Codes

Serial Adaptor

SLT / DIN / [version] / [ option]

Options

SC Controls Ltd

PO Box313
Wadhurst
East Sussex
TN5 6JL

phone 08707 606040
fax 08707 606041
e-mail seachange@sccontrols.co.uk
http:// www.seachange.co.uk