Gasboy SDI Interface User Manual download pdf (Page 14)

SCIII UNITEC Interface 7

Gasboy CFN Series

Reset

To reset the SDI box, momentarily lower (CLOSE) the RESET switch.

Clear memory

To clear application memory (only do this under instruction from qualified support

engineer):

1. CLOSE position 6, enabling memory clear.

2. Wait for the LED to begin flashing in bursts of five short flashes.

3. OPEN position 6. When the Site Controller next talks to the SDI, it will

download a new application program.

Terminating the application

To terminate an application, causing the SDI to request new application download:

1. CLOSE SWA-6.

2. When LED begins flashing groups of five quick flashes, CLOSE SWA-8.

3. OPEN SWA-6.

4. OPEN SWA-8.

5. After the Site Controller says “SDI came up”, the LED will flash somewhat

irregularly as a new application is downloaded.

6. When the application is loaded, it takes over the LED. See the application

documents for LED behavior.

A blank SDI will display no LED flashing at all. While a malfunction may also cause

this, re-loading the SDI is the first thing to try.

Booting an SDI

To boot a blank SDI from DOS PC:

1. Set up a Gasboy RS485 converter box jumpers:

You will need the converter’s power supply plugged in.

2. Connect the serial cable to from PC COMM port 1 or 2 to Gasboy RS485

converter RS232 port, and a RS485 cross cable from the RS485 converter

RS485 port to the SDI RS485 port.

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DB25 Connector

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Gasboy SDI Interface User Manual Page 14