UMC2330BR11.pdf 7 -© Omniflex1.2 Front Panel LED (Light Emitting Diode) IndicatorsLegend Colour DescriptionNET Green Signal Strength IndicatorON STEADY – Network is connected and signalstrength is acceptableOFF – There is no network connection.TX1 Red Serial Port 1 Transmit ActivityON – The Silent Sentry is transmitting data out of theSerial Port 1 (on the front of the unit).RX1 Yellow Serial Port 1 Receive ActivityON – The Silent Sentry is receiving data coming in onSerial Port 1 (on the front of the unit).TX2 Red Network Transmit ActivityON – On when the Silent Sentry is communicating withthe internal network modem.RX2 Yellow Network Receive ActivityON – On when the internal network modem is sendinginformation to the Silent Sentry.OK Green Silent Sentry OK IndicatorON – Silent Sentry is operating correctlyOFF – No Power or the Silent Sentry is faultyRUN Green Silent Sentry is monitoring for alarmsON – Silent Sentry is operating correctlyOFF – No Power or the Silent Sentry is faultySD Green/Red SD Card IndicatorGREEN – SD Card is inserted and ready.RED – Silent Sentry is writing data to the SD Card.OFF – The light is normally off in the absence of an SDcard.Table 1.1 Front Panel LED IndicatorsNOTE: On Power up, all indicators will light for a few seconds during initialisation. Thereafter, theindicators will resume their normal operation as per the table above.1.3 Front Panel PushbuttonA Serial PORT 1 “SD” pushbutton is located on the bottom right corner of the front plate of the SilentSentry. This pushbutton is used when removing the SD memory card. Before removing the SDmemory card, push this button to tell the Silent Sentry to pause communication with the SD card, adto close all open files so the card can be ejected. Wait for the SD light to go off before ejecting theSD memory card1.4 Serial Port 1The Teleterm Silent Sentry is equipped with a serial port, labelled PORT 1, on the front of the unit.This serial port is used to communicate with other equipment.This serial port can be wired for RS232, RS422 or RS485 communications.The serial port can be configured for one of two protocol sets:a) Modbus protocol (Master or Slave device, ASCII or RTU protocol) is available on this portallowing easy connection to other third party products such as Alarm Annunciators, PLC’s DCSor SCADA systems.b) Conet/s protocol is available for integration into Conet networks with other Omniflex products.