Optiquest iRIS 320 manual Key Features, Terminal Configuration, Wireless IP Connectivity GPRS/CDMA

iRIS 220 / iRIS 320, V1.19 User Guide - 10

2.8 Key Features

2.8.1 Terminal Configuration

All configuration and set-up parameters are modified via a standard ASCII terminal connected to the RS232 serial interface. This means that the user can configure the device without needing specialised configuration software installed on their computer specifically for this purpose. iQuest also supply a network based terminal program (UDPTerminal) that allows set-up to be performed across the GPRS/CDMA-1X network via ASCII socket A. Refer to Section 4.2 for details on the terminal setup.

2.8.2 Wireless IP Connectivity (GPRS/CDMA)

Wireless Internet Protocol connectivity is provided via an on-board modem. Through this interface it is possible to perform configuration changes and retrieve logged data. To facilitate GPRS connectivity with the GSM models, a suitably activated SIM card must be inserted in the device. For all models, it is also necessary to program the unit with appropriate GPRS/CDMA-1X connection settings via a terminal connected to the RS232 serial interface.

The iRIS communicates over a GPRS or CDMA-1X network using UDP protocol via two concurrent data ports. Port A is used for ASCII communication and provides similar terminal functionality to that available through the RS232 serial interface. Port B is used for proprietary System DO (binary) communication and supports time series data retrieval and unsolicited alarm call-in to a HydroTel™ 2000 base station. Thi s port is also used for auto reporting of data to a suitable base station such as the iQuest Data Network (http://data.iquest.co.nz), when the iRIS has been configured to use this mode.

2.8.3 Alternative Wireless Connectivity (CSD/SMS)

Two other wireless connection modes other than GPRS/CDMA-1X are also possible. These are CSD (Circuit Switched Data) or SMS (Short Message Service). As with the GPRS/CDMA-1X mode described above in Section 2.8.2, using either CSD and/or SMS requires either a SIM card with relevant services enabled by the GSM service provider, or in the case of CDMA-1X, the appropriate services enabled by the CDMA provider.

The CSD option is achieved by establishing a dial-up modem connection across the GSM or CDMA network. Once this link is connected, data retrieval and configuration can be performed in a similar manner to the GPRS/CDMA-1X mode.

The SMS option works by sending a preset text message to up to two destination cellphones or SMS receivers. This message contains the iRIS site identification and the current values of all enabled sensors. See Section 5.3 for more information on using the SMS feature.

NOTE: No matter what the modem callback mode is set to (GPRS/CDMA-1X or CSD or SMS), the iRIS will answer any incoming CSD calls and also respond to incoming SMS requests as long as it is not connected using the wireless IP link. The modem callback mode setting only changes the service that is used to notify an alarm or generate a communication test. In this case the selected service and destination phone number is used to call a base modem (CSD) or send a text message (SMS).

2.8.4 Power Management

The iRIS supports three power management modes:

No Power Save

With power management disabled, the internal wireless modem is whenever a GPRS/CDMA-1X or CSD session is not currently active. strength measurements are made and it is possible to interrogate command set via a terminal connected to the serial interface.

maintained in a powered on state While in this state, periodic signal the internal modem using the AT

All on-board communication, I/O and status LED’s are permanently enabled in this mode.

10 iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: iquest@iquest.co.nz