PP1004-V05 PicoServ Serial IO and Terminal Emulator Module

PicoServ Serial IO and Terminal Emulator Module

Details

Part of the family of IO expansion modules for the PicoServ miniature web server system, the serial IO module provides a means of transferring data to and from a serial port device using a web browser, mobile phone or SNMP network management system.

The serial I/O module stacks directly onto the PicoServ web server or SMS module to provide remote connectivity to devices using an RS232 serial port. A terminal emulation mode allows the control of legacy devices which normally require the direct connection of a VT100 or similar terminal to the device. Up to 8 serial I/O modules can be connected to one PicoServ web server module. Three basic modes of operation are provided, Raw data mode, VT100 Emulation mode and dumb terminal emulation mode.

Direct or Raw Mode

In this mode serial data can be sent directly from a web browser, NMS or mobile phone to any of the RS232 serial ports (serial I/O modules) in a PicoServ system.

Serial data received from connected devices is buffered in the serial I/O module and can be requested and displayed in a web browser or mobile phone via an SMS text message.

VT100 or Dumb Terminal Emulation Modes

A built-in VT100 terminal emulator stores a virtual screen image within the serial I/O module. The screen image can be displayed in a web browser thus turning the browser into a virtual VT100 terminal. This mode therefore provides a convenient way to manage legacy VT100 compatible devices or systems remotely via a network or the Internet.

Serial Data Parsing

When configured to operate in polled mode the module will parse an incoming data string and allocate particular groups of characters to user defined parameter fields. Up to 16 user defined parameters are available.

Each of the 16 user parameters can be up to 16 characters long and contain numeric or string data.

In addition to parsing an incoming data string an optional user defined character string can be transmitted from the module at programmable intervals in order to “poll” or request a data string from an external device.

Alarm Monitoring

Each of the 16 user parameter values can be monitored and compared with a user defined “Alarm Rule” If the alarm rule becomes true an alarm status is signaled.

Datasheet