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Raveon Technologies Corp.
MIMIC mode features. Here is a wiring diagram for an RS232 DB9 connector to be
wired to the FIO connector.
Built in commands allow users to setup the FIO as they desire. Contact Raveon sales
to have the device pre-configured when it is purchased.
The FIO input pins’ state is measured and recorded every 50mS, and the status in the
input state registers is updated at this interval.
SCADA and Telemetry Use
The FIO is an ideal interface for wireless SCADA and Telemetry systems. It can
operate as a Remote Terminal Unit (RTU) which saves cost in your system. The Tech
Series radio modems support MODBUS RTU communication messages, so Telemetry
systems can utilize MODBUS messages to read and manage the FIOs. See
application note AN234 for details on how MODBUS is incorporated into these Tech
Series modems. AN230 has detailed information about the MODBUS communication
protocol.
Summary of Input and Output functions.
IO pins 4, 5, 6, 7, 12, 13, 14, 15 can be configured with built-in commands to be either
digital inputs, digital outputs.
Digital Input Specifications:
Low-level input voltage:
Less than 0.5V
High-level input voltage:
Greater than 2.2V
Input resistance:
Floating, > 2K resistance.
Digital Output Specifications:
Low-level Output voltage:
Less than 0.5V
High Level Output Voltage:
3.0 - 3.3V
Output resistance:
330 ohms.
4. GPIO and FIO Commands and Configuration
Application Note AN234 has more information about how to use the Tech Series Radios
for SCADA Applications. Here is a summary of the information.
For many SCADA systems, the Tech Series GPIO interface is the ideal interface to
monitor remote devices or control them. The ones with serial interfaces such as RS-232,
USB, and RS485 can be connected to a SCADA controller or HMI to communicate with a
remote Tech Series radio modem that has the GPIO interface.
4.1. SCADA and Telemetry Commands
The following commands are powerful SCADA and telemetry features in Tech Series devices.
