Specifications

RV-M7 Technical Manual

16. MIMIC Mode Overview

A MIMIC mode allows two or more M7s to mimic each other’s digital I/O. When in the MIMIC

mode, the M7 will periodically transmit its digital status. The M7 will also continue to operate as a

radio modem, sending/receiving data using pins 2&3 of the DB9, but the other I/O pins of the DB9

will be used for digital input/output.

Normally, the Serial I/O connector operates like an RS-232 serial interface. If the MIMIC mode is

enabled, the operation of the radio is modified to transmit the digital status of the INPUT0 and

INPUT1 pins across the radio link, and output their status on the OUT0 and OUT1 pins.

There are two aspects to the MIMIC mode:

1. The transmitter that sends the status of its digital inputs. This is enabled with the MIMIC X

Y command.

2. The unit that receives the over-the-air MIMIC message, and sets its digital outputs to match

the inputs of the sending station. This function is enabled with the ATIO 1 command. ATIO

1 configures the DB9 serial port to operate with RS-232 signal levels, and use the digital

control lines for digital I/O instead of RS-232 flow control. ATIO 0 turns off MIMIC reception

ability, and the digital I/O pins will operate as flow control signals.

The goal of the MIMIC mode is quite simple: Flip a switch at one location, and have something at

another location turn on or off.

Please refer to Technical Brief AN163 for more information on the MIIC mode.