Programmable converter box for serial data (RS232/RS422)

The German research icebreaker RV “Polarstern” now operates with programmable converter boxes by FIELAX. This box can read incoming serial data (interfaces RS232/RS422), convert/transform it by a programmable micro controller and output it serially. Multiple boxes have been installed on “Polarstern” to convert NMEA and binary data from a motion sensor to feed devices requiring specialised input telegram formats. Contractor was Reederei F. Laeisz GmbH.

Technical Specification:
Interfaces 3x serial RS232 or 3x serial RS422
Max. Data Transmission on serial interfaces 1 Mbps
CPU 96 MHz
RAM 64 kB
Flash Memory 256 kB
Input voltage 24V ± 10%, 29V absolute maximum
Current consumption 50 mA
Temperature range in operation -20 °C – 70 °C
Temperature range in storage -40 °C – 85 °C
Dimension (without power module) 48 mm x 75 mm x 114 mm (W x H x D)
Weight (without power module) 130 g
Installation method Cap rail
Use case scenario:

Incoming data on port 1: GPS positions as NMEA string $GPGGA
$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47

Incoming data on port 2: Heading as NMEA string $HEHDT
$HEHDT,064.3,T,*2E

Conversion and output on port 3: Propietary binary telegram containing GPS latitude/longitude and heading (shown in HEX format):
c7h4 8423