Software
ATZ97 / M97 Series Programmable DC Load Modbus Interface Software
The Atten ATZ97 / Maynuo M97 Series programmable DC loads has a RS-232 port that can be used for instrument control and acquisition. Rather than using more conventional text based SCPI (Standard Commands for Programmable Instruments) commands, these instruments use Modbus, a protocol designed for PLCs (Programmable Logic Controllers). The M97 series loads come bundled with “M9700 Load Monitor Software” that does a reasonable job in controlling the DC load and recording data. However, I wanted to use the DC load in a test setup with a DC Power Supply to plot the efficiency of DC-DC converters. To accomplish this …