The MVI69-MCM Modbus Master/Slave Network Interface Module allows Rockwell Automation® CompactLogix™ Programmable Automation Controllers (PACs) and MicroLogix™ 1769-LRP Programmable Logic Controllers (PLCs) to interface with Modbus-compatible devices. Compatible devices include not only Modicon® PLCs but also a wide assortment of third-party devices found in nearly every industry.