QJ71C24N-R2 Serial Communication Module Appearance Change Notice

This technical bulletin announces a change in the external appearance of the MELSEC-Q series serial communication module QJ71C24N-R2, specifically the addition of a shell to the RS-232 connector contact part and a change in the connector mating base from rectangular to hexagonal. The change, effective for products manufactured from October 2022 onward, aims to ensure stable parts procurement and high productivity, with no impact on general specifications, performance, or functions.