Free A, Q, F, Alpha2, Melsec and FX software. AL-PCS/WIN: Use With: Alpha 2 Programmable Relay Restrictions: no communication with Alpha Controller. GX developer supports all MELSEC controllers from the compact PLCs of the MELSEC FX series to the modular PLCs including MELSEC. This help file includes setup information for the Mitsubishi Melsec FX PLCs. To access the Panel Manager from the C-more Programming Software, from the. More: • • • • • •.