Mitsubishi PLC Drivers

Improvements in Connectivity to Mitsubishi Melsec-Q and Melsec-FX

IGSS has supported communication with Mitsubishi PLC equipment with dedicated drivers since the early 1990s. However, these interfaces (Serial and TCP/IP on Ethernet) largely concentrated on the Mitsubishi Melsec-A series PLCs. While Melsec-A is still used in a huge number of installations, Mitsubishi over the years has extended its product range with extremely powerful and cost-effective new models. The increasing worldwide popularity of these models has prompted the IGSS driver development dept. to write dedicated IGSS SCADA drivers to the Mitsubishi Melsec-Q and Melsec-FX series PLCs.

The IGSS communication driver for Mitsubishi Melsec-FX (Driver ID: 82) uses a serial interface (RS232/RS422) to interface directly to the programming port of the FX PLCs. The Mitsubishi PLC driver supports FX, FX0, FX0N, FX1S, FX2N and FX3U models in the FX series. A wide range of device types are supported by the Mitsubishi PLC driver. These include: Data Registers, Special Data Register, Timers, Counters, Inputs, Outputs, Aux. Relays and States.

Since the driver communicates directly with the PLC using the CPU programming port, there is no need for extra communication ports. Using a small e.g. FX1S-14MR with 5 digital Inputs and 8 digital Outputs and an IGSS FREE50 puts you in business with a very small automation project for less than EURO 250!

The Mitsubishi Melsec-Q series PLCs are a bit more powerful and flexible than the FX series. The IGSS Melsec-Q driver (Driver ID: 79) offers a serial (RS232) interface to the Melsec-Q series PLCs either using a communication board on the Mitsubishi PLC (e.g. the two port QJ71C24N-R2 board) or connected directly to the CPU programming port (using a standard programming cable). The PLC driver supports all popular device types including: Data Registers, Link Registers, File Registers, Timers, Counters, Inputs, Outputs and a variety of different relay types. The driver supports the Mitsubishi FORMAT5 framing format which makes it compatible with all CPU types in the Melsec-Q family of PLCs (e.g. Q00J, Q00, Q01, Q02(H), Q06, Q12H, Q25, Q12PH, Q25PH, Q2A, Q2A-S1, Q2AS, Q2AS-S1, Q2ASH, Q2ASH–S1, Q3A, Q4A, Q4AR).

While both Mitsubishi interfaces uses one or more serial ports (RS232), they are both pretty fast and they easily poll up to 10 register blocks per second.