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Mitsubishi FX5-485-BD Communication Expansion Board

Mitsubishi FX5-485-BD Communication Expansion Board

Series#: Mitsubishi

Product Details

Model: Mitsubishi FX5-485-BD — a dedicated communication expansion board for FX5U/FX5UC series PLCs.
Enables RS-485 serial communication for networked control and data exchange.
Supports multiple programming languages: Ladder, ST, and FBD/LD for flexible automation.
High-speed processing: LD X0 and MOV D0 D1 instruction times at just 34 ns.
Built-in clock with ±45 sec/month precision at 25°C for time-critical applications.
Expandable I/O capacity up to 512 points including remote I/O.
100% Brand New & Original, securely packed and ready for reliable global shipping.

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Specification

Datasheet (PDF)

The Mitsubishi FX5-485-BD is a compact, high-performance communication expansion board designed specifically for the FX5U and FX5UC series PLCs. It adds robust RS-485 serial communication capability, enabling seamless integration into distributed control networks, remote monitoring, and multi-drop configurations. This module leverages the FX5 platform’s advanced processing power — with instruction execution times as low as 34 nanoseconds — and supports a wide range of programming languages including ladder diagram, structured text, and function block diagram. Whether you are upgrading existing systems or building new automation lines, the FX5-485-BD ensures reliable, real-time data exchange with minimal latency.

Parameter	Specification
Control System	Stored-program repetitive operation
Input/Output Control System	Refresh system (Direct access input/output allowed via DX, DY)
Programming Language	Ladder diagram (LD), Structured text (ST), Function block diagram/Ladder (FBD/LD)
Programming Expansion Function	Function block (FB), Function (FUN), Label programming (local/global)
Constant Scan	0.2 to 2000 ms (set in 0.1 ms increments)
Fixed Cycle Interrupt	1 to 60000 ms (set in 1 ms increments)
Timer Performance	100 ms, 10 ms, 1 ms
Number of Program Executions	32
Number of FB Files	16 (Up to 15 for user)
Execution Type	Standby, initial execution, scan execution, fixed-cycle execution, event execution
Interrupt Type	Internal timer interrupt, input interruption, high-speed comparison match interrupt, interrupt from module
Instruction Processing Time (LD X0)	34 ns
Instruction Processing Time (MOV D0 D1)	34 ns
Memory Program Capacity	64 k steps (128 kbytes, flash memory)
SD Memory Card	SD/SDHC memory card: Max. 4 Gbytes
Device/Label Memory	120 kbytes
Data Memory/Standard ROM	5 Mbytes
Flash Memory Write Count	Max. 20000 times
File Storage Capacity (Device/Label Memory)	1 file
Program Files (P) / FB Files (FB)	P: 32, FB: 16
SD Memory Card Capacity	2 Gbytes: 511Q1, 4 Gbytes: 65534Q1
Clock Function	Year, month, day, hour, minute, second, day of week (leap year automatic detection)
Clock Precision	Monthly difference: ±45 sec at 25°C (typical value)
Number of Input/Output Points	256 points or less
Number of Remote I/O Points	384 points or less
Total I/O Points (1) + (2)	512 points or less
Power Failure Retention Capacity	12 K words maximum

Communication Interface: RS-485 serial port for multi-drop networking up to 384 points remote I/O.
High-Speed Processing: 34 ns per basic instruction ensures ultra-fast logic execution.
Memory Architecture: 64 k steps program memory, 120 kbyte device/label memory, and 5 Mbyte data memory.
Flexible Programming: Supports LD, ST, FBD/LD, plus FB and label programming for modular code.
Interrupt Handling: Internal timer, input, high-speed comparison match, and module interrupts for real-time control.
Power Backup: Retains up to 12 K words of data on power failure for critical process recovery.
Environmental Tolerance: Clock accuracy within ±45 sec/month at 25°C, suitable for industrial environments.