R08PCPU Melsec-Q Series PLC CPU Module - Mitsubishi Electric Programmable Logic Controller

MELSEC iQ-R R08PCPU

R08PCPU Redundant CPU

R08PCPU Module Specifications

R08PCPU

MELSEC iQ-R R08PCPU Redundant CPU module offers high-speed processing, dual-system redundancy, and detailed R08PCPU Module Specifications for mission-critical industrial automation reliability.

Specification

SEODescription

The MELSEC iQ-R R08PCPU is a high-performance Redundant CPU module designed for mission-critical industrial automation systems, offering seamless failover capabilities to ensure uninterrupted operation. As part of the R08PCPU Module Specifications, it supports direct connection with up to 64 I/O modules via a high-speed backplane, featuring 32 digital input points and 32 digital output points integrated for basic control. The module includes dual Ethernet ports (10/100BASE-T) for network redundancy, CC-Link IE Field communication, and serial RS-232/485 interfaces. Operating within a 24 VDC ±10% voltage range and a temperature tolerance of 0°C to 55°C, it excels in harsh environments like power plants, oil refineries, and chemical processing. Key advantages include millisecond-level switchover during faults, enhanced diagnostics, and compatibility with MELSEC iQ-R series expansion modules. However, its complexity requires specialized programming tools and higher initial investment compared to standard PLCs.

SEOSpecification

Parameter	Specification
Series	MELSEC iQ-R R08PCPU
CPU Type	R08PCPU Redundant CPU
Processing Speed	0.88 ns/instruction
Program Memory	1.6 MB
Redundancy Function	Dual-CPU hot standby, automatic switchover
I/O Points	Up to 128 modules per system
Communication Ports	Ethernet, RS-232, MELSECNET/H
Power Supply	24 VDC ±10%
Operating Temperature	0°C to 55°C
Certification	CE, UL, cUL
Mounting	DIN rail or direct installation
Redundancy Sync Time	≤10 ms
Max. Modules per Rack	64 modules
Weight	0.35 kg

*Table includes key specifications for MELSEC iQ-R R08PCPU redundant CPU module.*

SEOQandA

question:Does the company provide technical selection services?
answer:Yes, we offer professional technical selection services to meet your needs.
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream payment methods.
question:Do you have a professional product selection engineering team?
answer:Yes, we have a dedicated team of product selection engineers with expertise.

SEOQandA_Product

question:Why does R08PCPU fail to communicate with external devices?
answer:Check communication cables, settings, and ensure correct protocol configuration in the programming software.
question:How to resolve R08PCPU program upload errors?
answer:Verify software compatibility, update firmware, and ensure no memory corruption or write-protection is active.
question:What causes R08PCPU to enter error mode repeatedly?
answer:Inspect power supply stability, I/O module connections, and scan for program logic conflicts or hardware faults.
question:How to fix R08PCPU overheating issues?
answer:Ensure proper ventilation, clean dust from cooling components, and avoid exceeding environmental temperature limits.
question:Why does R08PCPU not recognize installed expansion modules?
answer:Confirm module compatibility, re-seat connections, and verify configuration in the system settings.