Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC-Q Series – Information/network / QJ71C24N-R2 Mitsubishi MELSEC-Q Series Serial communication

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QJ71C24N-R2 Mitsubishi MELSEC-Q Series Serial communication

MPN: QJ71C24N-R2 · Brand: Mitsubishi Electric (Factory Automation)

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC-Q Series – Information/network
Lifecycle	Active mature
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can QJ71C24N-R2 be shipped?

QJ71C24N-R2 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up QJ71C24N-R2 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for QJ71C24N-R2 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for QJ71C24N-R2, subject to availability and destination.

The Mitsubishi Electric QJ71C24N-R2 is a serial communication in the MELSEC-Q Series. RS-232: 2 channels, transmission speed: 230.4 kbps with 2 channels. Mitsubishi Electric has announced its discontinuation (2029/09 To be end of order) — plan spares now; PartnerPLC also sources it on the surplus market after the end of order. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-Q Series
Category	Serial communication
Type	RS-232
Sales status	2029/09 To be end of order (Mitsubishi Electric)
Outline	RS-232: 2 channels, transmission speed: 230.4 kbps with 2 channels

Specifications

Interface: CH1	RS-232-compliance (D-sub 9 pin)
Interface: CH2	RS-232-compliance (D-sub 9 pin)
Communication method: Line	Full-duplex/half-duplex communications
Communication method: MC protocol communication	Half-duplex communications
Communication method: Predefined protocol communication	Full-duplex/half-duplex communications
Communication method: Nonprocedural protocol communication	Full-duplex/half-duplex communications
Communication method: Bidirectional protocol communication	Full-duplex/half-duplex communications
Synchronization method	Start-stop synchronization method
Transmission speed	50, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200, 230400 bps • Transmission speed 230400 bps is available for only CH1. (Not available for CH2) • Total transmission speed of two interfaces is available up to 230400 bps. • Total transmission speed of two interfaces is available up to 115200 bps when the communication data monitoring function is used.
Transmission distance: RS-232	Maximum 15 m
Data format: Start bits	1
Data format: Data bits	7/8
Data format: Parity bits	1 (vertical parity) or none
Data format: Stop bits	1/2
Access cycle: MC protocol communication	Processes one request during the END processing of the CPU module of the station. Number of scans that must be processed/number of link scans depends on the contents of the request.
Access cycle: Predefined protocol communication	Sends or receives data when requested with the dedicated instruction.
Access cycle: Nonprocedural protocol communication	Sends each time a send request is issued. Can receive at any time.
Access cycle: Bidirectional protocol communication	Sends each time a send request is issued. Can receive at any time.
Error detection: Parity check	Selected for all protocols and when this check is enabled, ODD or EVEN is selected by a parameter.
Error detection: Sum check code	For the MC or bidirectional protocol, selected by a parameter. For the predefined protocol, whether or not a sum check code is needed depends on the selected protocol. For the nonprocedural protocol, selected in the user frame.
Transmission control: RS-232: DTR/DSR control	Enabled
Transmission control: RS-232: RS/CS control	Enabled
Transmission control: RS-232: CD (DCD) signal control	Enabled
Transmission control: RS-232: DC1/DC3 (Xon/Xoff) control	Enabled
Transmission control: RS-232: DC2/DC4 control	Enabled
Line configuration for connection (Target device side : CPU module side): RS-232	1:1
Line configuration for data communication (Target device side : CPU module side): RS-232: MC protocol communication	1:1
Line configuration for data communication (Target device side : CPU module side): RS-232: Predefined protocol communication	1:1
Line configuration for data communication (Target device side : CPU module side): RS-232: Nonprocedural protocol communication	1:1
Line configuration for data communication (Target device side : CPU module side): RS-232: Bidirectional protocol communication	1:1
Number of occupied I/O points	32 points (I/O assignment: Intelligent 32 points)
Internal current consumption (5 V DC)	0.26 A
External dimensions: Height	98 mm
External dimensions: Width	27.4 mm
External dimensions: Depth	90 mm
Weight	0.20 kg

Specifications

General specifications

Refer to the general specifications of the CPU module.

Downloads & documentation

Official documents from Mitsubishi Electric (Factory Automation), downloaded directly from the manufacturer.

Data sheets & manuals

Q Corresponding Serial Communication Module User's Manual (Basic) (SH-080006-W)	PDF · 7.35MB
MELSEC-Q/L Serial Communication Module User's Manual (Application) (SH-080007-O)	PDF · 11.13MB
MELSEC Communication Protocol Reference Manual (SH-080008-AB)	PDF · 6.70MB
Before Using the Product (BCN-P5787E-F)	PDF · 0.17MB
GX Configurator-SC Version 2 Operating Manual (Protocol FB support function) (SH-080393E-L)	PDF · 2.86MB