QJ71PB93D Profibus-DP Communication Module, Mitsubishi MELSEC-Q Series PLC Interface

QJ71PB93D

Mitsubishi MELSEC QJ71PB93D

Profibus Communication Module

QJ71PB93D

The Mitsubishi MELSEC QJ71PB93D is a Profibus Communication Module designed for seamless integration with Q series PLCs, enabling efficient real-time data exchange and reliable industrial network connectivity.

Specification

SEODescription

The Mitsubishi MELSEC QJ71PB93D Profibus Communication Module is a versatile interface designed for seamless integration within industrial automation systems. As part of the MELSEC Q series, it enables reliable Profibus-DP slave communication, supporting up to 125 nodes with a maximum data transfer rate of 12 Mbps. This module operates on a 24 VDC power supply (10.2–26.4 V range) and functions within a temperature range of 0–55°C, ensuring stability in harsh environments. It directly connects to the PLC base unit and supports 2,048 bytes of input/output data exchange, facilitating real-time control in manufacturing, process automation, and machinery sectors. Key advantages include robust noise resistance, DIN rail mounting flexibility, and compatibility with GX Configurator-PB configuration software. However, its setup requires specialized knowledge of Profibus protocols, and limited diagnostic tools may complicate troubleshooting. The QJ71PB93D excels in applications demanding high-speed, deterministic communication between Mitsubishi PLCs and Profibus master devices.

SEOSpecification

Parameter	Specification
Model Name	Mitsubishi MELSEC QJ71PB93D
Module Type	Profibus Communication Module
Communication Protocol	Profibus-DP (IEC 61158/EN 50170)
Transmission Rate	9.6 kbps to 12 Mbps (auto-configurable)
Max Nodes Supported	126 nodes (including master)
I/O Points	Up to 244 bytes input/output each
Power Supply	5VDC ±5% (via base unit)
Current Consumption	0.34A (5VDC)
Isolation	Photocoupler isolation (between bus and module)
Operating Temperature	0°C to 55°C
Certification	CE, UL, cUL
Weight	0.15 kg

SEOQandA

question:Do you provide technical selection services?
answer:Yes, we offer technical support to help select suitable products, ensuring compatibility and performance.
question:Why is there a service fee?
answer:Service fees cover transaction processing, documentation, and customer support to ensure smooth operations.
question:Can you offer upgraded or alternative models?
answer:Yes, we provide upgraded or alternative models based on availability and technological advancements.

SEOQandA_Product

question:How to resolve communication failure with QJ71PB93D?
answer:Verify station address, baud rate settings, and ensure terminal resistors are properly installed on the Profibus network.
question:Why does QJ71PB93D show configuration errors in GX Works2?
answer:Check DP master/slave settings, confirm module parameters match network topology, and validate GSD file compatibility.
question:How to fix undetected slave nodes with QJ71PB93D?
answer:Inspect cable connections, ensure unique slave addresses, and verify GSD file registration for all connected devices.
question:Why does QJ71PB93D I/O data stop updating?
answer:Review input/output mapping parameters, check for network interference, and confirm all nodes are in RUN mode.
question:How to troubleshoot firmware update failures on QJ71PB93D?
answer:Follow manual instructions precisely, use correct firmware file version, and ensure stable power supply during update.