This manual provides safety, design, installation, wiring, operation, and disposal information for the Mitsubishi Electric LJ71C24 serial communication module.
The manual covers all necessary precautions and guidelines for using the LJ71C24 (and LJ71C24‑R2) serial communication module in MELSEC‑L PLC systems. It includes safety notices, design considerations, installation and wiring instructions, startup and maintenance procedures, and end‑of‑life handling.
Detailed chapters describe the module’s functions, part names, specifications, commissioning steps, system configuration, wiring details for RS‑232 and RS‑422/485 interfaces, and programming settings using GX Works2. Related manuals and warranty information are also provided. This manual is written in Chinese.
| Model | LJ71C24 (also LJ71C24‑R2) |
|---|---|
| Maximum Installation/Removal Cycles | 50 times |
| Terminal Torque Requirement | Tighten bolts within the specified torque range |
The module and terminal block may be installed or removed up to 50 times, as specified by IEC 61131‑2.
Treat the module as industrial waste and dispose of it according to local regulations for industrial waste.