This document introduces the CAN communication function of the H1U/H2U series PLC and provides installation instructions for the CAN communication card. This series of PLC supports free CAN communication instructions, remote module access instructions FROM/TO, and CAN-LINK network function. CAN-LINK is an open protocol based on the CAN bus, which supports up to 63 devices to be connected. This manual only introduces the hardware configuration of the CAN communication card, please refer to other manuals for the use and programming of CAN-LINK.
This manual describes the hardware configuration of the CAN communication card for Inovance H1U/H2U series PLCs, including installation steps, port definitions, and wiring for CAN‑LINK networks. It also provides details on indicator lights, dip‑switch settings, and safety precautions.
The document is intended for technicians installing the card and for users who need to set station numbers, baud rates, and termination resistors to ensure reliable CAN communication. This manual is written in Chinese.
| Maximum CAN‑LINK devices | 63 |
|---|---|
| Termination resistor | 120 Ω |
| High‑speed baud rate | 500 kbps |
| H2U‑CAN‑BD mounting screw | M3×6 self‑tapping |