KL-M4112 analog acquisition module user manual, introduces the basic parameters, installation methods, terminal definitions and wiring, communication settings and other content
The KL-M4112 is a two‑channel analog collection module with 4‑20 mA input range, 16‑bit resolution and high‑precision components. It supports RS‑232 and RS‑485/422 communication via a DB‑9 connector and offers a data refresh period of less than 0.1 s per channel.
The manual covers the main unit specifications, mechanical dimensions, mounting methods, connector pin assignments, communication settings, and safety precautions. It also includes command formats and checksum calculations for interfacing with a host controller. This manual is written in Chinese.
| Resolution | 16 bit |
|---|---|
| Input current range | 4‑20 mA |
| Number of channels | 2 |
| Current drift | +3 µA/°C |
| Supply voltage | 24 V DC (18‑36 V DC range) |
| Operating temperature | -10 °C to 60 °C |
| Storage temperature | -20 °C to 70 °C |
| Weight | 220 g |
It supports RS‑232 and RS‑485/422 via a DB‑9 connector.
The module provides two analog input channels.
The data refresh period is less than 0.1 second per channel.
Each channel accepts a current signal from 4 mA to 20 mA.