The manual describes the HLM20 advanced language module’s features, specifications, installation, and software development environment for ATCS PPC controllers.
This document provides a complete overview of the HLM20 advanced language module, including its hardware interfaces, LED indicators, DIP switch functions, and connector pin definitions. It also details the software development tools, architecture, and provided function libraries for creating applications that communicate with ASCII devices.
Installation instructions cover rack mounting, power considerations, and switch settings, while the software section explains required PC hardware, operating system, and the supplied development utilities. Sample code and API references are included for developers. This manual is written in Chinese.
| Interface | RS-232C/422 |
|---|---|
| Protocol | Asynchronous full/half duplex |
| Application program capacity | 120 K bytes |
| Data buffer size | 512 bytes |
| Supported baud rates | 1200, 2400, 4800, 9600, 19200, 38400 bps |
| Parity | None, Odd, Even |
| Isolation method | Optical isolation |
| Maximum current consumption | 450 mA |
| Weight | 300 g |
The HLM20 module provides two serial communication ports, COM1 and COM2.
Set DIP switch SW1 to the ON position; this configures COM1 for RS‑422 communication.
The module’s maximum current consumption is 450 mA.