The PCM-9861 installation guide provides hardware setup instructions, specifications, and connector details for the PC/104 8‑channel RS232/RS485 interface card.
The PCM-9861 is a PC/104 interface card that offers eight RS232/RS485 serial channels using high‑performance ST16C550 UART chips. Each channel supports full‑duplex RS232 or half‑duplex RS485 communication with up to 1.5 Mbps data rates.
This hardware installation manual includes the card specifications, a list of accessories, jumper and connector locations, pin definitions, and detailed UART signal pinouts to help users install and configure the card correctly. This manual is written in Chinese.
| Serial channel count | 8 channels |
|---|---|
| Bus interface | 16‑bit PC/104 |
| Maximum transfer rate | 1.5 Mbps per UART |
| Interrupt usage | 1 interrupt number |
| UART chip type | ST16C550 |
The PCM-9861 provides eight serial channels, which can be configured from 1 to 8 as needed.
Each UART on the PCM-9861 can transfer data at up to 1.5 Mbps.
The package includes one PCM-9861 card, a CD with driver/demo program, and a test wiring harness.
The card uses a single interrupt number for all channels, simplifying interrupt management.