COM-4068 is a digital output module that provides 8 channels of A-type relay output. It has a high relay on and off time and supports RS485 communication interface with standard ASCII protocol. The module has a 16-bit effective resolution and various contact capacities for AC and DC circuits. It also features insulation resistance and built-in watchdog timer.
The COM‑4068 is an 8‑channel A‑type digital I/O controller with RS‑485 ASCII communication. It supplies up to 16‑bit resolution and includes AC/DC contact ratings, power consumption data, and mechanical dimensions.
The manual describes installation, wiring diagrams, command formats, and how to use the RTECH tool software for configuration and testing. It also lists common ASCII commands and troubleshooting information. This manual is written in Chinese.
| Number of I/O channels | 8 |
|---|---|
| Resolution | 16 bits |
| AC contact rating | 125 V @ 0.6 A, 250 V @ 0.3 A |
| DC contact rating | 30 V @ 2 A, 110 V @ 0.6 A |
| Supply voltage | +10 V to +28 V DC |
| Power consumption | 0.8 W @ 24 V DC |
| Operating temperature | -25 °C to 70 °C |
| Dimensions (W×D×H) | 120 mm × 75 mm × 30 mm |
It uses RS‑485 with ASCII command format.
The device provides eight digital I/O channels.
The controller operates from +10 V to +28 V DC.
It consumes 0.8 W when powered at 24 V DC.