THMK-4014 is a four-channel thermocouple input module with multiple features and characteristics.
The THMK-4014 is a four‑channel thermocouple input module designed for industrial environments. It accepts thermocouples of types J, K, T, E, S, R, B, N and C, provides 0.1 °C resolution, and uses a DS18B20 sensor for cold‑junction compensation. The module can be powered from +10 V to +30 V and offers 3000 V isolation between power/communication and signal circuits.
The manual describes the physical layout, DIN‑rail mounting, wiring diagrams for power, communication (dual RS‑485) and signal terminals, and the use of an 8‑bit DIP switch or smart interface for address and baud‑rate configuration. It also details the three supported communication protocols (Yaskawa, Modbus, PPI) and provides parameter tables for basic, communication, and alarm settings. This manual is written in Chinese.
| Number of channels | 4 |
|---|---|
| Supported thermocouple types | J, K, T, E, S, R, B, N, C |
| A/D conversion resolution | 0.1 °C |
| Cold‑junction sensor | DS18B20 |
| Power supply range | +10 V – +30 V |
| Isolation voltage | 3000 V |
| Installation method | DIN rail |
| Operating temperature range | -20 °C – 60 °C |
| Relative humidity range | 40 % – 80 % RH |
They are configured with the 8‑bit DIP switch: bits 1‑6 set the address (0‑63) and bits 7‑8 set the baud rate (4800, 9600, 19200, 38400 bps).
Yes, the Channel Num parameter can be set from 1 to 4 to limit sampling to fewer channels, which increases the sampling rate for the selected channels.
The isolation voltage is 3000 V.