Altus QK1402 Serial Interface Module

Feature & Principle

It is Altus Quark series serial communication interface module. It connects to the internal I/O bus of the PLC CPU and expands serial communication ports. It converts PLC bus data into RS232 or RS485 signals to communicate with field instruments. It integrates watchdog circuit for communication supervision, TX/RX and status LED indicators for easy diagnosis. Different firmware versions support Modbus RTU master protocol or proprietary driver for specific flow and level meters.

Specifications

Model: QK1402 Brand: Altus Compatible CPU: QK801, QK2000, AL2003, AL2004 Interface: RS-232C / RS-485 Protocol: Modbus RTU master / dedicated instrument protocol Operating temperature: 0℃ ~ 60℃ Storage temperature: -25℃ ~ 70℃ Protection: IP20 Weight: 420g Application: Flow meter, level sensor, field instrument data acquisition Certification: CE

Components & Diagnostics

Main control PCB, serial transceiver chip, watchdog circuit, status LED, bus connector. Common faults: communication timeout, no TX/RX signal, module not recognized by CPU, unstable serial link.

Product Brief

QK1402 serial communication module, Altus Quark PLC system spare widely used for field instrument communication cabinet overhaul and replacement.