This report outlines the capabilities, command structure, and operational procedures for "AT Command Station v1.0.4." This firmware version serves as a bridge between a host microcontroller (MCU) and network capabilities. It provides a streamlined interface for controlling Wi-Fi, Bluetooth, and TCP/IP stack functions via serial communication using AT commands.
Before we examine the "write" command, it is essential to understand the v104 context. "Command Station v104" typically refers to a firmware or protocol version (version 1.04) used in specific industrial controllers, remote terminal units (RTUs), or communication gateways. This version is prevalent in:
The "v104" often indicates a stable, mature protocol layer where command structures are well-documented but rigid. The "Command Station" itself is the master device—typically a central PLC or HMI—that issues read/write requests to field devices.
Even experienced engineers encounter issues. Here is a checklist for when write at command station v104 does not work as expected.
| Symptom | Likely Cause | Solution |
|---------|--------------|----------|
| No response | Wrong baud rate or wiring | Verify physical layer and serial settings |
| NAK (0x15) | Invalid register address | Cross-check register map for v104 limits |
| ACK but no effect | Write-protected register | Check station configuration; may require unlock command first |
| CRC error | Noise on line or wrong byte order | Enable CRC checking; swap high/low bytes |
| Command works intermittently | Bus collision (multi-master) | Ensure only one command station writes at a time |
AT commands (Attention commands) are the industry-standard method for controlling modems and communication modules. The "Write AT Command Station" acts as an intermediary interface that allows operators or automated scripts to send specific "Write" commands (AT+CMD=value) to target hardware. The v104 designation indicates a specific build of this station software, often used in manufacturing, quality assurance, or R&D environments to program device parameters (e.g., IMEI configuration, baud rate settings, GPIO states).
