Brand: Generic
Category: Computer Drive
Document Type: Manual
Language: EN
Manual for LCD3215/LCD4215
Uploaded: Nov. 21, 2025, 7:59 p.m.
Warranty Information
No specific warranty period is mentioned in the provided document excerpts.
This manual provides instructions for the external control of LCD3215/LCD4215 displays via RS-232C communication. It details the application, connectors, communication parameters (asynchronous, 9600bps, 8bits, None, 1 bit, ASCII), and communication timing (minimum 600ms packet interval).
The document outlines the communication format, including Header, Message, Check Code, and Delimiter. It describes various message types such as 'Get Parameter', 'Set Parameter', 'Command', and their respective replies. Specific procedures for changing settings like brightness, reading temperature sensors, power control, asset data read/write, date/time management, and schedule control are explained with detailed message examples.
It also covers self-diagnosis, serial number and model name retrieval, and various operational codes for picture and audio settings.
Troubleshooting and error codes
| Item | OP code page | OP code | Parameter | Remarks |
| 11.1 Self-diagnosis status read | ||||
| 1) The controller requests the monitor to read Self-diagnosis status. | ||||
| Header | Message | Check code | Delimiter | |
| SOH-0-A-0-A-0-4 | STX-B-1-ETX | BCC | CR | |
| Header | ||||
| SOH (01h): Start Of Header | ||||
| 0 (30h): Reserved | ||||
| A (41h): Monitor ID | ||||
| LCD3215/LCD4215 must be ASCII A (41h). | ||||
| 0 (30h): Message sender is the controller | ||||
| A (41h): Message type is Command | ||||
| 0-4(30h, 34h): Message length. | ||||
| Message | ||||
| STX (02h): Start of Message | ||||
| B-1 (42h, 31h): Self-diagnosis command | ||||
| ETX (03h): End of Message | ||||
| Check code | ||||
| BCC: Block Check Code | ||||
| Refer to the section 4.5 Check code for a BCC calculation. | ||||
| Delimiter | ||||
| CR (0Dh): End of packet | ||||
| 2) The monitor replies a result of the self-diagnosis. | ||||
| Header | Message | Check code | Delimiter | |
| SOH-0-0-A-B-N-N | STX-A-1- | BCC | CR | |
| ST(0)-ST(1) ------ ST (n)-ETX | ||||
| Header | ||||
| SOH (01h): Start Of Header | ||||
| 0 (30h): Reserved | ||||
| 0 (30h): Message receiver is the controller |