724-746-5500 | blackbox.com
Page 30
724-746-5500 | blackbox.com
Chapter 7: RS-232 Protocol Commands
7.3 Data String Format
The data string contains four elements.
[Command] [ ] [Data] [;]
The format is:
1. Command
2. Space
3. Data
4. ;
There is a single space after the command and before the data string. The data string must conclude with a semicolon “;”
(without the quotation marks). All text is full ASCII code and is not case-sensitive. LINK is the same as Link. You can use either
capital letters or lower-case letters and get the same result.
The Link command must be sent first. This establishes a communications link between an external controller (or computer) and
the device you wish to control. When you have an established link, communication via the IR port is disabled. The front panel
remains operational.
The format is:
LINK 01; This will establish the link.
Your commands:
LINK 00; This will terminate the link.
Devices that are firmware version x.x or higher will return a status.
Status is command dependent.
For example: Response: [SKU] [ ] [Status] [;]|
The status is a two-digit numerical code.
Specific details are discussed later in this document.
NOTE: If at any time the AVSC-7DA-HDMI receives an invalid command, a response of “AVSC-7DA-HDMI 01” will be returned.