Barco 16x16, HD/SD-SDI, 8x8 manual OpJQUR=jçÇÉ, 12XYZ a 9,9PDQY 1234,31WX 200

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RS-485 Mode

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To switch to RS-485, refer to the “RS-232 Settings Menu” section in Chapter 3. Single commands will be combined with a command delimiter start, device number, command separator and command delimiter end to form a command string as shown below:

•Single Command Format:

cdsidcmd arg1 arg2 ..argncde

•Multiple Command Format:

cdsidcmd arg1 arg2 ..argn,idcmd arg1 arg2

..argN,…,idcmd arg1 arg2 ..argncde

Table B-3.RS-485 Command Syntax

Command	Description
cds	cds is the command delimiter start character '*' (ASCII 42).
id	id is the device number in the range of 1 to 32. This can be a single
	character for values less than 10, no preceding zero is required.
cmd	cmd is any valid Graphics Board command, typically 2 to 6
	characters in length
arg	arg1,2,N is any required or optional parameters need for the
	command

,separates multiple commands

cde cde is the command delimiter end character '!' (ASCII 33).

SExample:

*12XYZ A 9,9PDQY 1234,31WX 200 98!

The command string is started by the command delimiter start character “*”. The first command follows directly after the command delimiter start character. The example shows that device 12 should process the XYZ command with A and 9 as parameters. A comma (ASCII 44) separates the commands. Device 9 will process the PDQY command with a parameter of 1234 and device 31 will process the WX command with parameters of 200 and 98. The command end delimiter character “!” follows directly after the last command to end the command string.

Commands received in the command string will not be processed until the command end delimiter character “!” is received. This format allows commands to be stacked up for transmission to a single device or multiple devices and executed when the cde “!” character is received by all units. Any incomplete or unknown commands will be ignored. The maximum number of commands that can be stacked up per unit is 16. Each unit will only stack those commands assigned to it, even though all units receive the same command string.

During queue processing, no input buffer processing is performed. Characters sent through the serial port during queue processing are still stored in the input buffer. If hardware flow control is not observed, it is important to guarantee that the input buffer limit

MatrixPRO • 16x16 and 8x8 HD/SD-SDI Router • User’s Guide 63