Extron Electronics RGB 300 User Manual

Page 29

Appendix A • Programmer's Guide

Extron RGB 300 Universal Interface • User’s Manual

Response:

CMD19, ERC, CKS1, CKS2, EOT

CMD20 (44) - Report Keyboard Lock Status

The Host asks the RGB 300 if the keyboard is locked or
unlocked. The RGB 300 responds with a data byte containing
this information.

Format:

CMD20, CKS1, CKS2, EOT
(44h), (80h), (C4h), (04h)

Response:

CMD20, data1, CKS1, CKS2, EOT

Where:

data1 = 80h if keyboard is unlocked;

81h if keyboard is locked

CMD21 (45) - Set Keyboard Lock Status

The Host tells the RGB 300 to lock or unlock the keyboard.
The command includes a data byte to provide this
information.

Format:

CMD21, data1, CKS1, CKS2, EOT
(45h), - (xx), (cc), (cc), (04h)

Where:

data1= 80h to Unlock the keyboard;

81h to Lock the keyboard

Response:

CMD21, ERC, CKS1, CKS2, EOT

A-17

Using Commands - CMD20,21

CMD22 (46) - Program ID Screen

The Host tells the RGB 300 to change the contents of the ID
screen. The command includes 32 data bytes of ascii
information - 16 bytes for the first line and 16 for the second
line.

Note: Refer to an ASCII table for the necessary codes and set bit7 on.

Format:

CMD22, data1, data2, .- - - , data32, CKS1, CKS2, EOT

Where:

data1 = ascii code of character 1 (on 1st line of display) +

80h

data2 = ascii code of character 2 + 80h
data3 = ascii code of character 3 + 80h
data4 = ascii code of character 4 + 80h
data5 = ascii code of character 5 + 80h
data6 = ascii code of character 6 + 80h
data7 = ascii code of character 7 + 80h
data8 = ascii code of character 8 + 80h
data9 = ascii code of character 9 + 80h
data10 = ascii code of character 10 + 80h
data11 = ascii code of character 11 + 80h
data12 = ascii code of character 12 + 80h
data13 = ascii code of character 13 + 80h
data14 = ascii code of character 14 + 80h
data15 = ascii code of character 15 + 80h
data16 = ascii code of character 16 + 80h

data17 = ascii code of character 1 (2nd line of display) +

80h

data18 = ascii code of character 2 + 80h
data19 = ascii code of character 3 + 80h
data20 = ascii code of character 4 + 80h
data21 = ascii code of character 5 + 80h
data22 = ascii code of character 6 + 80h
data23 = ascii code of character 7 + 80h
data24 = ascii code of character 8 + 80h
data25 = ascii code of character 9 + 80h
data26 = ascii code of character 10 + 80h
data27 = ascii code of character 11 + 80h
data28 = ascii code of character 12 + 80h
data29 = ascii code of character 13 + 80h
data30 = ascii code of character 14 + 80h
data31 = ascii code of character 15 + 80h
data32 = ascii code of character 16 + 80h

Response:

CMD22, ERC, CKS1, CKS2, EOT

A-18

Using Commands - CMD22