DNF Controls ST420-CP - Manual (Page 6)

ST420 Control Panel 6 6
ST420 External Control System
Key LCD Display Text:
ÍÍSTX + BC + ‘A’ + Switch# + Mode + Text (null terminated) + Checksum
BC: Byte count of all bytes between BC and Checksum, exclusively
SW#: 00
to 30
Mode: 0 = Normal character size, 6 characters per row, 3 rows.
1 = Large character size, 1 character per display.
Text: Maximum of 18 bytes, NULL terminated
STX + 01 + ACK + Checksum ÎÎÎÎÎÎÎÎ
NOTES:
1. If SW# = 0, the following text is displayed on all 30 switches.
2. If there is no text attached to the message, (Mode byte is immediately followed by a NULL) ,
the specified switch (switches) are cleared.
Key LCD Color:
ÍÍSTX + BC + ‘C’ + Switch# + Color + Checksum
BC: Byte count = 3
SW#: 00
to 30
Color: 0 = Off
1 = Green
2 = Orange
3 = Red
STX + 01 + ACK + Checksum ÎÎÎÎÎÎÎÎ
NOTE:
If SW# = 0, the following color is applied to all 30 switches.