DNF Controls ST400-CP User Manual
Page 10
ST400-CP User Manual
Page 10 of 19
Key Change Status Request Command:
Å Å STX + 01 + ‘S’ + Checksum
STX+ BC + ’S’+ KeyData0 + KeyData1 + … + KeyData5 + Checksum Æ Æ
BC: Byte count = 7
KeyData0 … KeyData5 – state of the keyboard
IF a corresponding bit is set - the key is pressed, if a bit is cleared – he key is released.
See Keyboard Decode Table for bitmap decoding.
ST400
External Control System
Key LED Control:
Å Å STX + BC + ‘L’ + Led Data1 + Led Data2 + … + Led Data5 + Checksum
BC: Byte count = 6
Data1= LED1 (Lsb) to LED8 (Msb)
Data2=
LED9
(Lsb)
to
LED16
(Msb)
Data3= LED17 (Lsb) to LED24 (Msb)
Data4=
LED25
(Lsb)
to
LED32
(Msb)
Data5= LED33 (Lsb) to LED34 (Msb)
STX + 01 + ACK + Checksum Æ Æ
Wheel Mode:
Å Å STX + BC + ‘M’+ Wheel Divide + Min Position + Max Position +
Mode byte + Checksum
BC: Byte count = 5
Wheel Divide = 1 (highest resolution) to 96 (lowest resolution)
Min Position = The lowest number that may be returned as the wheel
position. It’s a signed value that ranges between 0 and –127.
Max Position = The highest number that may be returned as the wheel
position. It’s a signed value that ranges between 0 and +127.
Mode byte:
0= Off
1= Jog
2=
Shuttle
STX + 01 + ACK + Checksum Æ Æ
Wheel Position: (Automatically sent when movement is detected)
STX + 02 + ‘H’ + Wheel Position Byte + Checksum Æ Æ
BC:
Byte
Count
=
2
Wheel Position Byte = -16 Æ +16
Å Å No response required
T-bar Position: (Automatically sent when movement is detected)
STX + BC + ‘T’ + T-bar Position Byte + Checksum Æ Æ
BC:
Byte
Count
=
2
T-bar
Position
Byte
=
0
Æ +64
Å Å No response required