BBV FBM - Page 48

48
GUI Interface
General Data Comms
Default Baud rate: 9600
Data bits: 8 bit
Parity: None
Stop bit: 1
Default 4 wire (RS422)
Actual address for keypads is 0XA0 PLUS (Keypad Number -1).
MSB set denotes address byte. Cleared if byte is data.
Checksum calculated from:
Address Byte + Byte 1 + Byte N
MSB of checksum is then cleared
after value calculated.
Keypad Address
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF
Key Press Code
(e.g. 0x10)
Checksum = ((Address + Keycode) & 0x7f))
0x10 0x11 0x170x12 0x180x13 0x190x14 0x1a0x15 0x1b
LD8 LD1LD2LD3LD10
0x1c 0x1d 0x1e 0x1f 0x20 0x21
LD7
0x22 0x23 0x24 0x25 0x26 0x27
LD6
0x28
0x29 when pressed
AND
0x2e when held pressed
0x2a 0x2b 0x2c 0x2d
LD5LD4LD12LD11
0x16 when pressed
AND
0x2f when held pressed
Tx1500 Keyboard - Key Press Codes