User's Manual

Page 85
BST Read Buffer Status
Syntax
BST{Local Station Address}
Local Station Address : local station address for 485 mode (000 to 239).
Response
xxxxxxxx : current status (x : 0 or 1)
N0 : command error (Except 485 mode)
Fu
1 data in buffer
1 buffer full
0 no overflow
1 buffer overflow
0
reserved
0 buffer empty
1 data in buffer
0 buffer available
1 buffer full
0 enabled
1 disabled
0
reserved
Buffer Status
fer
transmit buffer
transmit buffer
receive buffer
receive buffer
receive data output
nction
Reads buffers status of the modem. (Represented with an 8-bit binary number.)
bit 7 bit 6 bit 2 bit 1 bit 05 bit 4 bit 3 bit
0 buffer empty
transmit buf
0 buffer avalable
Figure 5–1: Buffer Status Bit Description
Example
>@BST CR/LF : read the buffer status register
<00000001 CR/LF : transmit buffer contains data
Futaba Corporation Rev. 050415-01.1