3
1
Specifications
1.1
RS-232C Specifications
Transmission Method
Communication method: Full duplex
Synchronous method: Start-stop synchronization
Transmission Speed
9600 bps
,
19200 bps
,
38400 bps
,
57600 bps
Data Bits
8 bits
Parity
None
Stop bit
1 bits
Message terminator (delimiter)
CR+LF
,
CR
Flow control
Software (XON/XOFF control)
“Handshake (About Buffer Flow Control)” (p. 3)
Electrical
Specifications
Input voltage level
5 to 15 V
ON
-15 to -5 V
OFF
Output voltage level
5 to 9 V
ON
-9 to -5 V
OFF
Handshake (About Buffer Flow Control)
Control during Receiving
Input Buffer
Usage
Amount
85%
75%
25%
Buffer Space
Send XON
Send XOFF
XON/XOFF control:
•
When the data in the receive buffer exceeds 75% of the
buffer
,
XOFF(13H) is sent
and the controller is notified
that there is not much space remaining in the buffer.
•
Processing of the data in the buffer continues
,
and then
XON(11H) is sent
and the controller is notified that there
is sufficient remaining space in the buffer when the
amount of data becomes less than 25%.
Control during Sending
XON/XOFF control:
•
When XOFF is received
,
the sending of data is halted. When XON is received
,
the sending of data is
resumed.
1
Specifications
1
Summary of Contents for IM7580A-1
Page 3: ...Contents ii ...
Page 5: ...2 Safety Information ...
