Transmission Procedure - Toshiba V Series User Manual

Chapter 2 Specifications

2.2 Transmission Procedure

The CF611 transmission method is commonly used in personal computers. A general
method uses the following polling method and commonly uses CR (0DH) as the
trailing code.
Send
Receive
(1) Transmitted text
(2) Received text
・ The text up the trailing code (CR) is
received .
・ Text up to 320w can be received.
・ The received byte length is stored in
the 10W(0AH) parameters.
8
Text CR
To transmit data using the CF611, create an ASCII code text data as shown
below and write it in the transmitting area of the CF611 with an MWRITE
instruction.
・ Be sure to add a trailing code
(CR) at the end of the
transmitted text.
・ The transmitted text can be up
to 320w.
When data is received with the CF611,read the ASCII code text data as shown
below with the MREAD instruction.
Text
Text CR
S2 register
F 0
"1" "0"
"3" "2"
"5" "4"
"7" "6"
"9" "8"
NULL CR
HIGH LOW
byte byte
S2 register
F 0
"1" "0"
"3" "2"
"5" "4"
"7" "6"
"9" "8"
NULL CR
HIGH LOW
byte byte
Received bytes (N)
model 2000 CIF Module(CF611) User's Manual
CR
Transmitted text
"0"
"1"
"2"
"3"
"4"
N byte
"5"
"6"
"7"
"8"
"9"
CR
Received text
"0"
"1"
"2"
"3"
"4"
N bytes
"5"
"6"
"7"
"8"
"9"
CR