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(3)
Outline of Text
The format of communication text is shown below.
Start-of-data code (1 character)
Each block of text is detailed below.
(a)
Start-of-data code (1 character)
STX code (ASCII code $02)
(b)
Frame character (1 character)
Refer to Table 16-3.
(c)
Data field (variable)
(i)
When there is no data field (non-specific request text)
There is no data field because MOR, ANY, REP, SUS and REC are control
frames.
(ii)
When there is a data field (specific request text)
Frames other than in (i) above. The data field includes a function character.
(d)
End-of-data code (1 to 4 characters)
Any of the following five combinations is selectable on the host setting screen.
(i)
ETX + BCC (NOTE 1) ................................ . ...(ASCII code $03 + BCC)
(ii)
CR + LF + ETX................................ . ...............(ASCII code $0D + $0A + $03)
(iii)
ETX ................................ . ............................... . (ASCII code $03)
(iv)
ETX + CR + LF................................ . ...............(ASCII code $03 + $0D + $0A)
(v)
ETX + CKSH + CKSL (NOTE 2) + CR ............(ASCII code $03 + h + l + $0D)
The text length from (a) to (d) is selectable on the communication parameter screen. (256
or 512 bytes)
Transfer sequence
Data field (variable)
Frame character (1 character)
16 - 2
End-of-data code (1 to 4 characters)
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