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6 - 12
MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6
6 - 12
(b) Communication using ASCII code
(Example)
(5) End codes
For more details on the end codes added to a response when communicating
using fixed buffers, see Subsection 11.4.1.
End codes are stored in the communication status storage area of the buffer
memory.
36
H
Maximum of 1016 words
Subheader
(H) (L)
Data length
setting
1 word (2 bytes)
Send/
receive
data
(Maximum of
508 words)
Data designation/
storage device
for sending/
receiving instructions
Command format
n+1
n+2
n + data length
setting
30
H
30
H
30
H
(H) to (L) (H) to (L) (H) to (L) (H) to (L)
ASCII-BIN conversion
n
(H) (L)
(H) (L)
Data length
n+1
n+2
Subheader
34
H
12
H
78
H
56
H
(H)
to
(L) (H) (L)
to
36
H
30
H
30
H
30
H
30
H
30
H
32
H
31
H
32
H
33
H
34
H
35
H
37
H
38
H
36
H
30
H