TOHO ELECTRONICS TTM000 - Manual (Page 9)

9
3.3 Composition of a request message
(transmitted from a high-level computer to this product)
For codes ① to ⑩, see "3.5 Description of codes."
For specific examples of request messages, see "4.1 Examples of communications to be read"
and "4.2 Examples of communications to be written."
3.3.1 Composition of a read request message
Ｓ
Ｔ
Ｘ
□ □ Ｒ
Ｂ
Ｃ
Ｃ
□ □ □
Ｅ
Ｔ
Ｘ
①
S
ta
rt
co
de
②
A
dd
re
ss
③
C
on
te
nt
s o
f t
he
｜ ④
Id
en
tifi
er
｜ ⑥
E
nd
c
od
e
⑦
B
C
C
d
at
a
re
qu
es
t:
re
ad
/w
rit
e
3.3.2 Composition of a write request message
Ｓ
Ｔ
Ｘ
□ □ Ｗ
Ｂ
Ｃ
Ｃ
□ □ □
Ｅ
Ｔ
Ｘ
①
S
ta
rt
co
de
②
A
dd
re
ss
③
C
on
te
nt
s o
f t
he
｜ ④
Id
en
tifi
er
｜ ⑥
E
nd
c
od
e
⑦
B
C
C
d
at
a
□ □ □ □ □
｜ ｜ ⑤
N
um
er
ic
al
da
ta
｜ ｜
re
qu
es
t:
re
ad
/w
rit
e
3.3.3 Composition of a store request message
Ｓ
Ｔ
Ｘ
□ □ Ｗ
Ｂ
Ｃ
Ｃ
Ｓ Ｔ Ｒ
Ｅ
Ｔ
Ｘ
①
S
ta
rt
co
de
②
A
dd
re
ss
③
C
on
te
nt
s o
f t
he
｜ ④
Id
en
tifi
er
｜ ⑥
E
nd
c
od
e
⑦
B
C
C
d
at
a
re
qu
es
t:
re
ad
/w
rit
e