3.
C
ommunication Data Format
(
a
)C
ontrol message
№
1
2
3
4
5
:
:
X
X+1
* Check Sum: The total from №1 to №X
,
when value exceeds 255
,
1b
y
te of data is confirmed the bottom.
* When sendin
g
controls in se
q
uence
,
kee
p
interval of more than 500ms between the commands.
* When sendin
g
an en
q
uir
y
ri
g
ht after sendin
g
the control of a same command
,
also kee
p
interval of more than
5
between the commands.
(
b
)
Enquiry message
№
1
2
3
4
5
6
* Check Sum: The total from №1 to №5
,
when value exceeds 255
,
1b
y
te of data is confirmed the bottom.
(
c
)
Answer message
(
1
)
Control answer
№
1
2
3
* 0x00: Com
p
leted Normal response.
0x01: Limit Ove
r
The packet was received normally, but the data value was over the upper limit.
Forcedly the monitor adjusted the data to maximum value.
0x02: Limit Unde
r
The packet was received normally, but the data value was under the lower limit.
Forcedly the monitor adjusted the data to minimum value.
0x03: Command Canceled The packet was received normally, but the command was cancelled because th
e
f
unction was not in adjustable mode, such as "--" a
f
unction displayed as in user
menu.
* Check Sum: The total from №1 to №2
,
when value exceeds 255
,
1b
y
te of data is confirmed the bottom.
(
2
)
En
q
uir
y
answer
(
Com
p
lete
)
№
1
2
3
4
:
:
X
X+1
* 0x00: Com
p
leted Normal response.
* Return Data returns the read value.
* Check Sum: The total from №1 to №X
,
when value exceeds 255
,
1b
y
te of data is confirmed the bottom.
Return DataX
Check Sum
0xX
X
0xX
X
:0xX
X
:0xX
X
Return Data Size 0xX
X
Return Data1 0xX
X
Header 0x70: Answe
r
A
nswer 0x00: Completed
Check Sum 0xX
X
Item Value
0x02: Limit Unde
r
0x03: Command Canceled
Item Value
0x01: Limit Ove
r
Item
Function
A
nswer*
0x70: Answe
r
0x00: Completed
0x8C: Control
Cate
g
or
y
0xX
X
Function
Header
DataX
Header
Data1（Len
g
th）
Data2（Data1）
Check Sum
:
:
Check Sum
0xX
X
0xX
X
0xX
X
0xX
X
0xX
X
0xX
X
0xX
X
Value
Header 0x83: Enquir
y
Cate
g
or
y
0xX
X
0xX
X
Data1 0xFF
Data2
0xX
X
0xFF
Item Value