Mitsubishi QJ71MB91, Руководство пользователя

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4
MODBUS(R) STANDARD FUNCTIONS
4.11 Diagnostics (FC: 08)
4.11.3 Return diagnostic register (sub-function code: 02)
4
- 28
1
O
VER
VIE
W
2
SYS
T
E
M
CO
NF
IG
U
R
A
T
IO
N
3
S
P
E
CIFICA
TI
ONS
4
MODB
US
(R)
S
TA
NDA
RD
FUN
C
TIO
N
S
5
FUNC
TI
ON
6
PR
E
-O
PER
A
T
ION
AL
P
R
OCED
URE
S A
ND
SE
TTINGS
7
P
A
RA
MET
E
R S
E
TTI
N
G
8
UTIL
ITY P
A
CK
AGE
(G
X Co
nf
ig
u
rat
o
r-M
B)
4.11.3 Return diagnostic register (sub-function code: 02)
Reads out the detailed LED status of the QJ71MB91 to the master.
(1) Request message format (Master Slave)
(2) Response message format (Slave Master)
(When completed normally)
Remark
Refer to the following for each items of the detailed LED status.
Section 11.2
Figure 4.32 Return diagnostic register (Request message)
Figure 4.33 Return diagnostic register (Normal response message)
(L)
Data
(L)
Function code
Function
code
(08
H
)
Sub-function code
Sub-function code
(0002
H
)
(0000
H
)
(H) (H)
(L)
Data
(L)
b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12 b13 b14 b15
Unused (Fixed to 0)
0 0 0 1/0 1/0 1/0 1/0 1/0 0 0 0 1/0 1/0 1/0 1/0 1/0
Function code
Function
code
(08
H
)
Sub-function code
Sub-function code
(0002
H
)
Diagnostic register
value
CH1 C/N
CH1 P/S
CH1 PRO.
CH1 SIO
CH1 ERR.
CH1 side Detailed
LED status
(0: OFF, 1: ON)
CH2 C/N
CH2 P/S
CH2 PRO.
CH2 SIO
CH2 ERR.
CH2 side Detailed
LED status
(0: OFF, 1: ON)
Unused (Fixed to 0)
The QJ71MB91 stores the lower 8 bits of the buffer memory's
Detailed LED status as a diagnostic register. (address: 0006
H
/0007
H
)
(H)
(H)