3 - 25 3 - 25
MELSEC-Q
3 SPECIFICATIONS
(b) Buffer memory 2097 (831
H
)
Only bit 7 is valid. Other bit is fixed in 0. Bit 7 is turned on when the slave
sends expansion trouble information that is 27 bytes or more.
Bit position
MSB
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
LSB
0 fixed
0 fixed
(c) Buffer memory 2098 to 2110 (832
H
to 83E
H
)
The following informations are stored in this area:
Device related trouble information
This area stores the slave station inherent self-diagnostic information that
is not set by the PROFIBUS-DP standards.
Identifier related trouble information
For module type slave stations, whether or not a module error has
occurred is stored as bit information.
Channel related trouble information
For module type slave station, this stores the, error information of all
modules outputting an error.
1) Device Related trouble information
This stores the slave module inherent trouble information that is not set
by the PROFIBUS-DP standards. The device related trouble can be
divided by header and trouble information. This area stores a 2 bit
value that is the device related trouble information in the header,
including the header (1 byte), and the device related trouble information
for this area.
2098 (832
H
)
2099 (833
H
)
(2nd byte)
(4th byte)
(3rd byte)
Header
(1st byte)
Bit position
MSB
LSB
7
6
5
4
3
2
1
0
Device area length 2 to 63 in byte units
Bits 6 and 7 are set to 00.
Header:
Buffer memory
address demical
(Hexadecimal)
