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MELSEC-Q
3 SPECIFICATIONS
2) Identifier related trouble information
For module type slave stations, this stores as bit information whether or
not a module is outputting an error. The identifier related trouble
information can be divided into header and trouble information. This
area stores a 2 bit value that is the identifier related trouble information
in the header, including the header (1 byte), and the device related
trouble information for this area.
(2nd byte)
(4th byte)
(3rd byte)
Header
(1st byte)
Bit position
MSB
LSB
7
6
5
4
3
2
1
0
Header:
(End of device area)
Identifier area length 2 to 63 in byte units
Bits 6 and 7 are set as 01.
Buffer memory
When this bit is 1, the 0th module has an error.
When this bit is 1, the 7th module has an error.
2nd byte
3rd byte
Bit position:
MSB
LSB
7
6
5
4
3
2
1
0
15
14
13
12
11
10
9
8
