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MELSEC-Q
3 SPECIFICATIONS
(3) Node Communication Error Status (address: 1C0
H
to 1C3
H
/448 to
451)
The I/O communication error status of each slave node is stored.
While I/O Communicating (X01) is off, all bits are off.
Note that no error is detected for the node whose corresponding bit is on in
Failed Node Detection Setting (address: 01CC
H
to 01CF
H
).
• When the corresponding bit is on: Communication error exists.
• When the corresponding bit is off: No communication error
Table 3.21 Node No. corresponding to each bit in Node Communication Error Status
Buffer memory address
Node No. corresponding to each bit
(Hex.)
Bit 15
Bit 14
Bit 1
Bit 0
01C0
H
Node 15
Node 14
Node 1
Node 0
01C1
H
Node 31
Node 30
Node 17
Node 16
01C2
H
Node 47
Node 46
Node 33
Node 32
01C3
H
Node 63
Node 62
Node 49
Node 48
POINT
When any of the bits in this area turns on, Slave Down Signal (X04) is set to on.
(4) Node Fault Status (address: 01C4
H
to 01C7
H
/452 to 455)
The communication fault status of each slave node is stored.
• When the corresponding bit is on: Fault information exists
• When the corresponding bit is off: No fault information
Reading communication error information of the node in message
communication will turn off the corresponding bit. (Refer to Section 4.2 (3).)
Table 3.22 Node No. corresponding to each bit in Node Fault Status
Buffer memory address
Node No. corresponding to each bit
(Hex.)
Bit 15
Bit 14
Bit 1
Bit 0
01C4
H
Node 15
Node 14
Node 1
Node 0
01C5
H
Node 31
Node 30
Node 17
Node 16
01C6
H
Node 47
Node 46
Node 33
Node 32
01C7
H
Node 63
Node 62
Node 49
Node 48
Содержание QJ71DN91
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