Mitsubishi Electric QJ71DN91 User Manual page 55

3 SPECIFICATIONS
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(3) Node Communication Error Status (address: 1C0
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
• 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
(Hex.)
01C0
H
01C1
H
01C2
H
01C3
H
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
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
(Hex.)
01C4
H
01C5
H
01C6
H
01C7
H
to 01CF
H
Node No. corresponding to each bit
Bit 15 Bit 14
Node 15 Node 14
Node 31 Node 30
Node 47 Node 46
Node 63 Node 62
to 01C7
H
Node No. corresponding to each bit
Bit 15 Bit 14
Node 15 Node 14
Node 31 Node 30
Node 47 Node 46
Node 63 Node 62
MELSEC-Q
to 1C3 /448 to
H H
).
H
...
Bit 1 Bit 0
...
Node 1 Node 0
...
Node 17 Node 16
...
Node 33 Node 32
...
Node 49 Node 48
/452 to 455)
H
...
Bit 1 Bit 0
...
Node 1 Node 0
...
Node 17 Node 16
...
Node 33 Node 32
...
Node 49 Node 48
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