Mitsubishi Electric A1SJ71DN91 User Manual page 43

3. SPECIFICATIONS
(11) Station Communication Status (Address 01BC
Stores whether or not I/O communication is normal for each slave station.
•
If a bit is ON, I/O communication
•
If a bit is OFF, I/O communication interrupted
The buffer memory addresses and the station number corresponding to each bit are
shown in Table 3.17.
Table 3.17 Station Number Corresponding to Each Bit in the Station
Communication Status
Buffer Memory Address
(Hexadecimal)
01BC
H
01BD
H
01BE
H
01BF
H
(12) Station Problem Status (Address 01C4
Stores whether or not a communication error has occurred for each slave station.
•
If a bit is ON, problem information exists
•
If a bit is OFF, no problem information exists
Follow the procedure below to turn OFF a bit.
(a) Read the communication error information for the station, using the buffer memory
message communication area. (For information on reading com-munication error
information, see 3.4.2 (3) Message Communication Com-mands, (4) Message
Communication Results, and (5) Message Communi-cation Data.)
(b) When Read Communication Error Information is executed, the correspond-ing bit
automatically turns OFF.
The buffer memory addresses and the station number corresponding to each bit are
shown in Table 3.18.
Table 3.18 Station Number Corresponding to Each Bit in the Station
Problem Status
Buffer Memory Address
(Hexadecimal)
01C4
H
01C5
H
01C6
H
01C7
H
to 01BF
H
Station Number Corresponding to Each Bit
Bit 15 Bit 14
Station 15 Station 14
Station 31 Station 30
Station 47 Station 46
Station 63 Station 62
to 01C7 /452 to 455)
H H
Station Number Corresponding to Each Bit
Bit 15 Bit 14
Station 15 Station 14
Station 31 Station 30
Station 47 Station 46
Station 63 Station 62
−
3 21
MELSEC-A
/444 to 447)
H
... Bit 1 Bit 0
... Station 1 Station 0
... Station 17 Station 16
... Station 33 Station 32
... Station 49 Station 48
... Bit 1 Bit 0
... Station 1 Station 0
... Station 17 Station 16
... Station 33 Station 32
... Station 49 Station 48