Mitsubishi MELSEC-A Series Reference Manual page 262

9. PROGRAMMING
Device
Name
Number
D9212
D9213
Local station
operating status
D9214
D9215
D9216
D9217
Local station error
detection status
D9218
D9219
Table 9.5 List of MELSECNET special link registers (Continued)
Data
Stores the status of
No.1 to No.16
Stores the status of
No.17 to No.32
Stores the status of
No.33 to No.48
Stores the status of
No.49 to No.64
Stores the status of
No.1 to No.16
Stores the status of
No.17 to No.32
Stores the status of
No.33 to No.48
Stores the status of
No.49 to No.64
• Stores the station No. of STOP- or PAUSE-status local station(s) as shown
below.
• If a local station goes down, data before the failure will be held. When
contents of D9224 to D9227 and D9228 to D9231 are ORed and the
relevant bit is "0", the corresponding bit in the above special registers is
enabled.
• Even If the host station (master station) goes down, the data before the
failure will be also held.
• When the status of a local station changes to STOP or PAUSE, the
corresponding bit is "1".The bit status of remote I/O station always remains
"0", indicating RUN.
Example:When the operation status of No. 7 changes to the STOP, "1" is set
to bit 6 of D9212. When D9212 is monitored, its value is "64 (40
• Stores the numbers of the station that detect the occurrence of an error at
another station.
• If a local station goes down, data before the failure will be held. When
contents of D9224 to D9227 and D9228 to D9231 are ORed and the
relevant bit is "0", the corresponding bit in the above special registers is
enabled.
• Even If the host station (master station) goes down, the data before the
failure will be also held.
• When a normally operating local station detects an error at another local
station, the bit corresponding to the normally operating station is set to "1".
The bit status of remote I/O station always remains "0".
Example:When No. 5 detects that No. 4 is faulty, "1" is set to bit 4 of D9216.
When D9216 is monitored, its value is "16 (10
• When the faulty station recovers normal operating status or when the loop
line is switched so that the data link returns to normal operating status, the
corresponding bit is automatically reset to "0".
9 - 16
Description
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