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MELSEC-
3 SPECIFICATIONS
3.7.5 Data of operating statuses (common to 2, 4 and 8 occupied stations (4 occupied
stations 2 modules): Address RWrn)
The CC-Link/LT side operating status is stored.
Bit Name Description
b0 Data link status
0: Data link stopped
1: Data link being executed
b1 Initial communication status
0: Initial communication not completed
1: Initial communication completed
b2 to b7 Empty Fixed at 0
b8 Data link failure
0: Data link normal
1: One or more faulty station in data link identified
b9 All stations failed
0: One or more normal data link station identified
1: All stations are faulty
b10 Remote I/O error
0: No remote I/O error
1: One or more faulty remote I/O station
b11 Error of station outside control range
0: No error
1: Remote station(s) set to the station number higher than the last
of refresh range
b12 Point mode setting error
0: Normal
1: Point mode switch set outside valid range
b13 Transmission speed setting error
0: Normal
1: Transmission rate setting switch set outside valid range
b14 Switching during operation
0: No switching
1: Switching identified
b15 Hardware failure
0: Normal
1: Failure identified by self-loopback test
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