Filter
Top Products
6 - 27 6 - 27
MELSEC-Q
6 PROGRAMMING
(b) Checking data link status of the host
1) Link scan time etc., can be checked in SW005A to SW005B and
SW006B to SW006D.
2) If an error occurs to data link, either of the following link special relays
(SB) will be turned ON.
• Baton pass status (host) (SB0047)
• Host data link status (SB0049)
3) The cause of an error is stored in the following link special registers
(SW).
• Baton pass status (host) (SW0047)
• Cause of baton pass interruption (SW0048)
• Cause of data link stop (SW0049)
No. Description No. Description
SB0047 Baton pass status (host) SW0047 Baton pass status (host)
— SW0048 Cause of baton pass interruption
SB0049 Host data link status SW0049 Cause of data link stop
—
SW005A Maximum baton pass station
SW005B Maximum cyclic transmission station
SW006B Maximum link scan time
SW006C Minimum link scan time
SW006D Current link scan time