Mitsubishi Electric MELSEC Q Series Reference Manual page 532

(d) Present Control and Assign Control
Present Control: Displayed to the station actually operating as control station.
Assign Control: Displayed to the station set by network parameters.
● When multiple stations on the same system have the same network No.
If a station other than those on the system is selected while a station of the lowest start I/O No. has a baton pass error, a
transient execution error (no baton passing on the own station) (E504
Resolve the baton pass error, and then redo the operation.
(3) Display position of a disconnected station
There are two cases for positioning a disconnected station on the window.
(a) When normal connection information has been obtained
The disconnected station (station No.4) is displayed in the position where it was connected when normal.
(b) When normal connection information has not been obtained
The disconnected station (station No.4) is displayed on the IN side of the programming tool connected station.
*1 The normal connection information is network configuration data that the CC-Link IE Controller Network module on the
programming tool connected station stores in its memory when all stations are normal. When all of the following
conditions are met, the normal connection information can be obtained. Also, after any of the conditions became
unsatisfied, if all of them are met again, the normal connection information will be updated.
• All stations are in data link status (Cyclic transmission status of each station (SB00B0) is OFF.)
• No loopback station (Loopback status (SB0065) is OFF.)
• No station has a parameter error. (Parameter status of each station (SB00E0) is OFF.)
• The number of actually connected stations is the same as the total of stations that is set for the control station (except
reserved stations).
*2 For obtaining the normal connection information, there are restrictions on the version of the CC-Link IE Controller
Network module on the programming tool connected station. Check the serial No. and software version for applicability.
( Page 606, Appendix 3)
Remark
If station No. of a disconnected station (No.4) is set to an invalid value (station No.9) by mistake after acquisition of the
normal connection information, the icon of the station will be displayed on the IN side of the programming tool connected
station.
530
) will occur.
H
*1*2