Mitsubishi Electric QJ71GF11-T2, Руководство пользователя

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APPENDICES
A
Appendix
9
Com
parison of
CC-Link
and
CC-Link
IE
F
ield Net
w
ork
(b) Modified functions
The following are the functions modified in the master/local module (QJ71GF11-T2).
Function Notes during replacement
Slave station cut-off function
When CC-Link IE Field Network is connected in line topology, stations after the disconnected
station become data link error stations. To prevent disconnection of normal stations, connect
CC-Link IE Field Network in a star topology.
( Page 49, Section 5.2.1 (1))
Standby master function
Use the submaster function for a master/local module (QJ71GF11-T2).
( Page 178, Section 8.7)
The submaster function differs from the standby master function in the following points.
• Even if the control is shifted to the submaster station due to disconnection of the master
station, the sending ranges (the number of assignment points) for communications with the
slave stations are the same as that of the master station; therefore, it is not required to
switch programs between the master station and the submaster station. (With the
QJ61BT11N, the number of assignment points differs.)
• A send area for the master station allows information to be exchanged between the master
station and the submaster station.
• The forced master switch can be performed while the submaster station is operating as a
master operating station.
Data link status setting if the CPU module
on the master station is faulty
This setting is fixed to "Continue" for CC-Link IE Field Network.