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MELSEC-Q
2 SYSTEM CONFIGURATION AND AVAILABLE FUNCTIONS
2.3 For Use in Multiple CPU System
This section explains the use of the Q series C24 in a multiple CPU system.
(1) When making access from the external device to the non-control CPU of the Q
series C24 using either of the following functions, use the Q series C24 of function
version B.
When the Q series C24 of function version A is used, only the control CPU can be
accessed. (Access to the non-control CPU will result in an error.)
• Communication using MC protocol
• Communication using GX Developer
Communication using GX Develope
Communication using MC protocol
External device
Q series C24 of function version B
Multiple CPU system
(2) If the other stations to be accessed belong to the multiple CPU system, the
modules used for routing and QCPUs at the local station, all the relay stations,
and the accessed station should be modules of function version B or later. This
has to hold in all cases of accessing the non-control CPU of the module used for
routing and the accessed station.
1
(Example)
1 When accessing other stations, a module used for routing can access the
following modules:
• CC-Link IE Controller Network, CC-Link IE Field Network, MELSECNET/H,
MELSECNET/10 network modules
• Q series C24
• Ethernet interface modules
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