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MELSEC-Q
17 COMMUNICATIONS BETWEEN THE MULTIPLE PLC SYSTEM'S I/O
MODULES AND INTELLIGENT FUNCTION MODULES
(2) Loading output (Y)
The "Out of group input/output settings" setting in the PLC parameter's multiple
PLC settings determines whether output can be loaded from output modules and
intelligent function modules being controlled by other PLCs.
Out of group input/output settings
The input condition outside the group is taken:
The output condition outside the group is taken:
(a) When "Load output condition outside of group" has been set
1) Loads to the host PLC's output (Y) the ON/OFF data that is output to
the output and intelligent function modules by the other PLCs by
performing output refresh before a sequence program calculation
starts.
2) Output (Y) loading is performed for the modules mounted onto the
following additional base unit slots.
I/O allocation type Mounted module Remarks
Output module —
None
Intelligent function module —
Input module —
Output
Output module —
Intelli. Intelligent function module —
3) It is possible to load output ON/OFF data being controlled by other
PLCs with direct access output.
4) Remote station output, such as empty slots, MELSECNET/H and CC-
Link, cannot be loaded.
Use automatic refresh of CPU shared memory and send the ON/OFF
output data for remote stations to use the ON/OFF output data for
MELSECNET/H, CC-Link and other remote stations in other PLCs.
(b) When "Do not load output condition outside of group" has been set
It is not possible to load ON/OFF data output to output modules and
intelligent function modules by other PLCs into the host PLC's output (Y)
(remains at OFF.)
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