Mitsubishi MELSEC QS Series, User Manual

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9
DEVICE EXPLANATION
9.2 Internal User Devices
9.2.6 Link relay (B)
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9.2.6 Link relay (B)
(1) Definition
Link relay is a CPU module side relay used when refreshing the link relay (LB) data of
the CC-Link IE controller network module or MELSECNET/H module to the CPU
module, or when refreshing the CPU module data to the link relays (LB) of the CC-
Link IE controller network module or MELSECNET/H module.
(2) Number of used N/O and N/C contacts
There are no restrictions on the number of contacts (N/O contacts, N/C contacts) used
in the program.
Diagram 9.15 Link refresh
Diagram 9.16 Link Relay
Link relay Link relay
B0 LB0
CPU module
CC-Link IE controller
network module
Link refresh
setting range
Link refresh
X100
B0
T0
Y100
X102 B0
B100
X104 B0
B1FFF
SET B0
K20
No restrictions on the quantity used.
B0 switches ON at X100 OFF to ON.
The link relay (B0) ON can only be used for
internal CPU module processing, and cannot be
output externally.
B0 ON/OFF information is output from the CC-Link
Safety remote I/O unit to an external destination.