Sending Messages By Using Logical Channel Numbers - Mitsubishi Electric MELSEC iQ-R Series User Manual

Sending messages by using logical channel numbers

This function is used to receive only the messages selected on the receiving station when they have a lot of information types.
The sending station performs transient transmission by using the destination logical channel without specifying a specific
station number (the number can be specified). After the sent message is received at all other stations in one network, only the
messages whose logical channel number matches the one specified for the receiving side are left, and other messages are
deleted at the receiving station.
Ex.
When messages are sent from system D to logical channel 9, only systems A and C whose logical channel is set to 9 can
receive messages.
System B does not receive messages because logical channel 9 is not set.
RCPU RJ71LP21-25
Channel 1
Receiving
Receive command
side
Logical
J.RECV
channel 15
Channel 14
Device memory
Power RCPU RJ71
supply LP21
module -25
System A
1 FUNCTIONS
38
1.2 Transient Transmission Function
RCPU
Receive command
J.RECV
Device memory
2
3
8
Channel 12
Power
Channel 10
supply
Channel 9
module
System B
RCPU RJ71
Power
supply
module
System D
RCPU
Data creation
command
Send
message
data creation
Send command
J.SEND
Device memory
Send message
data
RJ71LP21-25
Channel 1
2
Receiving
side
3
Logical
channel 15
8
Channel 14
Channel 12
Channel 10
Channel 13
RCPU RJ71
LP21
-25
Power RCPU RJ71
supply
module
System C
LP21
-25
RJ71LP21-25
Channel 1
Receiving
2
side
3
Logical
channel 1
8
Channel 9
Channel 10
Channel 12
Channel 15
RCPU RJ71LP21-25
Channel 1
Receiving 2
Receive command
side
3
Logical
J.RECV
channel 15
Channel 14
Channel 12
Channel 16
Device memory
Channel 9
LP21
-25
8