Mitsubishi Electric Q Series Reference Manual page 24

1 OVERVIEW
Network module
QCPU
Send
J.SEND
1 - 7
(3) Providing various communication services
(a) Transient transmission can be performed by designating a channel number
(1 to 64) of the receiving station. This function allows to set (change) the
channel numbers arbitrarily with the sequence programs and to perform
transmission to multiple stations with the same channel number at one
time.
(Refer to Section 7.4.4, "Message Sending Function Using the Logical
Channel Numbers.")
Receiver
channel
unmatched
Discard
Sender
Discard
Receiver
channel
unmatched
(b) By using the low-speed cyclic transmission function, it is possible to
cyclically send data that does not require high-speed transmission in a
batch mode, separately from the normal cyclic transmission (LB/LW). High-
speed transmission can be achieved by efficiently dividing the data to
transmit into data that requires high-speed transmission, which is sent by
the normal cyclic transmission, and other data that is sent by low-speed
cyclic transmission.
There are three types of transmission method depending on how the
transmission is activated.
1) "Transmission of data for one station in one link scan" (default)
2) "Periodical cycle interval" which transmits in a set time cycle (h/min/s)
3) "System times" which transmits at the designated time
(year/month/day/h/min/s)
(High Performance model QCPU, Process CPU, Redundant CPU,
and Universal model QCPU)
(Refer to Section 7.3, "Low-Speed Cyclic Transmission Function.")
Low-speed cyclic
transmission data
Receiver
channel
No. 9
MELSECNET/H
Received
Received
Receiver
Received
channel
No. 9
Receiver
channel
No. 9
MELSEC-Q
QCPU Network module
Channel 1
2
Channel
3
No.1
Receive
7
No.2
J.RECV
8
No.3
Channel
No.9
No.20
MELSECNET/H
1 - 7