Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 919

3. Instructions
Function
SEND(090) transfers the data beginning at word S to addresses beginning at D in the designated
device through the PLC's CPU Bus or over a network. The number of words to be transmitted is
specified in C.
Local node
Number
of words
to trans-
mission
• If the Communications Port Enabled Flag is ON for the communications port specified in C+3 when
SEND(090) is executed, the corresponding Communications Port Enabled Flag (ports 00 to 07:
A202.00 to A202.07) and Communications Port Error Flag (ports 00 to 07: A219.00 to A219.07) will
be turned OFF and 0000 will be written to the word that contains the completion code (ports 00 to 07:
A203 to A210). Data will be transmitted to the destination node once the flags have be set.
• When an address in the current bank of the EM Area is specified for D, the transmitted data will be
written to the current EM bank of the destination node.
• When data will be transmitted outside of the local network, the user must register routing tables in the
PLCs (CPU Units) in each network. (Routing tables indicate the routes to other networks in which
destination nodes are connected.)
• If the destination node number is set to FF, the data will be broadcast to all of the nodes in the
designated network. This is known as a broadcast transmission.
• If a response is requested (bits 12 to 15 of C+3 set to 0) but a response has not been received within
the response monitoring time, the data will be retransmitted up to 15 times (retries set in bits 0 to 3 of
C+3).
• There will be no response or retries for broadcast transmissions.
• SEND(090) can be used to transmit data to a particular serial port in the destination device as well as
the device itself.
Data can be transmitted to a host computer connected to the PLC's serial port (when set to host link
mode) as well as a PLC or computer connected through a Controller Link or Ethernet network.
Transmission through the Network
SEND(090) can be used to transmit data from the
PLC to the specified data area in a PLC or computer
connected by a Controller Link network or Ethernet
link.
Transmission through Host Link
When the CPU Unit's built-in serial port, a Serial
Communications Board (CS-series only), or Serial
Communications Unit is in host link mode and
connected one-to-one
SEND(090) can be executed to transmit data from
the PLC to the host computer the next time that the
PLC has the right to transmit. It is also possible to
transmit to other host computers connected to other
PLCs elsewhere in the network.
882
Destination node
with a host computer,
Network
Data
Host computer
Host Link
Data
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Serial port