Omron CS1G/H-CPUxxH Instructions Manual page 903

Network Instructions
Description
Transmission through the
Network
882
Area
Index Registers
Indirect addressing
using Index Registers
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
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 transmis-
sion.
If a response is requested (bits 12 to 15 of C+3 set to 0) but a response hasn't
been received within the response monitoring time, the data will be retrans-
mitted 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 des-
tination 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.
If the Communications Port Enabled Flag is ON for the communications port
specified in C+3 when SEND(090) is executed, the corresponding Communi-
cations Port Enabled Flag (ports 00 to 07: A20200 to A20207) and Communi-
cations Port Error Flag (ports 00 to 07: A21900 to A21907) 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.
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.
S
---
,IR0 to ,IR15
–2048 to +2047, IR0 to –2048 to +2047, IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Destination node
Number
of words
to trans-
mit, n
Network
Data
Section 3-25
D C