Omron CS1W-ETN01 Operation Manuals page 78

Sending Commands From a PC
Using SEND(090), RECV(098), and CMND(490)
SEND(090)
S: Local node beginning word
D: Destination beginning word
C: First word of control data (below)
66
Make the settings shown below when using the SEND(090), RECV(098), and
CMND(490) instructions in the user's ladder-diagram program in the PC.
The SEND(090) instruction sends the data in n number of words, starting from
the beginning word S at the local node, to the words starting from the beginning
word D at the remote destination node (node number N).
Number of words (n)
0001 to 03DE (Hex): 1 to 990 words
Destination network number
00 (Hex): Local network
01 to 7F (Hex): 1 to 127
Destination unit address
00 (Hex):
10 to 1F: (Hex): Unit #0 to #15
E1 (Hex):
FE (Hex):
Destination node number N
00 to 7E (Hex); 0 to 126
The same data can be broadcast to all nodes on the network by
setting the destination node number to FF (Hex).
The range of node addresses is different for networks other than Ethernet.
Note The message service does not guarantee that a message will reach the destina-
tion node. A message may be lost during transmission due to factors such as
noise. To prevent this from occurring when using message services, it is com-
mon to set up retry processing at the node from which instructions are issued.
With the SEND(090), RECV(098), and CMND(490) instructions, retry process-
ing is executed automatically by specifying the number of retries, so specify a
number other than 0.
Local node
Number
of words
(n)
Communications port number: 0 to 7
Response
0: Required.
1: Not required.
Response monitor time
0000 (Hex): 2 s
CPU Unit
0001 to FFFF (Hex): 0.1 to 6,553.5 s (in
units of 1 s)
Unit connected to network
Unit connected to network
Section 5-3
Destination node number N
Number of retries
0 to F (Hex): 0 to 15 retries