Omron CJ1W-FLN22, Руководство по эксплуатации, Страница: 121 / 277

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Sending Commands from a PLC Section 7-2
Note 1. Data cannot be written to words A000 to A447 in the Auxiliary Area.
2. A maximum of 13 banks in the EM Area can be used. For details regarding
the EM Area, refer to the operation manual for the PLC that is used.
Using SEND(090), RECV(098), and CMND(490)
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 CPU
Unit.
SEND(090) 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 begin-
ning word D at the remote destination node (node number N).
Note The message service does not guarantee that a message will reach the desti-
nation 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
common to set up retry processing at the node from which instructions are
sent. With the SEND(090), RECV(098), and CMND(490) instructions, retry
processing is executed automatically by specifying the number of retries, so
specify a number other than 0.
Auxiliary Area A000 to A959 (See note 1.)
Timer Area TIM0000 to 4095
Counter Area CNT0000 to 4095
DM Area D00000 to D32767
EM Area E00000 to E32767 (See note 2.)
Area Range
S: Local node beginning word
D: Destination beginning word
C: First word of control data (below)
Local node
Number
of words
(n)
Destination node number N
Number of words (n)
0001 to 03DE (Hex): 1 to 512 words
Destination network number
00 (Hex): Local network
01 to 7F (Hex): 1 to 127
Destination unit address
00 (Hex): CPU Unit
10 to 1F: (Hex): Unit #0 to #15
E1 (Hex):
Unit connected to network
FE (Hex): Unit connected to network
Destination node number N
00 to FE (Hex); 0 to 254
The range of node addresses is different for networks other than Ethernet.
Number of retries
0 to F (Hex): 0 to 15 retries
Communications port number: 0 to 7
Response
0: Required.
1: Not required.
Response monitor time
0000 (Hex): 2 s
0001 to FFFF (Hex): 0.1 to 6,553.5 s (in
units of 1 s)
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