Omron CS1W-ETN21 operation manual RECV098

Communicating between OMRON PLCs Section 6-6

RECV(098)

(@)RECV(98)

S

D

C

With the RECV(098) instruction, the data in m number of words, starting from the beginning word S at the remote node (node address M) is received at the words starting from the beginning word D at the local node.

	Local node		Remote node number N
15		0	15	0
D→			S→
m			Number
			of words
			(m)

S:Remote node beginning word

D:Local beginning word

C:First word of control data (below)

15	0		15		10	8 7	3	0
C		C+3		0			0

Number of reception words (m) 0001 to 03DE (Hex): 1 to 990 words

	15	11	8 7	0
C+1	0		0

			Destination network number
			00 (Hex):		Local network
			01 to 7F (Hex):		1 to 127
15	11	8 7		0
C+2					C+ 4

Number of retries

0 to F (Hex): 0 to 15 retries

Communications port number: 0 to 7

Response

0:Required.

1:Not required.

Destination Unit address		Response monitor time
		0000 (Hex): 2 s
00 (Hex):	CPU Unit
		0001 to FFFF (Hex): 0.1 to 6,553.5 s
10 to 1F: (Hex):	Unit #0 to #15
E1 (Hex):	Inner Board	(in units of 0.1 s)
FE (Hex):	Unit connected to network

Remote node number M (send source)

00 to FE (Hex): 0 to 254

The range of node addresses is different for networks other than Ethernet.

Note The message services function does not guarantee that a message will reach the destination node. A message may be lost during transmission due to fac- tors such as noise. In order to prevent this from occurring when using mes- sage services, it is common to set up retry processing at the node from which instructions are issued. With the SEND(090), RECV(098), and CMND(490) instructions, retry processing is executed automatically by specifying the num- ber of retries, so specify a number other than 0.

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