Omron CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1, C200HW-CLK21, CQM1H-CLK21 CQM1H-series PLCs

Introduction	Section 6-1
CQM1H-series PLCs
SEND	SEND transmits “n” words beginning with S (the beginning word for data
	transmission at the source node) to “n” words beginning with D (the beginning
	word for data reception at the destination node, N.)

@SEND(90)

S

D

C

			Source node		Destination node N
		15	0				0
					15
S: Source node beginning send word		S	…	"n" number	D			n
D: Destination node beginning receive word				of send		…
C: Source node first control data word				words
				n
15 14	0
C

"n" number of send words

0000 to 03DE (Hex): 0 to 990 words

0:Destination network address not specified (local network)

1:Destination network address specified.

1514131211 8 7 0

C +1 1 1

Number of retries

0 to F (Hex): 0 to 15 retries Direct/Indirect

0:Direct; 1: Indirect

0:Response required

1:Response not required

Always "1" for Controller Link Networks

Response monitor time

00 (Hex):	2 s (for 2 Mbps)
	4 s (for 1 Mbps)
	8 s (for 500 Kbps)

01 to FE (Hex): 0.1 to 25.4 s (unit: 0.1 s)

FF (Hex): No response monitoring

Always "1" for Controller Link Networks

15 8 7 0

C + 2

C + 3

Destination unit address

00 (Hex):		PLC's CPU Unit
01 to 0F (Hex):		Computer (user program)
		(02 to 0F (Hex) are used
		when using Controller Link
		Support Boards for PCI
		Bus only.)
10 to 1F (Hex):		Unit Nos. 0 to 15
FE (Hex):		Unit connected to network
15		0
	0		0

Destination node address (N)

01 to 20 (Hex): 1 to 32 (or 01 to 3E (Hex): 1 to 62)

The same data can be broadcast to all nodes on the network by setting the destination node address to FF (Hex).

The range of node addresses will vary for networks other than Controller Link Networks.

Destination network address

00 (Hex):	Local network
01 to 7F (Hex):	1 to 127

This setting is enabled only when Destination network address specified" is set in word C. When specifying a destination network address, set all the nodes in the routing tables. For de tails on routing tables, refer to Section 7 Network Interconnections.

Note 1. When communicating in the same network with CVM1 and CV-series PLCs manufactured prior to April 1996, the local network address cannot be set to “00.” Set a number other than “00” as the local network address in the routing tables, and then specify that number.

2.With the message service, there is no guarantee that a message to a des- tination node will reach its destination. It is always possible that the mes- sage may be lost in transit due to noise or some other condition. When using the message service, it is advisable to prevent this situation from oc- curring by performing resend processing at the node where instructions are executed. With the SEND, RECV, and CMND instructions, resend pro- cessing is performed automatically once the number of retries has been set, so be sure to specify a number other than “0” for the number of retries.

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