Omron CQM1H-CLK21 - Manual (Page 199)

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Introduction Section 6-1
RECV RECV receives “m” words beginning with S (the beginning word for data
transmission at the destination node, M) to the words from D (the beginning
word for data reception at the source node) onwards.
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
Direct/Indirect
0: Direct; 1: Indirect
S: Destination node beginning send word
D: Source node beginning receive word
C: Source node first control data word
Destination node M Source node
C + 2
@RECV(98)
S
D
C
C
"m" number of send words
0000 to 03DE (Hex): 0 to 990 words
C + 1 1
Always "1" for Controller
Link Networks
Always "1" for Controller Link Networks
0: Response required
1: Response not required
Destination (transmission source) node address (M)
01 to 20 (Hex): 1 to 32 (or 01 to 3E (Hex): 1 to 62)
The range of node addresses will vary for networks
other than Controller Link Networks.
0: Source network address not specified (local network)
1: Source network address specified.
Response monitor time
00 (Hex): 2 s (for 2 Mbps)
4 s (for 1 Mbps)
8 s (for 500 Kbps)
01 to FE (Hex):
FF (Hex): No response monitoring
Destination (transmission source) unit address
00 (Hex):
PLC's CPU Unit
01 to 0F (Hex): Computer (user program)
10 to 1F (Hex): Unit Nos. 0 to 15
FE (Hex): Unit connected to network
C + 3 0 0
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 the destination network address, set all the nodes in the routing tables. For
details on the routing tables, refer to
1514 0
1514131211 8 7 0
8 7 15 0
15 0
Number of retries
0 to F (Hex): 0 to 15 retries
"m" num-
ber of
send
words
D
15 0 15 0
m
S
…
1
…
0.1 to 25.4 s (unit: 0.1 s)
(02 to 0F (Hex) are used when
using Controller Link Support
Boards for PCI Bus only.)
Section 7 Network Interconnections.