Omron SYSMAC CS1W-CLK13 Operation Manual page 167

Introduction
RECV
(↑)RECV(98)
S
S: Remote node beginning send word
D: Local node beginning receive word
D
C: Local node beginning control data word
C
15
C
15
C+1 0
15
C+2
Remote (source) node M
01 to 3E (Hex): 1 to 62 (*1)
The range of node addresses will vary for networks
other than Controller Link Networks.
*1 Only node addresses 1 to 32 can be specified when Optical Bus Controller Link Units/Boards (CLK11) are
combined in a network with Optical Ring Controller Link Units/Boards operating in token-bus mode.
144
3. If the total number of data link words is increased, the communications cy-
cle time will be increased. This may cause timeout errors to occur when
waiting for the response. In that case, lengthen the response monitor time
(control data word C+4).
RECV receives "m" words beginning with S (the beginning word for data
transmission at the remote node, M) to the words beginning with D (the begin-
ning word for data reception at the local node).
0
"m" number of send words
0000 to 03DE (Hex): 1 to 990 words
11 8 7 0
0
Remote (source) network address
00 (Hex): Local network
01 to 7F (Hex): 1 to 127
11 8 7 0
Remote unit address
00 (Hex):
01 (Hex):
10 to 1F (Hex): Unit nos. 0 to 15
E1 (Hex):
FE (Hex):
Note 1. When communicating with a CVM1 or CV-series PLC manufactured prior
to April 1996 on the local network, 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 re-
mote node will reach its destination. It is always possible that the message
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 occurring by
performing resend processing at the node where instructions are issued.
With the SEND, RECV, and CMND instructions, resend processing is per-
formed automatically once the number of retries has been set, so be sure
to specify a number other than "0" for the number of retries.
Local node
15 0
D
m
15 11 8 7
C+3
0
Communication port No.
0 to 7 (Hex)
0: Response required
1: Response not required
C+4
PLC's CPU Unit
Computer (user program)
Inner Board
Unit connected to network
Remote (source) node M
15
S
"m" num-
ber of
send
words
3 0
0
Number of retries
0 to F (Hex): 0 to 15 retries
Response monitor time
0000 (Hex): 2 s
0001 to FFFF (Hex): 0.1 to 6,553.5 s
(Unit: 0.1 s)
If the transmission speed is slow, then setting
a small value may generate an error. The
standard is approximately 4 seconds at 1
Mbps or 8 seconds at 500 Kbps.
Section 6-1
0