Omron SYSMAC CS1W-CLK13 Operation Manual page 168

Introduction
CVM1 and CV-series PLCs
SEND
(↑)SEND(192)
S
S: Local node beginning send word
D: Remote node beginning receive word
D
C: Local node beginning control data word
C
C
15
C+1 0
Remote (destination) network address
00 (Hex): Local network
01 to 7F (Hex): 1 to 127
15
C+2
Remote (destination) node N
01 to 3E (Hex): 1 to 62 (*1)
The same data can be broadcast to all nodes
on the network by setting the remote node address to FF
(Hex).
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.
Note
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).
SEND transmits "n" words beginning with S (the beginning word for data
transmission at the local node) to "n" words beginning with D (the beginning
word for data reception at the remote node, N.)
"n" number of send words
0000 to 03DE (Hex): 1 to 990 words
11 8 7 0
0
11 8 7 0
Remote unit address
00 (Hex): PLC's CPU Unit
01 (Hex): Computer (user program)
10 to 1F (Hex): Unit nos. 0 to 15
FE (Hex): Unit connected to network
1. When using 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 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
S
"n" number
of send
words
n
15 11 8 7 3
C+3 0 0
Communication port No.
0 to 7 (Hex)
0: Response required
1: Response not required
C+4
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
Remote (destination) node N
15 0
D
0
Number of retries
0 to F (Hex): 0 to 15 retries
n
145