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Using FINS Message Communications Section 6-3
Note 1. Indicates a Unit as shown in the following table.
2. Values of $00 to $3E indicate nodes 0 to 63.
3. Designates the length of time in (0.1-s units) that the PC retries transmis-
sion when bit 15 of C+3 is OFF and no response is received. The default
value is $0000, which indicates 2 seconds. If baud rate is slow and the re-
sponse monitoring time is short, an error may occur.
6-3-4 Sending FINS Commands
DELIVER COMMAND: CMND(490)
Description CMND(490) can be used in the user program of the CS/CJ-series CPU Unit to
send FINS commands to read/write I/O memory, read status data, change the
operating mode, and perform other functions at other nodes.
CMND(490) transmits the command beginning at word S to the designated
Unit at the destination node address in the designated network, and receives
the response beginning at word D.
Unit Setting
CPU Unit 00
User program in FA computer 01
CPU Bus Unit $10 to $1F: Unit numbers 0 to 15
$FE: The local Unit
Variations
↑
CMND(490)
(490)
(@)CMND S D C
Ladder Symbol
S: 1
st
command word
D: 1
st
response word
C: 1
st
control word
Local node (source)
Com-
mand
data
Destination node
Operands
Re-
sponse
data
Interpretation
Execution
Command
Response
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