9
Program
C: First control word
・The first address is specified to set the first control word.
・Data is set in the following format.
Item Description
Number of command data bytes The number of command data bytes is set. (#0002 to maximum data length)
Number of response data bytes The number of response data bytes is set. (#0000 to maximum data length)
Serial port number
(Physical port)
One from the range #0 to #4 is set.
(#0: Not used, #1: Port 1, #2: Port 2, #3: Reserved, #4: Reserved)
*If you set the destination unit address to (2) Serial port's unit address as
described below, set #0: Not used.
Destination network address One from the range #00 to 7F is set. (#00: Own network)
Destination node address One from the range #00 to the maximum node address is set. (#00: Transmit
within the local node)
Destination unit address The following (1) or (2) is set.
(1)Unit address
CPU Unit : #00
CPU Bus Unit : #10 + unit number
(e.g., for unit number (&5), Unit address = #10 + #05 = #15)
Special I/O Unit : #20 + unit number
(e.g., for unit number (&10), Unit address = #20 + #0A = #2A)
(2)Serial port's unit address
For SCU
Port 1: #80 + #04 x unit number
Port 2: #81 + #04 x unit number
(e.g., for Port 2 of unit number (&10),
Serial port's unit address = #81 + #04 × #0A(&10) = #81 + #28 = #A9)
Response needed/not needed #0 or #8 is set. (#0: Response needed, #8: Response not needed)
Logical port number One from the range #0 to #7 is set.
Resend times One from the range #0 to F (0 to 15 times) is set.
Response timeout One from the range &1 to 65535 (#0001 to FFFF) (indicating 0.1 to 6553.5
seconds) is set. (#0000: 2s (default value))
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