High−level Instructions
3 − 325
Outline Communicates with an external device using the COM. port of CPU.
Program example
Boolean
Ladder Diagram
Address Instruction
Trigger
S n
10
R0
F144 TRNS, DT 100, K 8
1
1
DF
10
11
12
ST R 0
DF
F144 (TRNS)
DT 100
K8
S Starting 16-bit area for storing data to be sent
n 16-bit equivalent constant or 16-bit area to specify number of bytes to be sent
− When the value is positive, an end code is added.
− When the value is negative, an end code is not added.
− When the value is H8000, the transmission mode of the RS232C port is
changed.
Operands
O
erand
Relay Timer/Counter Register
Index
register
Constant
Index
WX WY WR SV EV DT I K H
modifier
S N/A N/A N/A N/A N/A A N/A N/A N/A A
n A A A A A A A A A A
Explanation of example
When the trigger R0 turns on, 8 bytes of the data stored in data registers DT101 through DT104 are
transmitted from the COM. port.
FP2/FP2SH/FP10SH
F144
Serial data communication
Availability
FP2/FP2SH/FP10SH
(TRNS)
vailable
N/A: Not Available
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