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Name
(ER)
● This is convenient to read data from Panasonic PLC via MODBUS-RTU.
● For MODBUS reference Nos. and device Nos., refer to
Table".
8.1.8 [F159 MTRN] Serial Data Send / Receive Instruction
■
Instruction format
■
Devices that can be specified (indicated by ●)
Operands
WX
S
n
●
D
(Note 1)
A character constant cannot be specified.
■
Operands
Item
Settings
S
Starting area (data register) of the data table
Area storing the number of bytes of data to be sent, or constant data
● Add the terminator (end code) during transmission when the value is positive.
n
● Do not add the terminator (end code) during transmission when the value is negative.
● In the case of H8000, the purpose of COM port is switched.
D
COM port number for sending data (K0: COM0; K1: COM1; K2: COM2; K3: COM3)
WUME-FPXHCOMG-02
Description
Turns ON when the [S2] or [D] area is exceeded, if the number of words specified in [S1] is
taken during transfer in word units.
Turns ON when [S2]+[n] exceeds the [S2] area.
Turns ON when the COM port specification of control data specified in [S1+1] is not
MODBUS mode.
Turns ON when the [S2] area is DT / WL / LD, during transfer in bit units.
Turns ON when the [S2] device No. is not 0.
WY
WR
WL
●
●
●
8.1 Communication Instruction
"6.1.2 Device No. Correspondence
SV
EV
DT
LD
●
●
●
●
Constan
t
I
K
H
●
●
●
●
●
Index modifier
(Note 1)
●
●
●
8-15
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