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183
CHAPTER 13 READING/WRITING DEVICE DATA OF ANOTHER STATION CPU BY IP ADDRESS SPECIFICATION
13
13.1 In
structions to Read
/write Device Da
ta of
Another
Station
CPU by IP Address S
p
ecification
(2) Applicable devices
The following table lists the devices whose data can be read from and written to a target CPU module using the
SP.READ/SP.WRITE instructions:
(3) How to specify the CPU module device on another station
(a) Device specification
In the device specification method, data can be read from and written to the devices within the device range of
the CPU module on the host station. To access the entire device range of the CPU module on another station,
the device range of the CPU module on the host station must be the same as that of the CPU module on
another station.
(b) String specification
In the string specification method, data can be read from and written to the entire device range of the CPU
module on another station. The device range of the CPU module on the host station does not have to be the
same as that of the CPU module on another station.
Category
Type
Device name
Requirements for configuration
Internal user device
Bit device
X, Y, M, L, B, F, SB
• The digit specification range must be 16
bits.
• The bit device number must be a multiple
of 16 (10
H
).
Word device
T, ST, C, D, W, SW
-
Internal system device
Bit device
SM
• The digit specification range must be 16
bits.
• The bit device number must be a multiple
of 16 (10
H
).
Word device
SD
-
File register
Word device
R, ZR
-
D0
D0
D9999
D10000
D19999
D9999
The value outside the range of the CPU module
on the host station cannot be specified.
Access is possible.
Access is not possible.
Data register
Data register
Data register
Range of the CPU module
on the host station
(D = 10000 points)
Range of the CPU module
on another station
(D = 20000 points)
Program
D0
D0
D19999
D9999
The value outside the range of the CPU module
on the host station can be specified.
Access is possible.
Data register
Data register
Range of the CPU module
on the host station
(D = 10000 points)
Range of the CPU module
on another station
(D = 20000 points)
Program
Содержание melsec q03ud(E)cpu
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