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1-8
Variable Areas
Section 1-4
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1-4
Variable Areas
The area used for data exchange when communicating with the K3HB is
called the “variable area.” The PV is read and various setting data are read
and written using the variable area of the K3HB.
Operation commands and reading of machine attributes do not use the vari-
able area.
A variable area is accessed by specifying the position of a variable within the
variable area using the variable type and address.
Variable Types
Variable types in variable areas are as follows:
Addresses (CompoWay/F
Communications)
Each variable type has an address. Addresses are 2 bytes long and written in
hexadecimal. Addresses are assigned according to units of access size.
For more information on addresses, refer to
Number of Elements
The number of elements is expressed as a 2-byte hexadecimal number. The
specification range for the number of elements varies depending on the com-
mand. See
1-9 Commands and Responses (CompoWay/F Communications)
(page 1-13) for more information.
For example, if the number of elements is 0010, the first 16 elements of data
(H'10) from the address are specified.
Set Values
Values read and written to the variable area are expressed in hexadecimal
and disregard the decimal point position (negative values are expressed as a
two's complement).
Example: D'105.0
→
H'0000041A
The variable is an 8-digit number in hexadecimal. Negative values are ex-
pressed as a two's complement. The decimal is disregarded.
Microprocessor
K3HB
Variable area
Operation
commands, etc.
Read/write
Variable type
Description
Area
C0
Read-only parameters
Setting area 0
(during operation)
C1
Protect level
C2
RUN level
C4
Initial setting level
Setting area 1
(during stop)
C5
Input adjustment level
C6
Display adjustment level
C7
Scaling level
C8
Comparative set value level
C9
Linear output level
CA
Communications setting level
CB
Advanced function setting level
0
0
0
0
0
0
#
#
0
A
6
A
5
A
4
A
3
A
2
A
1
A
0
Address (2 bytes)
Содержание K3HB
Страница 2: ...K3HB Digital Indicators Communications User s Manual Revised March 2005...
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Страница 21: ...Part 1 CompoWay F...
Страница 69: ...Part 2 DeviceNet...
Страница 95: ...6 10 Ladder Programming Examples Section 4 3 Remote I O Com munications...
Страница 103: ...7 8 Explicit Messages Specific to DeviceNet compatible Digital Indicators Section 5 3 Explicit Message Communications...
Страница 111: ...8 8 Message Communications Performance Section 6 2 Communications Performance...
Страница 127: ...Part 3 BCD Output...
Страница 147: ......