87
Configuration of Function Blocks Section 3-1
1,2,3... 1. According to CX-Process Tool
a. Upload/download of function block files (appended with the .ist exten-
sion)
b. This indicates reading/writing on validate action or monitor run status
windows.
By uploading/downloading by function block files (appended with the .ist
extension), ITEMs are divided into two types: ITEMs to be set as defaults
(called “default data”) and ITEMs (called “operation data”) that can be set
in either CX-Process Tool or SCADA software.
R: Upload by file, W: Download by file
(S): Initial setting data, (O): Operation data
r: Read in the validate action window of CX-Process Tool
w: Write in the validate action window of CX-Process Tool
2. According to ITEM Setting block
This indicates reading/writing by the Constant ITEM Setting block (Block
Model 171) or the Variable ITEM Setting block (Block Model 172).
3. According to Sequence Tables or Step Ladder Program
This indicates reading/writing by the Sequence Table (Block Model 302),
Step Ladder Program (Block Model 301) or the Contact Distributor block
(Block Model 201).
4. According to HMI
This indicates sending/receiving data for the CPU Unit using the HMI.
Each of the ITEMs in function blocks can be read and written by FINS com-
mands (command codes 0240, 0241, 0242 or 0243 Hex).
ITEM type
ITEM
Data description
ITEM type: Indicates the type of ITEM according to the following categories:
(For details of categories, see 3-1-1 "Configuration of Function Blocks" in this manual.)
Contact input, contact output, analog input, analog output, analog input connection information, accumulated
value input, accumulated value output, accumulated value input connection information and parameter
Symbol: Indicates the symbol that is indicated in CX-Process Tool.
Analog input: X, Analog output: Y, Contact input: S, Contact output: U, etc.
ITEM: Indicates the ITEM number in ascending order.
Data description: Indicates the name of the ITEM and its content.
Data range: Indicates the range of data that can be stored.
Default: Indicates the default on CX-Process Tool.
R/W mode: Indicates which of the following modes each ITEM can be read or
written by. (R: Read, W: Write, R/W: R/W-enabled)
CX-Process Tool,
ITEM Setting blocks (block models 171/172), Sequence Control
Program (block model 301/302), HMI function.
Data length: Indicates the data length (bytes) when
each ITEM is read or written by a FINS
command. This item has no meaning for
other commands.
R/W mode
R
: Read, W: Write, R/W: R/W: enabled,
: R/W-disabled
Cold start initialization: Indicates whether the content of the ITEM is initialized when a cold start is performed
Symbol
000
001
24
002
003
Contact
input
Parameter
Special
Execution error indication
Stop block operation command
(0: Cancel stop, 1: Stop)
Comment
Model: Basic PID
0: Normal, Other: Error
(See Appendix "Execution Error
Code List.")
23
characters
0, 1
011
Data range
Default
Cold start
initialization
According
to CX-
Process
Tool
According
to ITEM
Setting
block
According
to
Sequential
Control
Block
According
to HMI
1
2
2
Data
length
(bytes)
0
011
0000
Yes
---
---
Yes
R/W (S)
S, R
S
---
R/W (S)
R
--- ---
--- ---
--- ---
--- ---
---
---
Block
name
Note: On CX-Process Tool, the R/W mode is indicated by W: Download in file
units, R: Upload in file units, r: Read in the validate action window or
monitor run status window, r/w: Read/write in the validate action window
or monitor run status window, (S): Initial setting data (O): Operation data
---
Note: r and r/w: Read and read/write for validate
action or monitor run status by CX-Process
Tool. S: Initial setting data, (O): Operation
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