Special Controller Functions
Appendix C
C–3
Use the P-A/D function to display and change values in controller files. The
only exceptions are Input and Output files, you cannot write to these file
types. The P-A/D function is often useful when starting up or debugging
applications. The following tables list the controller file types that can be
accessed using the P-A/D function:
SLC File Types
PLC File Types
File Type
Identifier
Default
File Number
Read
Write
File Type
Identifier
Default
File Number
Read
Write
Output
O
0
Yes
No
Output
O
0 (fixed)
Yes
No
Input
I
1
Yes
No
Input
I
1 (fixed)
Yes
No
Status
S
2
Yes
Yes
Status
S
2 (fixed)
Yes
Yes
Binary
B
3
Yes
Yes
Binary
B
3
Yes
Yes
Timer
T
4
Yes
Yes
Timer
T
4
Yes
Yes
Counter
C
5
Yes
Yes
Counter
C
5
Yes
Yes
Control
R
6
Yes
Yes
Control
R
6
Yes
Yes
Integer
N
7
Yes
Yes
Integer
N
7
Yes
Yes
ASCII
➀
A
None
Yes
No
Floating Point
F
8
Yes
Yes
ASCII String
➀
ST
None
Yes
No
ASCII
A
9
Yes
Yes
Floating Point
➀
F
None
Yes
Yes
BCD
D
10
Yes
Yes
➀
Not supported by SLC 5/01 or 5/02 controllers.
Block Transfer
BTR or
BTW
11
Yes
Yes
Message
MG
12
Yes
No
PID
PD
13
Yes
Yes
SFC
SC
14
Yes
Yes
ASCII String
ST
15
Yes
No
Using the P-A/D Function
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