For PLC3, PLC5/250, and PLC5 devices, data can be read and written to the following file types:
File Type |
Description |
Comments |
N |
Integer |
|
I |
Input |
Not supported for PLC-5/250, SLC-5/04 or SLC-5/05 |
O |
Output |
Not supported for PLC-5/250, SLC-5/04 or SLC-5/05 |
F |
Floating Point |
Not supported for SLC-5/04 or SLC-5/05 |
B |
Bit |
|
T |
Timer |
PLC-5/250 CTL field is read-only |
C |
Counter |
PLC-5/250 CTL field is read-only |
S |
Status |
|
A |
ASCII |
Not supported for PLC-5/250 |
D |
BCD |
Not supported for PLC-5/250, SLC-5/04 or SLC-5/05 |
H |
High Order Integer |
PLC-3 only |
L |
Long Integer |
PLC-5/250 only |
R |
Control |
Not supported for PCL-3 PCL-5/250 CTL field is read-only |
For points in the Floating Point (F) file type, use the FLOATING point type.
For points in the BCD (D) file type, use the 3D_BCD or 4D_BCD point type.
When using Recipe Management to read and write in Floating Point files, only floating point types are supported.
For the PLC2, data can be read from and written to Register Memory only.
Required Allen-Bradley software. |
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About Allen-Bradley Communications. |