Revision: 4.9
Download this page along with the Notes and Wiring Diagrams as a Microsoft Word
file "Notes.doc" for best printing. This file is included on the disks
that come with the MSP and with all driver downloads.
Data Memory Usage. The following are block
diagrams show the flow of execution and the data resources used by the different drivers.
Note that single channel drivers use the memory in the driver logic. The multiplexed
drivers use a separate block of storage register for each channel. The data in the storage
block is moved into and out of the memory used by the driver logic.
Single Input
Single Output
Multiplexed Input
Multiplexed Output
Logic Memory Usage
MicroLogix
Driver |
Channels |
Memory |
|
Input |
Output |
Used |
Used by Empty
Program |
Used by Driver |
Available Basic |
Used % Basic |
For First Point |
For Second Point |
| Msp_I |
1 |
|
287 |
204 |
83 |
941 |
9% |
|
|
| Msp_I_M |
2 |
|
302 |
204 |
98 |
941 |
10% |
293 |
9 |
| Msp_IO |
1 |
1 |
358 |
204 |
154 |
941 |
16% |
|
|
| Msp_IO_M |
2 |
2 |
384 |
204 |
180 |
941 |
19% |
|
|
| Msp_O |
|
1 |
284 |
204 |
80 |
941 |
9% |
|
|
| Msp_O_M |
|
2 |
299 |
204 |
95 |
941 |
10% |
290 |
9 |
SLC Fixed
Driver |
Channels |
Memory |
|
Input |
Output |
Used |
Available
Basic |
Used
% Basic |
Available
Expanded |
Used
% Expanded |
For
First Point |
For
Second Point |
| Msp_I |
1 |
|
257 |
1023 |
25% |
|
|
|
|
| Msp_I_M |
2 |
|
274 |
1023 |
27% |
|
|
265 |
9 |
| Msp_IO |
1 |
1 |
326 |
1023 |
32% |
|
|
|
|
| Msp_IO_M |
2 |
2 |
356 |
1023 |
35% |
|
|
|
|
| Msp_O |
|
1 |
260 |
1023 |
25% |
|
|
|
|
| Msp_O_M |
|
2 |
278 |
1023 |
27% |
|
|
269 |
9 |
|
