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3.3.5 SLC Addressing Syntax and Supported Data Types
This section describes legal data table addresses and data types for
the 1747 SLC 500 family.
The structure of a legal data table address for the SLC differs depending on the table that is being addressed. The SLC supports the following data table sections:
I - Input
O - Output
S - Status
B - Binary
T - Timer
C - Counter
R - Control
N - Integer
F - Floating-Point
A - ASCII
ST - String
ASCII, ASCII string and floating-point are available only on SLC 5/03 Series C with OS301 and SLC 5/04 Series A with OS400. |
Figure 3-40 shows the structure of a legal I/O data table address for the SLC.
Table 3-26 shows examples of legal I/O data table addresses for the SLC.
Figure 3-40 SLC I/O Data Table Address Format
Reading and writing of I/O data table addresses is supported only for SLC-5/03 and SLC-5/04 processors. |
| Example Address | MMS Type1 | Description |
|---|---|---|
| I:4 | UNSIGNED_16 | Input image I/O slot 4 |
| I:5.1 | INTEGER_16 | Input image I/O slot 5 word 1 |
| I:10.1/15 | BIT_STRING | Bit 31 of I/O slot 10 |
| $O:8/1 | BIT_STRING | Bit 1 of I/O slot 8 |
| I:0 | Array of 10 UNSIGNED_16 | Ten words beginning at I/O slot 0 |
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