# BASEstartm Open DAS
for Allen-Bradley Data Highwaytm
on Tru64tm UNIX
Installation and User's Guide

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Figure 3-6 shows the structure of a legal ASCII, Binary, Decimal, Floating-Point, High-Order Integer or Status data table address for the PLC-3.

Table 3-10 shows examples of legal ASCII, Binary, Decimal, Floating-Point, High-Order Integer or Status data table addresses for the PLC-3.

Figure 3-6 PLC-3 ASCII, Binary, Decimal, Floating-Point, High-Order Integer, Integer and Status Data Table Address Format

Table 3-10 Example PLC-3 ASCII, Binary, Decimal, Floating-Point, High-Order Integer, Integer and Status Data Table Address Format
Example Address | MMS Type1 | Description
--- | --- | ---
$S0:0 | UNSIGNED_16 | Word 0 of status file 0
N20:0 | INTEGER_16 | Word 0 of integer file 20
D20:780 | BCD4 2 | Word 780 of decimal (BCD) file 20
F39:19 | FLOAT 3 | Word 19 of floating-point file 39
H8:20 | UNSIGNED_32 4 | Word 20 of high-order integer file 8
H99:0 | INTEGER_32 4 | Word 0 of high-order integer file 99
A10:20 | VISIBLE_STRING 5 | Word 20 of ASCII file 10
A7:0 | OCTET_STRING 5 | Word 0 of ASCII file 7
B5:20/10 | BIT_STRING 6 | Bit 10 octal of word 20 of binary file 5

1Arrays are supported. Structures are not supported. Variable size arrays are not supported.
2Decimal (BCD) section only. The data must be a valid BCD number from 0-9999.
3Floating-point section only.
4High-order integer section only.
5ASCII section only.
6Bit writes that span more than one word are not supported.

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