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

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Figure 3-12 shows the structure of a legal ASCII, Binary, Decimal, Floating-Point or Integer data table address for the PLC-5.

Table 3-15 shows examples of legal ASCII, Binary, Decimal, Floating-Point and Integer data table addresses for the PLC-5.

Figure 3-12 PLC-5 ASCII, Binary, Decimal, Floating-Point and Integer Data Table Address Format

Table 3-15 Example PLC-5 ASCII, Binary, Decimal, Floating-Point and Integer Data Table Address Format
Example Address | MMS Type1 | Description
--- | --- | ---
$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
A10:20 | VISIBLE_STRING 5 | Word 20 of ASCII file 10
A11:0 | OCTET_STRING 4 | Word 0 of ASCII file 11
B91:20/10 | BIT_STRING 5 | Bit 10 of word 20 of binary file 91
B:33 | UNSIGNED_16 | Word 33 of the default binary file (3)
N:91 | UNSIGNED_16 | Word 91 of the default integer file (7)
F:3 | FLOAT | Word 3 of the default floating-point file (8)
B/155 | BIT_STRING | Bit 11 of word 9 in the default binary file (3)

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.
4ASCII section only.
5Bit writes that span more than one element are not supported.

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