BASEstar^tm Open DAS
for Allen-Bradley Data Highway^tm
on Tru64^tm UNIX
Installation and User's Guide

Extended addressing is an alternative form of addressing memory in the PLC-3. Only data table area addresses are supported (area 3).

Figure 3-9 shows the structure of legal extended addresses.

Table 3-12 shows example addresses and supported data types for the PLC-3.

Figure 3-9 PLC-3 Extended Address Format

Table 3-12 Example PLC-3 Extended Addresses

Example Address	MMS Type1	Description
E3.1.1.0.0.77	INTEGER_16	Word 77 octal of the output image (1) file
E3.1.9.0.0.30	VISIBLE_STRING	Word 30 of ASCII (9) file 0
E3.1.10.8.99.0	INTEGER_32	Longword 99 of high-order integer (10) file 8
E3.1.4.0.99.2	UNSIGNED_16	Accumulated value of counter (4) 99
E3.1.8.8.0.183/16	BIT_STRING	Bit 16 octal of word 183 of binary (8) file 8