Rockwell-automation 2707-NP DTAM Programming Software Manual do Utilizador descarregar pdf (Página 178)

Appendix D

Data Formats

D–8

ASCII

ASCII data formats are fields up to 20 characters long. Each 16 bit address

may contain two ASCII characters (1 byte each). The lowest byte of the base

address stores the first character, the highest byte stores the second character,

the first byte of the next sequential address stores the third character, and so

on. The data held in this range of addresses is expected to be ASCII data.

Note: The ASCII data format is very useful for controller applications

reading ASCII data resident in the controller that has been read by bar code

readers or data collection terminals.

ASCII Data Field

Maximum 20 Characters - Ten 16 Bit addresses

address 1

CHR #2 CHR #1

address 2

CHR #4 CHR #3

address 3

CHR #6 CHR #5

address 4

CHR #8 CHR #7

address 5

CHR #10 CHR #9

address 6

CHR #12 CHR #11

address 7

CHR #14 CHR #13

address 8

CHR #16 CHR #15

address 9

CHR #18 CHR #17

address 10

CHR #20 CHR #19

1 2 ... 173 174 175 176 177 178 179 180 181 182 183 184

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Rockwell-automation 2707-NP DTAM Programming Software Manual do Utilizador Página 178