Rockwell-automation 1771-DB BASIC MODULE Manual de usuario descargar pdf (Pagina 276)

Chapter

Call Routines 69–127

13 -18

Use CALL 90 to read up to 40 words from the designated node address,

file number, file type, and element offset of a remote DH-485 data file to

the BASIC module input buffer starting at word 100.

Input and Output Arguments

This routine has six input arguments and one output argument.

Argument Description Page

input 1

node address of the remote device (0–31) 13 -18

input 2 file number of the remote device (0–255) to be read 13 -18

input 3 file type read from the remote device 13 -18

input 4 starting element offset within the file on the remote

device (0 to 32767)

13 -19

input 5 number of elements to be transferred 13 -19

input 6 message time-out value 13 -19

output 1 call status 13 -20

Input Argument One

The first input argument is the node address of the remote device (0 to 31).

If the number is not within the range 0 to 31, then the output argument

equals 10, and the read message does not take place.

Input Argument Two

The second input argument is the file number on the remote device (0 to

255) to be read. If the number is not within the range 0 to 255, then the

output argument equals 11, and the read message does not take place.

Input Argument Three

The third input argument is the file type read from the remote device.

If the file type is not one of the valid types listed in the table, then the

output argument equals 241, and the read message does not take place.

File type File type code Words/Element

integer file

ASC(N) 1 word/element

status file ASC(S) 1 word/element

counter file ASC(C) 3 words/element

timer file ASC(T) 3 words/element

bit file ASC(B) 1 word/element

control file ASC(R) 3 words/element

CALL 90: Read Remote

DH-485 Data File to BASIC

Input Buffer

1 2 ... 271 272 273 274 275 276 277 278 279 280 281 ... 393 394

Sin comentarios

Rockwell-automation 1771-DB BASIC MODULE Manual de usuario Pagina 276