Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 276)

Chapter
Call Routines 69–127 13
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