Rockwell Automation 1746-BAS BASIC LANGUAGE - Manual (Page 223)

Publication 1746-RM001A-US-P
Input Functions 13-33
The third input argument is the file number to be read on the PLC remote device
(0 through 255). If the number is not within this range, the status equals 2 and the
read message does not occur. The parameter is ignored if the common interface file
is chosen in the first parameter, but must still be PUSHed.
The fourth input argument is the file type to be read from the PLC remote device.
Enter the file type code as shown below. This argument is ignored if the common
interface file is chosen in the first parameter but must still be PUSHed (assumes
integer type). If the file type is not one of these, the status equals 2 and the read
message does not take place.
The fifth input argument is the starting word offset within the file on the PLC-2
remote device (0 through 32766). For PLC-3 integer, binary, or status files, the
value is 0-9999. For PLC-3 I/O files, the value is 0-4095. For PLC-3 timer or
counter files the value must be 0. If the number is not within this range, the status
equals 2 and the transfer does not occur.
The sixth input argument is the number of elements to be transferred. If the
number is not within the range shown, the status equals 2 and the transfer does not
occur.
Table 13.10 File Type to be Read from Remote Device
File Type File Type Code Words/Element (1 word = 16 bits)
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
Input File ASC(I) 1 word/element
Output File ASC(O) 1 word/element
Table 13.11 Valid Element Length Range
File Type Code Valid Element Length Range
ASC(N) 1 to 64
ASC(S) 1 to 64
ASC(C) 1 to 21
ASC(T) 1 to 21
ASC(B) 1 to 64
ASC(R) 1 to 21
ASC(I) 1 to 21
ASC(O) 1 to 21
Common Interface File 1 to 21