Rockwell-automation 1771-DB BASIC MODULE Manual de usuario descargar pdf (Pagina 287)

Chapter

Call Routines 69–127

13 -29

Use CALL 93 to write up to 40 words starting at word 100 of the BASIC

module output buffer to the remote DH-485 Common Interface File at the

designated node address, starting at the designated word offset.

Input and Output Arguments

This routine has four input arguments and one output argument.

Argument Description Page

input 1

node address of the remote device (1–31) 13 -29

input 2 starting word offset within the file on the remote device

(0 to 255)

13 -29

input 3 number of words to be transferred 13 -29

input 4 message time-out value 13 -29

output 1 call status 13 -30

Input Argument One

The first input argument is the node address of the remote device (1–31).

If the number is not within the range 1 to 31, then the output argument

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

Input Argument Two

The second input argument is the starting word offset within the file on the

remote device (0 to 255). If the number is not within the range (0 to 255),

then the output argument equals 12, and the transfer does not take place.

Important: The offset is twice what you expect. For example, if an offset

of 3 is PUSHed, the data is written to the remote DH-485 data file

beginning at element 6.

Input Argument Three

The third input argument is the number of words to be transferred. If the

number is not within the range specified below, then the output argument

equals 13, and the transfer does not take place.

Input Argument Four

The fourth input argument is the message time-out value. This value is the

number of hundreds of milliseconds that are allowed to receive the write

response (1 to 50 = 0.1 to 5.0 seconds). If the write response is not

received within this time, the message aborts with the output argument

equal to 55. If the number is not within the range 1 to 50, the output

argument equals 14, and the transfer does not take place.

The data from the BASIC module output buffer starting at word 100 is

written to the remote common interface file starting at the specified word,

and filling as many words as specified by the word length of the message.

CALL

93: W

rite Output

Buffer to Remote DH-485

Common Interface File

1 2 ... 282 283 284 285 286 287 288 289 290 291 292 ... 393 394

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