Denso Power Net Terminal BHT-7500 Specifiche Pagina 407

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Chapter 17. Spread Spectrum Communication (BHT-7500S only)
398
17.3 Wireless Communications-
related Statement
Syntax: OPEN "COM3:" AS [#] filenumber
Description:
This statement opens a wireless communications device file.
A wireless communications device file cannot be opened with an optical
interface device file concurrently. If you attempt to open them concur-
rently, a run-time error will occur.
A wireless communications device file can be opened with a bar code
device file concurrently.
Syntax error: Refer to Chapter 14, "Statement Reference."
Run-time errors:
OPEN "COM3:"Open a wireless communications device file
Error code Meaning
02h
Syntax error
37h
File already open
3Ah
File number out of the range
45h
File already open (You attempted to open a wireless communica-
tions file and the optical interface of a communications device file
concurrently.)
401h
Failed to open a wireless communications device file.
TIP
A wireless communications device uses TCP/IP for reading or writing data, unlike
other communications devices. For details about programming for using TCP/IP over
a wireless communications device, refer to Chapter 18, "TCP/IP."
To close a wireless communications device file, use a CLOSE statement listed in
Chapter 14.
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