AT&T 6300 Programmer's Manual page 387

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opens the device in binary mode. BIN is selected by default,

unless ASC is specified. See "Remarks" for further discus-

sion of BIN.

opens the file in ASCII mode. See "Remarks" for further

discussion of ASC.

specifies that a linefeed is to be sent after a carriage return

(see "Remarks").

is an integer expression returning a valid file number which

is associated with the file while it is OPEN.

is the maximum number of bytes that can be read from or writ-

ten to the communications buffer with GET or PUT. The default

The OPEN COM statement must be executed

before a device can be used for RS232

communications.

A COM device may be OPENed to only one

file number at a time.

Any syntax errors in the OPEN COM

statement will result in a "Bad File name"

error. An indication as to which parameter is

in error is not given.

A "Device Timeout" error occurs if Data Set

Ready (DSR) is not detected.

The "speed", "parity", "data", and "stop"

options must be listed in the order shown in

the above syntax. The remaining options may

be listed in any order, but you must list them

after the "speed", "parity", "data", and "stop"

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