Rs-232 – Argox AS-9500 User Manual

Page 20

Advertising
background image

19

RS-232

RTS/CTS-If the scanner wants to send the barcode data to

host computer, it will issue the RTS signal first, wait for the

CTS signal from the host computer, and then perform the

normal data communication. If there is no replied CTS signal

from the host computer after the timeout (Response Delay)

duration, the scanner halts transmission until it detects another

active CTS signal.

Xon/Xoff- When the host computer is unable to accept data, it

sends a Xoff code to inform the scanner to suspend data

transmission, and Xon to continue.

ACK/NAK- When the ACK/NAK protocol is used, the scanner

waits for an ACK (acknowledge) or (not acknowledge) from the

host computer after data transmission, and will resend in response

to a NAK.

Response Delay

The unit stays awake to receive data until the RS-232

Receiver Time-Out expires. A trigger command resets the

time-out. When an RS-232 receiver is sleeping, a character

may be sent to wake up the receiver and reset the time-out.

A transaction on the CTS line will also wake up the receiver.

The receiver takes 300 milliseconds to completely come up.

Change the RS-232 receiver time-out by scanning the bar code

below, then scanning digits from the inside back cover

of this manual, then scanning Save. The range is 0 to 300

seconds. Default = 0 seconds (no time-out - always on).

Advertising