KoamTac KDC200 KDC250, Руководство по программированию

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KDC200 Programming Manual
i) KDC200 exits waiting state if it receives any response from HOST. KDC200 replies to HOST with
sending ‘@’ for a success response.
j) KDC200 waits for 1 second and exits waiting state with sending a ‘!’ to HOST if there is no
response from HOST.
k) KDC200 goes to ready state.
Synchronization mode
Synchronization mode is initiated by HOST with sending a command to KDC200 to read a barcode stored in
KDC200 internal flash memory. There is no difference from HOST side handling a packet data either
Synchronization or Wedge mode. However, KDC200 sends a barcode up to 10 times repeatedly until it receives
a success response from HOST. The following is detailed steps between the HOST and KDC200.
a) HOST configures KDC200 to send packet data
b) HOST sends a command(‘P’ and index) to KDC200 to read stored barcode
c) KDC200 sends a stored barcode to HOST with packet data format
d) KDC200 goes to waiting state.
e) HOST receives a packet data from KDC200.
f) HOST checks if it receives a packet data without error.
g) HOST sends a success response by sending a character ‘@’ to KDC200 or a failure response by
sending a character ‘!’.
h) KDC200 exits waiting state with sending ‘@’ if it receives a success response and returns to ready
mode. However, if KDC200 got a failure response, it repeats to send the same barcode 10 times until
getting a success response. KDC200 sends a ‘!’ character to HOST if it couldn’t get any responses
from HOST during 1 second.