Sharp ER-A470 User Manual

4) Up-loading matrix for the satellite
STATE Initial After receiving ID-ENQ and sending ACK. After sending NAK
EVENT 0 1 2
ID-ENQ
Satellite checks the terminal No.:If it is correct, satellite
sends ACK and goes to 1.
If it is not correct, satellite ignores the ID-ENQ.
Satellite checks the terminal No.:If it is correct, satellite
sends ACK and goes to 1.
If it is not correct, satellite ignores the ID-ENQ.
—
ACK — — —
NAK — — —
EOT — —
Satellite goes to 0.
(ERROR END)
TEXT —
Satellite checks the text block, if the block is correct,
satellite sends ACK and goes to 3.
If it is not correct, Satellite sends NAK and goes to 2.
If transmission cannot be continued, satellite sends EOT
and goes to 0.
(ERROR END)
Satellite checks the text block, if the block is correct,
Satellite sends ACK and goes to 3.
If it is not correct, Satellite sends NAK and goes to 2.
If transmission cannot be continued, satellite sends EOT
and goes to 0.
(ERROR END)
TIME-UP —
Satellite goes to 0.
(ERROR END)
Time-up is 7 seconds
Satellite goes to 0.
(ERROR END)
Time-up is 7 seconds
STATE After receiving text and sending ACK After sending ENQ After sending TEXT
EVENT 3 4 5
ID-ENQ — — —
ACK —
Satellite sends the text and goes to 5. Satellite sends the text and goes to 5, or sends the EOT
and goes to 0.
(Normal END)
NAK — —
Resends the text and then goes to 5.
If satellite has resent the text two times, sends EOT and
goes to 0.
(ERROR END)
EOT
Satellite sends ENQ and goes to 4. Resends the ENQ and then goes to 4.
If Satellite has resent the ENQ two times, sends EOT and
goes to 0.
(ERROR END)
Satellite goes to 0.
(ERROR END)
TEXT
Satellite checks the text block, if the block is correct,
satellite sends ACK and goes to 3.
If it is not correct, satellite sends NAK and goes to 2.
If transmission cannot be continued, satellite sends EOT
and goes to 0.
(ERROR END)
——
TIME-UP The host goes to 0.
(ERROR END)
Time-up is 7 seconds
Resends the ENQ and then goes to 4.
If satellite has resent the ENQ two times, sends EOT and
goes to 0.
(ERROR END)
Resends the text and then goes to 5.
If satellite has resent the text two times, sends EOT and
goes to 0.
(ERROR END)
Time-up: Four seconds after sending of text.
Two second after sending of ENQ.
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Sharp ER-A470 Specifications

General

Brand	Sharp
Model	ER-A470
Category	Cash Register
Language	English