Command Control via the Network (continued)

2.Response code / Error code KVKRZVKH[DGHFLPDO

7KH FRQQHFWLRQ ,' LV DWWDFKHG IRU WKH7&3 V UHVSRQVH  HUURU FRGHV DUH XVHG7KHFRQQHFWLRQ,'LVVDPHDVWKHVHQGLQJFRPPDQGIRUPDW

(1) ACK reply : 06h + ××h

(îîKFRQQHFWLRQ,')

(2)NAK reoly : 15h + ××h

(3)Error reply : 1Ch + 0000h + ××h

(4)Data reply : 1Dh + xxxxh + ××h

(5)Authentication error reply : 1Fh + 0400h + ××h

(6)Projector busy reply: 1Fh + ××××h + ××h

:KHQWKHSURMHFWRULVWRREXV\WRUHFHLYHVWKHFRPPDQGWKHSURMHFWRU

UHWXUHQVWKHHUURUFRGH

,QVXFKDFDVHFKHFNWKHVHQGLQJFRGHDQGVHQGWKHVDPHFRPPDQGDJDLQ

Automatic Connection Break

7KH 7&3 FRQQHFWLRQ ZLOO EH DXWRPDWLFDOO\ GLVFRQQHFWHG DIWHU WKHUH LV QR

FRPPXQLFDWLRQIRUVHFRQGVDIWHUEHLQJHVWDEOLVKHG

Authentication

7KH SURMHFWRU GRHV QRW DFFHSW FRPPDQGV ZLWKRXW DXWKHQWLFDWLRQ VXFFHVV ZKHQDXWKHQWLFDWLRQLVHQDEOHG7KHSURMHFWRUXVHVDFKDOOHQJHUHVSRQVHW\SH DXWKHQWLFDWLRQZLWKDQ0' 0HVVDJH'LJHVW DOJRULWKP:KHQWKHSURMHFWRULV XVLQJD/$1DUDQGRPE\WHVZLOOEHUHWXUQHGLIDXWKHQWLFDWLRQLVHQDEOHG%LQG

WKLVUHFHLYHGE\WHVDQGWKHDXWKHQWLFDWLRQSDVVZRUGDQGGLJHVWWKLVGDWDZLWK

WKH0'DOJRULWKPDQGDGGWKLVLQIURQWRIWKHFRPPDQGVWRVHQG

)ROORZLQJLVDVDPSOHLIWKHDXWKHQWLFDWLRQSDVVZRUGLVVHWWR³SDVVZRUG´DQGWKH

UDQGRPE\WHVDUH³DIF´

1)6HOHFWWKHSURMHFWRU

  5HFHLYHWKHUDQGRPE\WHV³DIF´IURPWKHSURMHFWRU

  %LQG WKH UDQGRP  E\WHV ³DIF´ DQG WKH DXWKHQWLFDWLRQ SDVVZRUG ³SDVVZRUG´DQGLWEHFRPHV³DIFSDVVZRUG´

  'LJHVWWKLVELQG³DIFSDVVZRUG´ZLWK0'DOJRULWKP

,WZLOOEH³HGDGIIDEFHIGEGH´

  $GGWKLV³HGDGIIDEFHIGEGH´LQIURQWRIWKHFRPPDQGVDQG VHQGWKHGDWD

6HQG³HGDGIIDEFHIGEGH´FRPPDQG

  :KHQWKHVHQGLQJGDWDLVFRUUHFWWKHFRPPDQGZLOOEHSHUIRUPHGDQGWKH UHSO\GDWDZLOOEHUHWXUQHG2WKHUZLVHDQDXWKHQWLFDWLRQHUURUZLOOEHUHWXUQHG

NOTE‡$VIRUWKHWUDQVPLVVLRQRIWKHVHFRQGRUVXEVHTXHQWFRPPDQGV WKHDXWKHQWLFDWLRQGDWDFDQEHRPLWWHGZKHQWKHVDPHFRQQHFWLRQ

16

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Hitachi ED-D11N ACK reply 06h + ××h, UhwxuhqvWkhHuuruFrgh,  LJHVWWKLVELQG³DIFSDVVZRUG´ZLWK0DOJRULWKP