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RS-232C Communication (continued)

NOTE 2SHUDWLRQFDQQRWEHJXDUDQWHHGZKHQWKHSURMHFWRUUHFHLYHVDQ

XQGH¿QHGFRPPDQGRUGDWD

3URYLGHDQLQWHUYDORIDWOHDVWPVEHWZHHQWKHUHVSRQVHFRGHDQGDQ\

RWKHUFRGH

7KHSURMHFWRURXWSXWVWHVWGDWDZKHQWKHSRZHUVXSSO\LVVZLWFKHG21DQG

ZKHQWKHODPSLVOLW,JQRUHWKLVGDWD

&RPPDQGVDUHQRWDFFHSWHGGXULQJZDUPXS

3. Response code / Error code

KVKRZVKH[DGHFLPDO

(1) ACK reply : 06h

:KHQWKHSURMHFWRUUHFHLYHVWKH6HW,QFUHPHQW'HFUHPHQWRU([HFXWH

FRPPDQGFRUUHFWO\WKHSURMHFWRUFKDQJHVWKHVHWWLQJGDWDIRUWKHVSHFL¿HG

LWHPE\>7\SH@DQGLWUHWXUQVWKHFRGH

(2) NAK reply : 15h

:KHQWKHSURMHFWRUFDQQRWXQGHUVWDQGWKHUHFHLYHGFRPPDQGWKHSURMHFWRU

UHWXUQVWKHHUURUFRGH

,QVXFKDFDVHFKHFNWKHVHQGLQJFRGHDQGVHQGWKHVDPHFRPPDQGDJDLQ

(3) Error reply : 1Ch + 0000h

:KHQWKHSURMHFWRUFDQQRWH[HFXWHWKHUHFHLYHGFRPPDQGIRUDQ\UHDVRQV

WKHSURMHFWRUUHWXUQVWKHHUURUFRGH

,QVXFKDFDVHFKHFNWKHVHQGLQJFRGHDQGWKHVHWWLQJVWDWXVRIWKHSURMHFWRU

(4) Data reply : 1Dh + xxxxh

:KHQWKHSURMHFWRUUHFHLYHVWKH*(7FRPPDQGFRUUHFWO\WKHSURMHFWRUUHWXUQV

WKHUHVSRQFHFRGHDQGE\WHVRIGDWD

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