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CBM-710/720/730/750 User’s Manual
30 CITIZEN
(6) Electrical Characteristics
a) RS-232C Circuit
Input (RD)
MAX232 or equivalent Mark = (-8V): Stop bit
Space = (-8V): Start bit
Output (DTR, TD, FAULT)
MAX232 or equivalent
*DTR (–8V): BUSY *TD Mark = (–8V): 1
(+8V): READY Space = (+8V): 1
*FAULT (–8V): Normal
(+8V): Abnormal