Pin Assignments
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Ready/Busy/Flow Control
Ready/Busy is the hardware flow control for the serial interface on the M-5900RV
printer. By raising/lowering the voltage level on Pin 20 of the RS232 port, the
printer notifies the host when it is ready to receive data. Pin 4 (RTS) and pin 20
(DTR) are the important signals on the printer for this method of flow control.
The host must be capable of supporting this flow control method for it to function
properly.
PN 9001081
SATO M-5900RV Operator and Technical Reference Manual
Rev. C
RS232C Interface Signals
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Page 5-5