Epson TM-T88III Series 3 RS-485 Serial Interface, Specifications RS-485 compatible, CS1 CS2

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2.1.3 RS-485 Serial Interface

(An RS-485 serial is a factory option.)

2.1.3.1 Specifications (RS-485 compatible)

Data transmission:	Serial
Synchronization:	Asynchronous
Handshaking:	Depend on the DIP switch settings
	(DTR/DSR or XON/XOFF control)
Signal levels:	2.0 to 5.0 V:	Logic 1
	0.0 to 0.8 V:	Logic 0
Baud rates:	4800, 9600, 19200, 38400 bps
Data word lengths:	7 or 8 bits
Parity settings:	None, even, odd
Stop bits:	1 or more
Connector (printer side):	Female D-SUB25 pin connector

NOTES: • The handshaking data word length, baud rate, and parity depend on the DIP switch (Refer to Section 3.3.3)

•Data transmitted from the printer has 1 stop bit (fixed).

DR1 > DR2		CS1 > CS2 indicates that:
	Channel 1 is high.
	Channel 2 is low.
DR1 < DR2		CS1 < CS2 indicates that:
	Channel 2 is high.
	Channel 1 is low.
	CS1		CS2	Function
	H		L	Communication is available
	L		H	Communication is not available

NOTE:	•	If the electric potential of CS1 is higher than that of CS2, the printer is ready for
		communication (the host is ready to receive data). If the electric potential of CS1 is
		lower than that of CS2, the printer is not ready for communication (the host is not ready
		to receive data).
	DR1		DR2	Function
	H		L	Communication is available
	L		H	Communication is not available
NOTE:	•	If the electric potential of DR1 is higher than that of DR2, the printer is ready for
		communication (the host is ready to receive data). If the electric potential of DR1 is
		lower than that of DR2, the printer is not ready for communication (the host is not ready
		to receive data).

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TM-T88IIIseries

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