TM-T88IIIPrinter Status and Signals, GS a

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2.1.1.3 Interface connector terminal assignments and signal functions

Interface connector terminal assignments and signal functions are described in Table 2.1.1.

Table 2.1.1 TM-T88IIIPrinter Status and Signals

Pin	Signal	Signal	Function
number	name	direction	Function
1	FG	—	Frame ground

2	TXD	Output	Transmit data

3	RXD	Input	Receive data
4	RTS	Output	Same as DTR signal

6	DSR	Input	This signal indicates whether the host computer can receive data.
			SPACE indicates that the host computer can receive data, and MARK
			indicates that the host computer cannot receive data.
			When DTR/DSR control is selected, the printer transmits data after
			confirming this signal (except when transmitting data by DLE EOT, and
			GS a).
			When XON/XOFF control is selected, the printer does not check this
			signal.
			Changing the DIP switch setting enables this signal to be used as a
			reset signal for the printer (refer to Section 3.3.3).
			The printer is reset when the signal remains MARK for
			1 ms or more. (refer to Section 2.1.1.7)
7	SG	—	Signal ground

20	DTR	Output	1) When DTR/DSR control is selected, this signal indicates whether the
			printer is busy. SPACE indicates that the printer is ready to receive
			data, and MARK indicates that the printer is busy. The busy
			condition can be changed by using DIP SW 2-1 as follows (refer to
			Section 3.3.3):
						DIP SW 2-1 status
					Printer status	ON	OFF
					1. During the period from when the power is	BUSY	BUSY
					turned on (including resetting using the
					interface) to when the printer is ready to receive
					data.
					2. During the self-test.	BUSY	BUSY
				Offline	3. When the cover is open.	—	BUSY
				Offline	4. During paper feeding using the paper feed	—	BUSY
					4. During paper feeding using the paper feed	—	BUSY
					button.
					5. When the printer stops printing due to a	—	BUSY
					paper-end.
					6. During macro executing standby status.	—	BUSY
					7. When a temporary abnormality occurs in the	—	BUSY
					power supply voltage.
					8. When an error has occurred.	—	BUSY
					9. When the receive buffer becomes full.(*1)	BUSY	BUSY

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TM-T88IIIseries

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REVISION

EPSON Specification (STANDARD)

B	NEXT	SHEET
B	12	11
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TM-T88III Series specifications

The Epson TM-T88III Series is among the most popular thermal receipt printers available in the market, engineered for high performance and versatility in point-of-sale (POS) environments. Known for its reliability and efficiency, the TM-T88III is particularly suited for retail, hospitality, and other service-oriented industries where quick and accurate printing is essential.

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Energy efficiency is another characteristic of the TM-T88III, as it complies with international energy-saving standards. This not only contributes to greener business practices but also reduces electricity costs.

In summary, the Epson TM-T88III Series is a reliable, efficient, and feature-packed thermal receipt printer that meets the demands of fast-paced retail and hospitality environments. With its high-speed printing, versatile connectivity options, and user-friendly design, businesses can count on the TM-T88III to enhance their operational efficiency and customer satisfaction. Whether you’re looking for reliability, performance, or cost-effectiveness, the TM-T88III stands out as a preferred choice in contemporary POS printing solutions.

Epson TM-T88III Series specifications TM-T88IIIPrinter Status and Signals, GS a

Models: TM-T88III Series

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Table 2.1.1 TM-T88IIIPrinter Status and Signals

DSR

GS a).

DTR

BUSY

TM-T88IIIseries

TM-T88III Series specifications