AMT Datasouth 4500 Series manual Serial Port Specifications, Cable Examples

Data Communications

Serial Port Specifications

Table 3 lists the RS-232 signals supported by the printer.

Pin #	Signal Description	Signal	Direction
		Mnemonic
1	Shield	--	--
2	Received Data	RXD	Input to the printer
3	Transmitted Data	TXD	Output from the printer
4	Clear to Send	CTS	Input to the printer
5	Request to Send	RTS	Output from the printer
6	Data Terminal Ready	DTR	Output from the printer
7	Signal Ground	GND	--
20	Data Set Ready	DSR	Input to the printer
22	Ring Indicator	RI	Output from the printer

Table 3 - CodeWriter 4500 Series RS-232 Signals

Cable Examples

Connecting to DTE (Data Terminal Equipment) host systems with a DB25 connector requires a cable with pin-to-pin wiring and a male DB25 for the printer (Figure 7). Connecting to a DCE (Data Circuit-terminating Equipment) device, such as a modem, will require a “NULL-MODEM” style circuit with appropriate connectors on each end (Figure 8).

4500 Series Printer		DTE Host
DB25 Connector		DB25 Connector
Shield	1	1	Shield
RXD	2	2	TXD
TXD	3	3	RXD
CTS	4	4	RTS
RTS	5	5	CTS
DTR	6	6	DSR
GND	7	7	GND
DSR 20		20 DTR
RI 22		22	RI

Figure 7 – 4500 Series Printer to DTE Host System Cable Diagram

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