AVE VSI-Pro Max operation manual Dtr, Dsr, Rts, Cts, PIN # Signal Name RS232, Rxd, Txd, Gnd

CONNECTIONS

Pin #	Label	Direction	Function
1	Alarm Out 1	From VSI-Pro Max	Open Collector Transisitor
2	Receive Data	To VSI-Pro Max	Data from Cash Register
3	Transmit Data	From VSI-Pro Max	Data to Cash Register
4	DTR	From VSI-Pro Max	Remain High or RS-485 Input (+)(A)
5	Ground	-------------------	Signal / Power Gnd or Isolated RS-232 Input Gnd
6	DSR	From VSI-Pro Max	Remain High or RS-485 Input (-)(B)
7	RTS	To VSI-Pro Max	Alarm Input or Hardware Handshaking
8	CTS	From VSI-Pro Max	DVR RS-232 Output or Hardware Handshaking
9	Alarm Out 2	From VSI-Pro Max	Open Collector Transistor or Signal / Power Gnd

Table 1: Pin-Out of the DB-9 Female Connector on the VSI-Pro Max 3.2 RS-232 SERIAL INPUT

The VSI-Pro Max accepts serial data via the DB-9 Female connector located on the rear of VSI-Pro Max. This connector is similar to “AT” type computer RS232 serial ports and the pin out is identical. Table 1 shows the standard pin out for VSI-Pro Max RS-232 female connector. On the other hand Table 2 compares the VSI-Pro Max RS-232 with standard “AT” computer’s RS-232 connector.

PIN #	SIGNAL NAME ( RS232 )	VSI-Pro Max
1	CD (Carrier Detect )	Alarm Out 1
2	RXD ( Recieve Data )	RXD
3	TXD ( Transmit Data )	TXD
4	DTR ( Data Terminal Ready )	Aways True
5	SG ( Signal Control )	GND
6	DSR ( Data Set Ready )	Aways True
7	RTS ( Request to Send )	RTS ( Option)
8	CTS ( Clear to Send )	CTS ( Option)
9	RI ( Ring Indicator )	Alarm Out 2

Table 2: RS-232 DB-9 Pin-Out vs VSI-Pro Max DB-9 Pin-Out

VSI-Pro Max POS / Cash Register Interface

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