HP manual M24SII-V07 EIA-422 4-wire Connection

￿￿￿￿￿￿￿ ￿￿￿ ￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

NOTE: Ports using this configuration will support XON/XOFF handshaking only. You must enable XON/XOFF handshaking in configuration mode for these ports (see Section 8.8.1) and on the equipment that will connect to these ports.

Ports on the M24SII-V07 module using EIA-422 Protocol, 4-wire Operation, and bidirectional Printer Sharing Mode use the following pins and signals for communication:

RJ-11 PIN-OUT INFORMATION

PIN	SIGNAL	DIRECTION	DESCRIPTION
	EIA-422
1	TX+	Output	Transmit Data (+)
2	TX-	Output	Transmit Data (-)
3	RX-	Input	Receive Data (-)
4	RX+	Input	Receive Data (+)

When connecting an EIA-422 device to the M24SII-V07 module using 4-wire Operation and bidirectional Printer Sharing Mode, the cable required to connect the two devices must have TX+ wired to RX+ (and vice versa) and TX- wired to RX- (and vice versa). Please see Figure

10below.

	M24SII-V07 Port		Equipment
	(EIA-422, 4-wire, bidirectional)		Connections
	RJ-11		RJ-11
	1	TX+	RX+
	2	TX-	RX-
	3	RX-	TX-
￿￿	4	RX+	TX+
	Figure 10: M24SII-V07 EIA-422 (4-wire) Connection