Overview X1-X7

Connections table:

Terminal

Meaning

Connection

X1	1	Supply voltage +24V DC	Power supply
	2	Supply voltage +24V DC
	3	Power supply GND
	4	Power supply GND

X2 *1	1	TxD-b	COM1 serial interface RS-422/RS-485
	2	TxD-a
	3	RxD-b
	4	RxD-a
	5	TxD-b'
	6	TxD-a'
	7	RxD-b'
	8	RxD-a'
	9	TxD > Output	COM1 RS-232 serial DTE interface
	10	RxD < Input
	11	RTS > Output
	12	CTS < Input
	13	GND

X3 *1	1	TxD-b	COM2 serial interface RS-422/RS-485
	2	TxD-a
	3	RxD-b
	4	RxD-a
	5	TxD-b'
	6	TxD-a'
	7	RxD-b'
	8	RxD-a'
	9	TxD > Output	COM2 RS-232 serial DTE interface
	10	RxD < Input
	11	RTS > Output
	12	CTS < Input
	13	GND

USB interface, connection type A

USB0 Ex-i

X5	1	VCC	USB1 Ex-e
	2	USB -
	3	USB +
	4	GND

X6	1	VCC	USB2 Ex-i
	2	USB -
	3	USB +
	4	GND
	5	GND (from Rev. 1 onwards)

X7	1	VCC	USB3 Ex-e
	2	USB -
	3	USB +
	4	GND

*1)	Option, have to be ordered.

Please note that the COM interface may only be physically connected once!

Interconnection is provided either with a physical RS-232

or an RS-422/485 connection.

USB connections USB0 and USB2 as well as USB1 and USB3 are wired in parallel. The USB connections USB0 and USB2 as well as USB1 and USB3 must therefore not be used at the same time !

This does not apply to devices of HW Rev. 3, where four independent USB ports have been implemented.