Bosch Appliances XD Serial Interface, Terminal Block, Pin Assignment, 17 COM1, page, RS-232 mode

66 en AppendixVIP XD

8.5	Serial Interface
	Options for using the serial interface include transferring transparent data, controlling
	connected units or operating the unit with a terminal program.
	The serial interface supports the RS-232/RS-422/RS-485 transmission standards. The mode
	used depends on the current configuration (see Section 5.17 COM1, page 43). Connection is
	via the terminal block.

8.6	Terminal Block
	The terminal block has several contacts for:
	–	4 alarm inputs
	–	1 relay output
	–	Serial data transmission

Pin Assignment

The pin assignment of the serial interface depends on the interface mode used (see

Section 5.17 COM1, page 43).

Contact	RS-232 mode	RS-422 mode	RS-485 mode
CTS	CTS (clear to send)	RxD- (receive data minus)	Data-
RTS	RTS (ready to send)	TxD- (transmit data minus)
RXD	RxD (receive data)	RxD+ (receive data plus)	Data+
TXD	TxD (transmit data)	TxD+ (transmit data plus)
GND	GND (ground)	—	—

Contact	Function
IN1	Input alarm 1
IN2	Input alarm 2
IN3	Input alarm 3
IN4	Input alarm 4
GND	Ground
R	Relay Output
+	12 to 24 V DC (power supply)
–	Ground

Connect each alarm input to a ground contact (GND) when connecting alarm inputs.

DOC V4.0 2009.06 Installation and Operating Manual Bosch Security Systems