100
en | Appendix
VOT-320
DOC | V4.5 | 2010.09
Installation and Operating Manual
Bosch Sicherheitssysteme GmbH
Serial interface (upper 6-pin terminal block)
The pin assignment of the serial interface depends on the interface mode used (see
Section 5.33 Advanced Mode: COM1, page 68
).
Relay and alarm (lower 6-pin terminal block)
Connect each alarm input to a ground contact (GND) on the upper 6-pin terminal block when
connecting alarm inputs.
Pin No.
Contact
RS-232 mode
RS-422 mode
RS-485 mode
1
RXD
RxD (receive data)
RxD+ (receive data plus)
Data+
2
CTS
CTS (clear to send)
RxD– (receive data minus)
Data–
3
RTS
RTS
TxD+ (transmit data plus)
Data+
4
TXD
TxD (transmit data)
TxD– (transmit data minus)
Data–
5
GND
GND (ground)
—
—
6
GND
—
—
—
Pin No.
Contact
Function
1
R1
Relay output 1
2
R1
Relay output 1
3
R2
Relay output 2
4
R2
Relay output 2
5
IN1
Input alarm 1
6
IN2
Input alarm 2
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