Bosch VIPX1 Operation Manual - Page 128
Pin assignment, Contact, RS232 function, RS422/485 function
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EN | 128 Installation and Operating Manual | VIP X1 Pin assignment The pin assignment for the serial interface depends on the interface mode that is used (see page 84): Contact IN1 IN2 IN3 IN4 GND GND R (top) R (bottom) CTS RTS RXD TXD + - RS232 function Alarm input 1 Alarm input 2 Alarm input 3 Alarm input 4 GND (ground) GND (ground) Relay Relay CTS (clear to send) RTS (ready to send) RxD (receive data) TxD (transmit data) 12 V (power supply) GND (ground) RS422/485 function Alarm input 1 Alarm input 2 Alarm input 3 Alarm input 4 GND (ground) GND (ground) Relay Relay RxD- (receive data minus) TxD- (transmit data minus) RxD+ (receive data plus) TxD+ (transmit data plus) 12 V (power supply) GND (ground) To operate the alarm inputs, connect each alarm input to a ground contact (GND) via a trigger contact. Appendix Bosch Security Systems | 2006-12 | V2.5