VIPA CP 240 RS232, Руководство пользователя, Страница: 53 / 148

Manual VIPA System 200V Chapter 4 CP 240 - serial
HB97E - CP - Rev. 11/30 4-7
•
Logical states represented by voltage differences between the two cores
of a twisted pair cable
•
Serial bus connection in two-wire technology using half duplex mode
•
High noise immunity
•
Connection of up to 32 stations
•
Data transfer up to 500m
•
Data transfer rate up to 115.2kbit/s
9pin D-type jack
Pin Designation Input/Output Signal description
1 n.c. ---
2 n.c. ---
3 RxD/TxD-P (Line B) Input/Output Receive/Send data
4 RTS Output Request to send
5 M5V Output Ground isolated
6 P5V Output 5V isolated
7 n.c. ---
8 RxD/TxD-N (Line A) Input/Output Receive/Send data
5
4
3
2
1
9
8
7
6
9 n.c. ---
•
Logical conditions as voltage difference between 2 twisted lines
•
Serial bus connection
Full-duplex: Four-wire operation (RS422)
Half-duplex: Two-wire operation (RS485)
•
Line length: 250m at 115.2kbit/s ... 1200m at 19.2kbit/s
•
Data transfer rate up to 115.2kbit/s
9pin D-type jack
Pin Designation Input/Output Signal description
1 n.c. ---
2 TxD-P (Line B) Output Send data (RS422)
3 RxD-P (Line B)
RxD/TxD-P (Line B) Input
Input/Output Receive data (RS422)
Receive/Send data (RS485)
4 RTS Output Request to send
5 M5V Output Ground isolated
6 P5V Output 5V isolated
7 TxD-N (Line A) Output Send data (RS422)
8 RxD-N (Line A)
RxD/TxD-N (Line A) Input
Input/Output Receive data (RS422)
Receive/Send data (RS485)
5
4
3
2
1
9
8
7
6
9 n.c. ---
Note!
Never connect the shield of the cable with M5V (Pin 5), as this could
destroy the interface!
RS485 interface
RS422/485-
Schnittstelle