Chapter 2 Hardware description
Manual VIPA CPU 21x
2-20
HB103E - Rev. 05/45
Additional to the components described before, the CPU 21x with order no.
21x-2BS12 has an RS232C interface and the CPU 21x with order no.
21x-2BS32 an RS485 interface.
The LEDs are located in the left half of the front panel and they are used
for diagnostic purposes. The following table shows the color and the
significance of these LEDs.
Name
Color
Description
Rx
green
Interface receive data
Tx
green
Interface transmit data
Via 9pin jack, you may establish a serial RS232C point-to-point connection.
The pin assignment of this interface is as shown:
9pin plug
(
CPU 21x-2BS12)
Pin
Assignment
1 CD-
2 RxD
3 TxD
4 DTR-
5 GND
6 DSR-
7 RTS-
8 CTS-
9 RI-
Via 9pin slot, you may establish a serial RS485 bus connection. The pin
assignment of this interface is as shown:
9pin jack
(
CPU 21x-2BS32)
Pin
Assignment
1 n.c.
2 n.c.
3
RxD/TxD-P (Line B)
4 RTS
5 M5V
6 P5V
7 n.c.
8
RxD/TxD-N (Line A)
9 n.c.
CPU 11xSER-1
LEDs
RS232C interface
RS485 interface
1
2
3
4
5
6
7
8
9
5
4
3
2
1
9
8
7
6
Summary of Contents for CPU 21 Series
Page 1: ...Manual VIPA CPU 21x Order No VIPA HB103E Rev 05 45 ...
Page 2: ...Lerrzeichen ...
Page 6: ...About this Manual Manual VIPA CPU 21x Subject to change to cater for technical progress ...
Page 10: ...Contents Manual VIPA CPU 21x iv HB103E Rev 05 45 ...
Page 30: ...Chapter 1 Principles Manual VIPA CPU 21x 1 18 HB103E Rev 05 45 ...
Page 58: ...Chapter 2 Hardware description Manual VIPA CPU 21x 2 28 HB103E Rev 05 45 ...
Page 80: ...Chapter 3 Deployment CPU 21x Manual VIPA CPU 21x 3 22 HB103E Rev 05 45 ...
Page 178: ...Chapter 5 Deployment CPU 21x 2BT02 with H1 TCP IP Manual VIPA CPU 21x 5 48 HB103E Rev 05 45 ...