Connecting cables
B.2 20 mA TTY interface on the CP 341-20mA-TTY
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
228 Manual, 09/2008, A5E02191071-01
B.2 20 mA TTY interface on the CP 341-20mA-TTY
Pin assignment
The table below shows the pin assignment for the 9-pin sub D female connector in the front
panel of the CP 341-20mA-TTY.
Table B- 2 Pin assignment for the 9-pin sub D female connector of the integrated interface of the CP 341-20mA-TTY
Female on
CP 341-20mA-TTY
*
Pin Designation Input/output Meaning
1 TxD- Output Transmit data
2 20 mA - Input 24 V ground
3 20 mA + (I
1
) Output 20mA current generator 1
4 20 mA + (I
2
) Output 20mA current generator 2
5 RxD + Input Receive data +
6 -
7 -
8 RxD - Output Receive data -
5
4
3
2
1
6
7
8
9
9 TxD + Input Transmit data +
* View from the front
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