HEIDENHAIN MANUALplus 620 Technical Manual page 237

3.17 PROFIBUS Connection
Main computer X121
D-sub Assignment
connctn.
(female)
9-pin
1 Do not assign
2 Do not assign
3 B line
4 RTS
(signal type:
TTL)
5 GND
6 +5 V
7 Do not assign
8 A line
9 Do not assign
Housing External shield Housing
January 2012
Pin layout on X121 of the MC main computer or IPC and on X1 of the PLB 550
PROFIBUS slave
Connecting cable 515 845-01
D-sub
cnnctr.
(male)
9-pin
1 –
2 –
3 B line
4 –
5 –
6 –
7 –
8 A line
9 –
External shield
All signals on the PL 550 are electrically isolated.
All signals are electrically isolated at X121 of the MC 6xxx main computer or
the IPC 6xxx.
The +5 V and GND pins supply the terminating resistor in the connector.
Note
For more information about PROFIBUS on HEIDENHAIN controls, refer to
the documentation about the IOconfig software for PCs.
3.17 PROFIBUS Connection
PLB 550 X1
D-sub X1 D-sub Assignment
cnnctr. cnnctn.
(male) (female)
9-pin 9-pin
1 1 Do not assign
2 2 Do not assign
3 3 B line
4 4 RTS
(signal type:
TTL)
5 5 GND
6 6 +5 V
7 7 Do not assign
8 8 A line
9 9 Do not assign
Housing Housing External shield
237