Siemens SIMATIC S5 Manual page 86

Operation
BBn
Connector
casing
Fig, 3/7 Connection of power units with 5 V differential inputs to connectors X4/X5/X6 of the
To reset the power unit, the module outputs a high-active pulse for each axis, If a low-active
pulse is required, you must change over the connections at pins 1 and 2 of the connector. The
polarity of the clock pulse and direction level can be programmed.
Connecting power units with 5V optocoupler inputs
On the module, you must make the same jumper setting as for 5 V differential signals:
jumper X30/2-4 inserted (5 V)
jumper X31/2-3 inserted (OV)
You must connect the power unit as shown in Fig. 3/8.
Connecting power units with 24V optocoupler inputs
You must make the following jumper setting on the module:
jumper X30/3-4 is inserted (24 V)
jumper X31/1 -2 is inserted (L-)
You must connect the power unit as shown Fr Fig. 3/8.
3-12
.
= twisted cable