Siemens SIMATIC NET PS598-1 Compact Operating Instructions page 14

Connection
NOTICE
Reliable grounding
Reliable grounding of the devices mounted in the rack must be guaranteed. This
applies, in particular, to power supply cables that are not connected directly to the
power supply circuit. With the PS598-1, the IEC power connector (IEC 60320-1)
provides the connection to protective earth.
Pin assignment of the X2 socket on the front
Contact
L
M
M
L
12
Assignment
+24 VDC
Ground
Ground
+24 VDC
Power supply unit PS598-1 for SCALANCE XR500
A5E03275848-04, 05/2013