WAGO 750 Manual page 21

WAGO I/O System 750 Device Description 21
753-661/000-004 4FDI 24V PROFIsafe
Use supply modules for ground (earth)!
The I/O module has no power jumper contacts for receiving and transmitting the
earth potential. Use a supply module when an earth potential is needed for the
subsequent I/O modules.
Observe the information on the power supply concept!
Detailed information and examples for supplying F I/O modules is available in the
section "Connect Devices" > ... > "Power Supply Concept".
Manual
Version 1.0.0, valid from HW/SW Version 01/01