Advantech RS-485 user manual Shielding, Cable Shield

Appendix F

Single Point Grounding

ADAM	ADAM	ADAM	ADAM	+24 V
4013	4014	4017	4021
				Power
				Supply
+16V	+18V	+20V	+22V
+22V	+22V	+22V	+22V
ADAM	ADAM	ADAM	ADAM
4013	4014	4017	4021	+24 V
				Power
				Supply

More cable, but more stable system.

Figure F-8: Single point groundinF. (2)

Above diagram shows you that single point grounding system will be a more stable system. Actually, when you use the thin cable powering those devices, the end device will get lower power. The thin cable will consume the energy.

F.2 Shielding

2.1 Cable Shield

Figure F-9: Single isolated cable

ADAM-5000 F-9