Advantech ADAM-5510/P31 Manual page 197

Besides, following tips just for your reference.
• The shield of cable can't be used for signal ground.
The shield is just designed for adhering noise, so the environment
noise will couple and interfere your system when you use the shield as
signal ground.
• The density of shield is the higher the better, especially for commu-
nication network.
• Use double isolated cable for communication network / AI / AO.
• Both sides of shields should be connected to their frame while inside
the device. (for EMI consideration)
• Don't strip off too long of plastic cover for soldering.
Never stripping too long of the plastic cable cover.
* Cascade those shields together by Soldering
Connect the shield to Frame-Ground of DC Power Supply.
ADAM ADAM
4520 4013
RS-232
ADAM ADAM
4017 4021
Terminal Block
+24V
Power
Supply