Hardware manual PCD1.M2220-C15 │ Document 27-640 – Version ENG03 │ 2020-03-25
Saia-Burgess Controls AG
Symbols
Appendix
A-1
A
A Appendix
A.1 Symbols
A.1.1
Note:
In the operating instructions, this symbol indicates further information in these instruc-
tions or in other instructions or technical documents. A direct link to these documents is
generally not provided.
Instructions with this character must always be complied with.
A.1.2
Connection descriptions
Symbol Description
Function
GND
ground
D
DGND
digital ground
A
AGND
analogue ground
S
SGND
signal ground
earth
a, b, …
alphanumeric index by different grounds