H D 2 - D M - A / D M - A M
Application Engineering HD2-DM-A
Subject to reasonable modifications due to technical advances.
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5.3.2
Buildup the Diagnostic Bus
The Diagnostic Bus is the connection between the different Diagnostic
Modules /Fieldbus Power Hub motherboards in the field cabinet.
The Diagnostic Bus between the motherboards is built up with a 2-line
wire e.g. use the additionally ACC-MB-HDC link cable. The maximum
length of one complete Diagnostic Bus must not exceed 30 meter and
include more than 31 Diagnostic Modules.
•
Figure 5.4: Stylized view on the Diagnostic Bus
•
Communication problems!
Within EMC sensitive areas use shielded wires for the Diagnostic Bus.
Connect the cable shield to ground on the side of the Com Port Convert-
er.
Converter
Diagnostic
Module 1
Diagnostic
Module 31
Diagnostic
Module 3
Diagnostic
Module 2
Diagnostic Bus Line
max. 30 m