Communication Interface Devicenet; Bus Line With Copper Cable; Line Routing, Shield And Measures To Combat Interference Voltage; General Information On Line Routing - DEUTSCHMANN AUTOMATION UNIGATE CX-CANopen - DeviceNet Manual

Deutschmann Automation GmbH & Co. KG

14 Communication interface DeviceNet

14.1 Bus line with copper cable

This interface is located on the module in the form of a 5-pin screw-plug-connector on the lower
side of the housing.
•
Plug the DeviceNet connecting plug onto the socket labelled "DeviceNet".
• If the module is located at the start or end of the DeviceNet line, you must switch on the bus
terminating resistor integrated in the gateway. In order to do this, slide the sliding switch to the
position labelled ...on...
• If the module is not located at the start or at the end, you must set the sliding switch to position
"off".

14.2 Line routing, shield and measures to combat interference voltage

This chapter deals with line routing in the case of bus, signal and power supply lines, with the aim
of ensuring an EMC-compliant design of your system.

14.2.1 General information on line routing

- Inside and outside of cabinets
In order to achieve EMC-compliant routing of the lines, it is advisable to split the lines into the fol-
lowing line groups and to lay these groups separately.
 Group A:
• shielded bus and data lines (e. g. for ProfibusDP, RS232C and printers etc.)
• shielded analogue lines
• unshielded lines for DC voltages 60 V
• unshielded lines for AC voltage  25 V
• coaxial lines for monitors
 Group B: • unshielded lines for DC voltages  60 V and 400 V
• unshielded lines for AC voltage  24 V and  400 V
 Group C:
• unshielded lines for DC voltages > 400 V
The table below allows you to read off the conditions for laying the line groups on the basis of the
combination of the individual groups.
Group A
Group A 1
Group B 2
Group C 3
Table 3: Line laying instructions as a function of the combination of line groups
1) Lines may be laid in common bunches or cable ducts.
2) Lines must be laid in separate bunches or cable ducts (without minimum clearance).
3) Lines must be laid in separate bunches or cable ducts inside cabinets but on separate cable
racks with at least 10 cm clearance outside of cabinets but inside buildings.

14.2.1.1 Shielding of lines

Shielding is intended to weaken (attenuate) magnetic, electrical or electromagnetic interference
fields.
25.9.20 Fieldbus-Gateway UNIGATE
Group B Group C
2 3
1 3
3 1
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CX C4Map - DeviceNet V. 1.0
Communication interface DeviceNet
41