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GEMÜ 1242
DeviceNet
Electrical connection
10.2 DeviceNet, ordering option Fieldbus, code DN
DANGER
Danger of explosion!
▶
Risk of injury or death!
●
Do not connect or disconnect the device until the power has been switched off or the area has been classi-
fied as non-hazardous.
●
The standard version of the product (without special function X or Y) must not be used in potentially explos-
ive zones.
DANGER
Danger of explosion due to sparking
▶
Risk of severe injury or death.
●
Never disconnect the connection cables when live.
10.2.1 Net topology - DeviceNet system
To avoid malfunction the trunk cable is fitted with resistors on both sides. The drop cables do not require bus ends.
V+
V-
CAN_H
120 Ω
1/4 W
CAN_L
Shield
Protective
earth
Protective
earth
Drop cable
120 Ω
1/4 W
Trunk cable
Maximum cable length
Baud rate [kBaud]
Trunk cable
Drop cable
Thick cable
Thin cable
Max. cable length per
drop cable
Max. drop cable accu-
mulated length
125
500 m
100 m
6 m
156 m
250
250 m
100 m
6 m
78 m
500
100 m
100 m
6 m
39 m
