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DeviceNet Design
Inputs
3 discrete feedback signal of the position measuring system (positions S1 - S3)
1 discrete feedback signal of the external initiator (S4)
1 analog position signal in mm
supply via DeviceNet string (11 ... 25 V DC)
Switch level high signal
≥
5 V
Switch level low signal
≤
1.5 V
Outputs
3 solenoid valves
Power consumption
from the bus:
max. output 5 W, if all valves are switched (3 x type 6524 with 0.6 W each)
12.3.1. Total line length and maximum line length according to
DeviceNet specification
The bus line is a 4-core cable with additional shielding which must conform to the DeviceNet specification. The cable
transmits both information (data) and energy (power supply for low-power actuators and sensors).
The maximum total line length (sum of trunk lines and drop lines) of a network depends on the baud rate.
Baud rate
Maximum total line length*
1
Thick Cable*
2
Thin Cable*
2
125 kbaud
500 m
100 m for all baud rates
250 kbaud
250 m
500 kbaud
100 m
*
1
A
ccording to DeviceNet specification. If a different cable type is used, lower maximum values apply.
*
2
For cable designation and details - see DeviceNet specification
12.3.2. Drop line length
Baud rate
Length of the drop lines
Maximum length
Maximum total length of all drop lines in the
network
125 kbaud
6 m for all baud rates
156 m
250 kbaud
78 m
500 kbaud
39 m
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