HBK CB1010, Руководство по эксплуатации

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13
CANHEAD
BUS CONFIGURATION
Maximum configuration
per ML74B max. 12 CANHEADs, corresponding to 120 measuring points
Per
MGCplus system
250 e.g. 500 measuring points
1)
1)
The maximum number of 256 channels per MGCplus system must not be exceeded. The number of
channels may be distributed among several ML74B. The maximum number of channels per CP42 and
CP52 is 256, with up to 512 channels possible if a CP52 is combined with an NT040 power supply.
5.2 Device Net specifications
More detailed specifications for Device Net (bus topology, drop lines, etc.), can be found
on the Internet site www.odva.org
→
Devicenet
→
Planning and Installation Manual
Notice
The maximum CAN bus line length must not exceed 250 m at the 250^kBaud setting and
100 m at the 500^kBaud setting,
see also technical Datasheet.
A drop line must be no longer than 15 m (but if possible, drop lines should be avoided).
TR TR
Power
Supply
TR
trunk line
drop lines
device or node
terminating resistor
Fig. 5.2 Line bus and drop lines (example from the DeviceNet Manual)