Operational Checklist - Omron DEVICENET Operation Manual

Operational Checklist

2-6

Operational Checklist

Category
Network configura- Connectors
tion and wiring
Terminators
Max. network
length
Branch line
length
Cables
Shield wire
ground
Other
Devices supplied by Power supply
communications capacity
power supply
Isolation
Item
Are the connectors and cables to the Master connected cor-
rectly? (Do the wire colors match the colors next to the Mas-
ter's DeviceNet connector?)
Are the connectors and cables to the Slaves connected cor-
rectly? (Do the wire colors match the colors next to the Slaves'
DeviceNet connectors?)
Are the connectors securely connected?
Is there a possibility that the cable connectors will be pulled
out because of the cable weight?
If the connectors have attachment screws or mounting brack-
ets, are the screws/brackets tightened properly?
Have Terminating Resistors been connected at both ends of
the trunk line?
Are the specified Terminating Resistors being used?
If a T-branch Tap is being terminated, is the Terminating
Resistor seated properly in the T-branch Tap's socket?
Is the length of the network within specifications?
Are all branch lines 6 m or shorter?
Is the total branch line length within specifications?
Can the cable supply the current required by all of the nodes
that are connected?
Is the proper DeviceNet cable being used?
Are the cables separated from any power or high-voltage
lines?
Have the cables been handled carefully, without excessive
force?
Is the network be grounded in only one location?
Is a separate ground line used? (Is the ground line separated
from any power line ground?)
Are there any devices in the network that are not DeviceNet
products?
Has the power supply requirement been calculated using
each node's current consumption?
Can the power supply handle the inrush current when the sys-
tem is started?
Is the DC output isolated from the AC input in the power sup-
ply?
Check
Section 2-6
Result
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
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Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
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