Troubleshooting
The following checklist has been provided to assist in the analysis and repair of potential trouble
situations with the fieldbus interface. If a situation occurs that is not described in this list, contact
AccuWeb for assistance.
Problem
Solution
Host is not communicating with the device (DeviceNet)
Check items 1-6 and 10 in the
table below.
Host is not communicating with the device (ControlNet)
Check items 1, 4, 7, and 10 in
the table below.
Host is not communicating with the device (Modbus Plus)
Check items 1, 4, 8, 9, and 10
in the table below.
Item
Description / Repair Procedure
Bad cable connection.
If the LED indicators are not working, check the interface
cable and replace if bad.
1
Missing terminating resistor.
Consult the Installation section of this manual (page
2
103) for more information on the terminating resistor.
Missing 24 VDC power supply
. Check that supply power is present between
terminals 1 and 5.
3
Card has failed.
Check the watchdog LED indicator.
4
Incorrect address setting.
DIP switch positions 3-8 must be set to the correct
address for the node. Consult the Installation section of this manual (page
5
103) for
more information on the address setting.
Incorrect baud rate setting.
DIP switch positions 1 and 2 must be set to the correct
baud rate for the network. Consult the Installation section of this manual (page
6
103) for
more information on the baud rate setting.
Incorrect address setting.
Rotary switch positions must be set to the correct address
for the node. Consult the Installation section of this manual (page
7
103) for more
information on the address setting.
Incorrect address setting.
DIP switch S1 positions 1-6 must be set to the correct
address for the node. Consult the Installation section of this manual (page
8
103) for
more information on the address setting.
Incorrect baud rate setting.
DIP switch S2 positions 1-6 must be set to the correct
baud rate for the network. Consult the Installation section of this manual (page
9
103) for
more information on the baud rate setting.
Incorrect network configuration.
The
In
and
Out
data lengths set during initialization
of the network must be equal to the lengths set during initialization of the fieldbus card.
10
Fieldbus Interface
116
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Содержание MICRO 4000 NET
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