CDN36X User Manual
revision 1.30
MKS Instruments, Inc.
D.I.P. Products Group
90
Chapter 8 – Troubleshooting
Problem Possible
Cause
DeviceNet Configuration Program
does not recognize Gateway.
•
Register Gateway EDS file with Configuration Program.
DeviceNet Configuration Program
does not recognize Gateway after
loading EDS file.
•
Check Major and Minor Revisions for Gateway and EDS file, to see if you have
correct EDS file for your Gateway's firmware version.
Gateway does not appear on
DeviceNet network.
•
Check wiring and cable connections.
•
Check DeviceNet power supply voltage.
•
Make sure Gateway baud rate matches network baud rate.
•
Verify Gateway baud rate is set from rotary switches or retentive memory value.
•
Make sure Gateway MAC ID is not used by another device.
After setting Gateway MAC ID,
DeviceNet Master does not
recognize Gateway.
•
Disconnect Gateway from network before changing MAC ID.
•
Make sure Gateway MAC ID is not used by another device.
•
Verify Gateway MAC ID is set from rotary switches or retentive memory value.
•
Verify DeviceNet baud rate.
NET
LED is flashing red.
•
Gateway is removed from DeviceNet Master scanlist or network. Power cycle
Gateway to reset.
NET
LED is solid red.
•
Make sure Gateway MAC ID is not used by another device. Possible DeviceNet
network failure.
NET
LED is off.
•
Check wiring and cable connections.
•
Check DeviceNet power supply voltage.
•
Make sure Gateway baud rate matches network baud rate.
•
Verify Gateway baud rate is set from rotary switches or retentive memory value.
MOD
LED is flashing or solid red.
•
Gateway has failed. Cycle power to reset. Replace Gateway if necessary.
RX
LED does not flash green when
data is sent to the Gateway.
•
If Sync Enabled, make sure Receive Toggle and Receive Acknowledge bits are
being toggled. If application does not toggle Receive Acknowledge, Gateway
will not receive data. Verify data is being received in Receive Data.
•
If Sync Enabled is disabled, verify data is being received in Receive Data.
•
Verify source device is transmitting data to Gateway.
RX
LED is solid red after Gateway
receives data.
•
Check Serial Status for RX buffer Overflow or Parity Error. Reset Gateway or
clear Serial Status error bit if necessary.
•
Make sure parity is set to match transmitting device.
TX
LED is solid red after receiving
data from DeviceNet Master.
•
Ceck Serial Status for TX buffer Overflow or Parity Error. Reset Gateway or
clear Serial Status error bit if necessary.
•
Make sure parity is set to match receiving device configuration.
TX
LED does not flash green when
Gateway should be transmitting
data.
•
Make sure Transmit Toggle is being toggled. If applicatoin does not toggle
Transmit Toggle, Gateway will not transmit data.
•
Verify data is being saved in Transmit Data.
1747-SDN Scanner displays error
code 77.
•
Gateway I/O Produce Size and/or I/O Consume Size value do not match 1747-
SDN I/O Rx/Tx settings.