Nortec OnLine GSTC - Manual (Page 20)

16 | Troubleshooting
Table 5: Troubleshooting Communication Problems
Problem Solution
The NORTEC server
cannot read/write
any information to
any of the networked
humidifiers. Verify that the network connection is made and is connected properly.
Verify that firewall port 5222 is open to TCP traffic.
Verify that the correct network settings are being used. The OnLine module may need
to be restarted to load the new settings.
Check the ethernet link (if ethernet enabled) or serial link (if modem enabled)
communication LED's to determine if there is any network traffic being sent or
received by the OnLine module from the NORTEC server. Verify proper connections to
networked humidifiers.
Turn the OnLine module off for several seconds then switch it back on to reload the
control program. Allow for some time for the network variables to be polled.
The NORTEC server
network can see
some of the
networked
humidifiers but not
others. Ensure proper connections to the humidifiers.
Disconnect all of the humidifiers from the NORTEC OnLine module except for the unit
that is not responding to the network. Disconnect power to the OnLine module, wait a
moment, then reconnect power. Check Serial Link LED transmit/receive lights to see
if the module can talk to the humidifier.
Verify that each unit has a unique modbus address (no conflicts).
Spare Parts
Table 6: Spare Parts
Part Number Item Description
1509602 NORTEC Online Module - Dial-up
Configuration. Spare part for On-Line module with dial-up
settings.
1509603 NORTEC Online Module - GPRS Configuration. Spare part for On-Line module with dial-up
settings.
1509604 NORTEC Online Module - Static IP
Configuration. Spare part for On-Line module with wired
ethernet and static IP settings.
1509605 NORTEC Online Module - DHCP Configuration. Spare part for On-Line module with wired
ethernet and dynamic IP settings.
1509349 Communication Cable for OnLine module. Cable with RS-12 plug for On-Line module.