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Appendix B. Troubleshooting tips
Appendix B.1. Connection Tips & Hints
When using the FieldServer as an N2 Client, make very sure that it is the only Client /
master on the N2 network. If there is another Client on the network there will be
communication conflicts. These will be reflected on the FieldServer as protocol errors.
Appendix B.2. Offline Behavior
When the Client node on the FieldServer goes offline, the corresponding data objects on the
FieldServer are also marked offline. If a client polls a virtual FieldServer node for this
particular data, therefore, an offline response will be returned by the FieldServer. A request
from an master device for a FieldServer to identify itself would be met by a valid response,
however. This could lead to confusion and status toggling. This can be addressed using
Responsible Map Descriptors and by configuring the virtual FieldServer using the
Offline_Method option. Please refer to the Configuration Manual for further information.
Appendix B.3. Tip on Overrides
It is important that there be only one device (including the slave device itself) updating a
point which is in overridden mode. The reason for this is that the value of the point could be
changed by an update from a non-Metasys Server before the override is released by the
Metasys Master. In this case, the FieldServer would respond to a poll from the Master with
this changed data.
- FS-8700-19 Metasys N2 1
- TABLE OF CONTENTS 2
- 1. Metasys N2 Description 3
- 3. Hardware Connections 5
- 4.4.3. Timing Parameters 13
- Function 14
- Starting location in Data 18
- Descriptor of length 256 can 19
- Appendix A. Advanced Topics 20
- RJ45 Female M odular Jack 25
- 12345678 25
- RJ45 Male Modular Jack 25
- Appendix D. Memory Maps 26
- Appendix E. Error Messages 50
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