ROC800-Series Instruction Manual
5-14 Communications Revised July-2017
Notes:
If you are installing a modem module, it is recommended that you
install a surge protector between the RJ-11 jack and the outside line.
The dial-up modem is not hot-swappable or hot-pluggable. When
installing a dial-up modem module, you must remove power from
the ROC800.
5.10 Multi-Variable Sensor (MVS) Interface Module
The Multi-Variable Sensor (MVS) module provides an interface to a
sensor that supplies differential pressure, static pressure, and
temperature inputs to the ROC827 for orifice flow calculation.
The enhanced design of the MVS I/O module (shown on the right side
of Figure 5-6) enables you to place it in any available slot on the
ROC800. In all other ways the two modules are identical.
Figure 5-6. MVS I/O Module
For further technical information about the MVS or MVS I/O modules,
see the description of the MVS I/O module in Chapter 4.
5.11 Network Radio Module (NRM)
The Network Radio Module (NRM) is an integral part of the Distributed
RTU Network and allows ROC800-Series (ROC800) to communicate
wirelessly. It has the ability to broadcast and detect information from
other RTUs for easier and faster interconnection and communication
setup.
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