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ROC800-Series Instruction Manual
1-8
General Information
Revised Jul-14
Communication Ports
and Modules
The ROC800 provides up to six communication ports (refer to
Chapter 5, Communications
). Three communication ports are built-in:
Local Operator Interface (LOI)
– Local Port EIA-232 (RS-232D).
Ethernet
– Comm1 Port for use with the DS800 Development Suite
Software.
EIA-232 (RS-232C)
– Comm2 Port for point-to-point asynchronous
serial communications.
Communication modules (which you install
only
in slots 1 [Comm3], 2
[Comm4], or 3 [Comm5] in the ROC800) provide additional ports for
communicating with a host computer or other devices. Modules include:
EIA-232 (RS-232C)
– Point-to-point asynchronous serial
communications include Data Terminal Ready (DTR) support,
Ready To Send (RTS) support, and radio power control.
EIA-422/EIA-485 (RS-422/RS-485)
– Point-to-point (EIA-422) or
multiple-point (EIA-485) asynchronous serial communications.
Multi-Variable Sensor (MVS)
– Interfaces with MVS Sensors (up
to two modules per ROC800).
Dial-up modem
– Communications over a telephone network
(14.4K V.42 bis with throughput up to 57.6K bps).
NRM
– Network Radio Module
Caution
The design of ROC800-Series communications and I/O modules
supports “hot-swapping” (replacing similar modules in the same slot)
and “hot-plugging” (inserting modules into an empty slot) while the
ROC800 is powered. However, it is a good safety practice with any
electrical device to first remove power before you make internal
connections. If you find it necessary to hot-swap or hot-plug a module,
first review the most current specification sheet for that module to
ensure both your safety and the integrity of data that module may
provide.
F
OUNDATION
™
Fieldbus
Interface
The F
OUNDATION
Fieldbus Interface (FFI) is a ROC800-based
solution that enables a ROC800 to support bi-directional multi-drop
digital communications between fieldbus devices.
While you can implement the FFI as a stand-alone device, you can also
install it as an integral part of the ROC827 housing, since the FFI is
based on a standard Series 2 EXP. However, the FFI does not expand
the I/O capability of the ROC827 beyond the 27 module-limit.
For technical information on the FFI, refer to the technical
specifications
ROC800:FFI
or the
F
OUNDATION
Fieldbus Interface
Instruction Manual
(Part Number D301461X012). For information
about the software you use to configure the FFI, refer to the
Field
Interface Configurator User Manual
(Part Number D301575X012).