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DESCRIPTION OF HART INTERFACE
9
105
SMARTLINE® RM60 (FMCW)
www.honeywell.com/ps
34-VF-25-31 iss.4 GLO December 15 US
9.1 General description
The HART
®
Protocol is an open digital communication protocol for industry. It is free to use by
anyone. It is included in the software embedded in signal converters of HART-compatible
devices.
There are 2 classes of devices which support the HART
®
Protocol: operating devices and field
devices. There are 2 classes of operating devices (Master): PC-supported workstations (Primary
Master) and manual control units (Secondary Master). These can be used in control centres and
other locations. HART
®
field devices include sensors, converters and actuators. Field devices
include 2-wire and 4-wire devices, and also intrinsically-safe versions for use in hazardous
areas.
There are 2 primary operation modes for HART-compatible devices: point-to-point mode and
multi-drop mode.
If the device is used in point-to-point mode, the HART
®
Protocol uses the Bell 202 Frequency
Shift Keying (FSK) standard to put a digital signal on top of the 4...20 mA signal. The connected
device sends and receives digital signals that agree with the HART
®
Protocol, and sends analog
signals at the same time. Only 1 device can be connected to the signal cable.
If the device is used in multi-drop mode, the network only uses a digital signal that agrees with
the HART
®
Protocol. The loop current is set to 4 mA. You can connect a maximum of 15 devices
to the signal cable.
An FSK or HART
®
modem is included in field devices and manual control units. It is necessary to
have an external modem for PC-supported workstations. The external modem is connected to
the serial interface.
9.2 Software history
INFORMATION!
In the table below, "x" is a placeholder for possible multi-digit alphanumeric combinations,
depending on the available version.
Release date
Devices
HART
®
Device Revision
DD Revision
2010-11
All revisions
1
1
Содержание SmartLine RM60
Страница 4: ...4 www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ABOUT THIS DOCUMENT SMARTLINE RM60 FMCW ...
Страница 8: ...CONTENTS 8 www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US SMARTLINE RM60 FMCW ...
Страница 16: ...1 SAFETY INSTRUCTIONS 16 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 34: ...3 INSTALLATION 34 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 40: ...4 ELECTRICAL CONNECTIONS 40 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 76: ...6 OPERATION 76 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 86: ...7 SERVICE 86 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 104: ...8 TECHNICAL DATA 104 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 114: ...9 DESCRIPTION OF HART INTERFACE 114 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 126: ...10 APPENDIX 126 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...
Страница 127: ...APPENDIX 10 127 SMARTLINE RM60 FMCW www honeywell com ps 34 VF 25 31 iss 4 GLO December 15 US ...