FW-1
An ‘open’ FIELDBUS comparison
V B F P S D
VEHICLE AUTOMATION BUILDING AUTOMATION FACTORY AUTOMATION PROCESS INDUSTRY SMART INSTRUMENTATION DATA COMMUNICATION
US
FIELDB
OPEN
FOUNDATIONTM Fieldbus PROFIBUS ControlNET Modbus INTERBUS Ethernet WorldFIP LONWORKS CAN HART AS -
*4 ® ® *4 ® ® Interface
H1 *1 H2 *1 H2 *1 H2 *1 (DEVICENET)
See bus DP *2 FMS PA 10Base-5
key (SDS) *3
powered
above
Typical
P S P P P P P S P P P P D P S P P V P
P S
Applications F F F F B F F B F B F
F F B F B F
To 1.5M Not 31.25k, 300 to
Data Rates
31.25k 1.0M 1.0M 2.5M & 12M 500k 31.25k 5M specified 500k 10M 1M 1.25M To 1M 1200 167k
bits/s (1.2k -115.2k & 2.5M
typ.)
Comms. Single/ Single/ Single/ Single/ Master Master Master Producer/ Master Master Master Producer/ Master Producer/ Master Master
Multi- Multi- Multi- Multi- /Slave, /Slave, /Slave, Consumer /Slave /Slave /Slave, Consumer /Slave, Consumer, /Slave /Slave
technique
Master Master Master Master Peer to Peer Peer to Peer Peer to Peer Peer to Peer Peer to Peer Peer to Peer
Media access Token Token Token Token Token Token Token CTDMA Token CSMA/CD Bus Predictive CSMA/CD Cyclic
Passing Passing Passing Passing Passing Passing Passing *9 Passing None *5 Arbiter Media /NDA *5 None polling
algorithm
Access
opto opto
Media opto
supported Planned Planned Planned opto opto opto
opto opto
240 per 240 per 240 per 240 per 211, or 229
*10
Max. No. of segment, segment, segment, segment, 127 per 127 per 256 per 99 per 247 per 256 400 per 256 per 32,768 per in extended 15 31 per
nodes or 216 or 216 or 216 or 216 network network network link network stations segment network domain address per loop network
per system per system per system per system mode
*6
Deterministic? – – – – – – – –
Intrinsic Safety? – – – – – – – – – –
Bus powered? – – – – – – – – –
*7
ASICs available? Planned Planned Planned Planned – Partial
Physical layer IEC/ISA/FF See Not Unbalanced IEC/ISA/FF See Balanced 4-20mA pair Balanced
IEC 1158 IEC 1158 IEC 1158 IEC 1158 RS485 RS485 IEC 1158-2 * 8 a) Specified RS485 voltage IEC 1158-2 * 8 a), differential (f.s.k. current differential
standard b), c) & d) voltage modulation) voltage
IEC 1158 IEC 1158 IEC 1158 IEC 1158 EN 50170 EN 50170 DIN 19245 BSI draft Modicon IEE802.3 EN 50170 LonMark HART Protocol IEC947-5-2/D
Applicable ISA S50 ISA S50 ISA S50 ISA S50 (Part 2) (Part 2) standard Protocol DIN E 19258 ISO8802.3 (Part 3) Interoperability ISO 11898 Specification EN 60 947
Standards PI-MBUS-300 (10Base-5) Association Rev. 5.1 DIN VDE
DIN 19245 DIN 19245 pr(EN 50254) Rev.E pr(EN 50254) Guidelines Physical layer 0660/208
Rev. 8.0
* Notes User Groups (and their locations)
1. H1 and H2 are FOUNDATION Fieldbus terms not used 8. Various interfaces and modes of communication: Fieldbus Foundation WorldFIP Europe Hq AS-Interface
by the IEC. a) Node-to-line transformer isolation, with differential Tel: +1 512 794 8890 USA Tel: +33 (0)1 46 11 44 30 F Tel: +49 (0) 2174 40756 D
Manchester encoding Fax: +1 512 794 8893 Fax: +33 (0)1 46 11 44 31 Fax: +49 (0) 2174 41571
2. Profibus - DP also has an extended command set called DPV1,
b) RS-485 Twisted Pair web page: www.fieldbus.com web page: www.worldfip.org web page: www.as-interface.com
Extensions to EN 50170, Version 1.0, November 1996.
c) Single ended for Radio & Fibre operation
3. DEVICENET and SDS are application layer utilities d) Power line (i.e. local 'mains') interface LonMark Interoperability Assoc. Open DeviceNet Vendor Association HART Communication Foundation
that use CAN for the physical layer. Tel: +1 415 855 7400 Tel: +1 954 340 5412 Tel: +1 512 794 0369
9. CTDMA: Concurrent Time Domain, Multiple Access. USA USA USA
Fax: +1 415 856 6153 Fax: +1 954 340 5413 Fax: +1 512 794 3904
4. Profibus (excluding PA) and WorldFIP, together with web page: www.lonmark.org web page: www.industry.net/ web page: www.fieldbus.com/hart
10. This is the number of addressable nodes - the number
P-Net, are formalised into European Standard EN 50170. web page: www.echelon.com ODVA web page: www.ccsi.com/hart
of physical nodes may be significantly smaller.
5. CSMA/CD: Carrier Sense Multiple Access with Collision
Detection, (NDA: Non-Destructive Bitwise Arbitration) Symbols Profibus Nutzer Organisation INTERBUS-S Club CAN in Automation
Twisted Optical Tel: +49 (0) 7219 658590 D
Tel: +49 (0) 631 79424 D Tel: +49 (0) 9131 601091 D
6. Deterministic: The ability to perform predefined tasks opto
Fax: +49 (0) 7219 658589 Fax: +49 (0) 631 97658 Fax: +49 (0) 9131 601092
Pair Fibre
at precise times. web page: www.profibus.com web page: www.ibsclub.com web page: www.can-cia.de
7. ASIC: Application Specific Integrated Circuit Co-axial Radio SDS has no user group, but e-mail may be directed to sds@po2.il50.micro.honeywell.com
Cable Propagation ControlNET now has an independent ContolNET User Association
The information on this chart is inevitably subject to change, but was believed correct at the date of issue. Printed in EU (8/97)
The MTL Instruments Group plc Worldwide USA: +1 800 835 7075 (Toll free), +1 703 361 0111, India: +91 (0)44 496 0552 Also
Power Court, Luton, Bedfordshire, England LU1 3JJ MTL contacts: Canada: +1 905 840 7850 Germany: +49 (0)2131 168016
Western Australia: +61 (0)89 455 2994 France: +33 (0)4 78 64 98 32
Telephone: +44 (0)1582 723633 Fax: +44 (0)1582 422283 Singapore: +65 743 8669 The Netherlands: +31 (0)26 3622030 Surge protection
E-mail: enquiry@mtl-inst.com Web site: http://www.mtl-inst.com Japan: +81 (0)3 5420 1281 Belgium: +32 (0)9 242 8844 for your network
