(19)

(11)

EP 0 763 223 A1

(12)

(43) Date of publication: 19.03.1997 Bulletin 1997/12 (21) Application number: 95913233.0 (22) Date of filing: 28.03.1995

(51) International Patent Classification (IPC):  G05D 23/ 19( . ) H04Q 9/ 16( . ) (86) International application number: PCT/GB1995/000700 (87) International publication number: WO 1995/026524 (05.10.1995 Gazette 1995/42)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 29.03.1994 GB 19940006225 (71) Applicant: Honeywell Control Systems Ltd. Bracknell, Berkshire RG12 1EB (GB)	(72) Inventor: MACKIE, Alastair, David Motherwell ML1 5SF (GB) (74) Representative: Fox-Male, Nicholas Vincent Humbert  Honeywell Control Systems Limited, Honeywell House, Arlington Business Park Bracknell, Berkshire RG12 1EB Bracknell, Berkshire RG12 1EB (GB)