Ident-I • IRI-KHD2-4HB5 / IRI-KHA6-4HB5
Operation with the INTERBUS
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
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1
28
7.2.3
Information fields
By placing bits ST1 ... ST4 in control byte 2, the data fields of the corresponding read
heads are replaced with an information field. Information fields are used for failure di-
agnostics as well as for reading out the unit identification, software version and set
parameters. The selection of an information field is made using the sub-address
SUB.
Failure diagnostics; SUB = 0 ... 3
After setting the sub-address SUB = 0 ... 3, the information field is output with failure
diagnostics (see also: "Status"). The contents of the field are as follows:
Bit No.
7
6
5
4
3
2
1
0
Byte 0
0
0
0
0
EO/4
EO/3
EO/2
EO/1
Byte 1
0
0
0
0
0
0
0
0
Byte 2
0
0
0
NI
EK
0
0
XK
Byte 3
0
0
0
0
EA
RA
IA
XA
EO/1 = 1: read head 1 not connected or defective
EO/2 = 1: read head 2 not connected or defective
EO/3 = 1: read head 3 not connected or defective
EO/4 = 1: read head 4 not connected or defective
XK = 1: external RAM on communication processor faulty
EK = 1: EEPROM on communication processor faulty
NI = 1: internal interface error
XA = 1: external RAM on identifcation circuit board faulty
IA = 1: internal RAM on identification circuit board faulty
RA = 1: EEPROM on identification circuit board faulty
EA = 1: EEPROM on identification circuit board faulty
