Siemens ET 200S - Page 361

Analog Electronic Modules
12-5
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Table 12-1 Measured Values in the Case of a Wire Break Depending on Diagnostic Being Enabled
Format DescriptionMeasured ValuesParameter AssignmentFormat Description
Hexadec.Decimal
Parameter Assignment
S5  “Wire break” enabled (at
1 to 5 V, 4 to 20 mA,
RTD)
1
4095
(2
0
to 2
12
)
7FFB
H
 “Open circuit” diagnostic
message
 “Wire break check”
enabled
(in the case of TC)
4095
(2
0
to 2
12
)
7FFB
H
 “Open circuit” diagnostic
message
 “Wire break” disabled (at
1 to 5 V, 4 to 20 mA,
RTD)
1
 “Overflow/underflow”
enabled
150 04B1
H
 Measured value after
leaving the underrange
 “Lower limit value violated”
diagnostic message
 “Wire break” disabled (in
the case of RTD)
 “Overflow/underflow”
enabled
Last
measured
value – 1
Last
measured
value – 1
and overflow
bit set
 Measured value after
leaving the underrange
 “Lower limit value violated”
diagnostic message
 “Wire break” disabled (at
1 to 5 V, 4 to 20 mA,
RTD)
1
 “Overflow/underflow”
disabled
150 04B1
H
 Measured value after
leaving the underrange
 “Wire break” disabled (in
the case of RTD)
 “Overflow/underflow”
disabled
Last
measured
value – 1
Last
measured
value – 1
and overflow
bit set
 Measured value after
leaving the underrange
 “Wire break check”
disabled
(in the case of TC)
–––
–––
 Open input: undefined
measured value
1
Measuring range limits for detecting the wire break/underflow:
1 to 5 V: at 0.296 V
4 to 20 mA: at 1.185 mA