Measured Values In The Event Of Wire Break Dependent On Enabled Diagnostics - Siemens SIMATIC ET 200S Manual

Measured Values in the Event of Wire Break Dependent on Enabled Diagnostics

For the measuring range tables
• 1 to 5 V, 4 to 20 mA
• Temperature sensor Pt xxx Standard and Climatic, Ni xx Standard and Climatic,
Cu 10 Standard and Climatic
• Thermocouple type E, N, J, K, L, S, R, B, T, U
the following supplements and rules apply:
Table 12-1 Measured Values in the Event of Wire Break Dependent on Enabled Diagnostics
Format Parameter assignment
•
S7 "Wire-break" diagnosis
enabled (at 1 to 5 V, 4 to
20 mA, RTD)
•
"Wire-break test"
diagnosis enabled
(with TC)
•
"Wire-break" diagnosis
blocked (at 1 to 5 V, 4 to
20 mA, RTD)
•
"Overflow/underflow"
diagnostics enabled
•
"Wire-break" diagnosis
blocked (at 1 to 5 V, 4 to
20 mA, RTD)
•
"Overflow/underflow"
diagnostics disabled
•
"Wire-break test"
diagnosis blocked
(with TC)
1)
Measurement range limits for detection of wire break/underflow:
1 to 5 V: at 0. 296 V
4 to 20 mA: at 1.185 mA
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Measured Values
decimal
32767
1)
32767
--32767
1)
--32767
1)
------
Analog Electronic Modules
hexadecimal
•
7FFF Diagnostics message "wire
H
break"
•
7FFF Diagnostics message "wire
H
break"
•
8000 Measured value after
H
leaving the undershoot
range
•
"Value under low limit"
diagnostic message
•
8000 Measured value after
H
leaving the undershoot
range
•
Open input: Undefined
-- -- --
measured value
Explanation
12-3