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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
256
6
PROFIBUS communication
6.6
Parameterising temperature measurement
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Diagnostics and alarm
Process alarm
A process alarm causes a call of the OB 40. Within the OB 40 you have the possibility of determining
the logic basic address of the module that has triggered the process alarm via the local word 6.
Further information on the triggering event can be found in the "Local double word 8".
Local double word 8 of OB 40:
Type C:
0 ... +2315 °C
32 ... 2786.5 °F
273.2 ... 2093.2 K
(0xB7: ext. comp. 0 °C)
(0xC7: int. comp. 0 °C)
+25000
32766
23432
Overflow
0 ... +23150
320 ... 27865
2732 ... 20932
Nominal range
-1200
-1840
1532
Underflow
Type E:
-270 ... +1000 °C
-454 ... 1832 °F
0 ... 1273.2 K
(0xB8: ext. comp. 0 °C)
(0xC8: int. comp. 0 °C)
+12000
21920
14732
Overflow
-2700 ... +10000
-4540 ... 18320
0 ... 12732
Nominal range
-
-
-
Underflow
Type L:
-200 ... +900 °C
-328 ... 1652 °F
73.2 ... 1173.2 K
(0xB9: ext. comp. 0 °C)
(0xC9: int. comp. 0 °C)
+11500
21020
14232
Overflow
-2000 ... +9000
-3280 ... 16520
732 ... 11732
Nominal range
-
-
-
Underflow
Trigger
Process alarm
Diagnosealarm
parameterisable
Configuration/parameterisation errors
-
X
-
Open circuit detected
-
X
X
Measuring range exceeded
-
X
-
Measuring range not reached
-
X
-
Limit value exceeded
X
-
X
Limit value not reached
X
-
X
Process alarm lost
-
X
-
Local byte
Bit 7 ... 0
1
Bit 0: Limit value exceeded channel 1
Bit 1: Limit value exceeded channel 2
Bit 7 ... 2: 0 (fixed)
2
Bit 0: Limit value not reached, channel 1
Bit 1: Limit value not reached, channel 2
Bit 7 ... 2: 0 (fixed)
3/4
Ticker value at the time of the alarm
After mains connection, a timer (
s ticker) is started, which after 65535
s starts
with 0 again.
Measuring range
Measured value
Range
(Fct. no.)
[°C]
[°F]
[K]