Lenze I/O system 1000 - Page 256

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]