ECKELMANN Compact GLT 3010, Руководство по эксплуатации

Страница: 50 / 119

Firmware: V2.18 / V-- 26.10.2022 50/119
The following entries can be found in the export files created from the Signal List by the Signal List Tool:
File: EA_DDC_1.EXP
...
(*43*) ME_W_T_ZULUFT : REAL; (* W supply air temperature *)
(*43*) ME_W_T_ZULUFT_raw : WORD; (* W supply air temperature *)
...
File: … Sollwerte DDC 1.EXP
(* W supply air temperature *)
ME_W_T_ZULUFT := WORD_TO_REAL( ME_W_T_ZULUFT_raw ) * 0.1;
IF (ME_W_T_ZULUFT_raw < 100) OR (ME_W_T_ZULUFT_raw > 500) OR (set_default_b = TRUE ) THEN
ME_W_T_ZULUFT_raw := 300;
END_IF
6.2.7 Marker $PRIO - Alarm priority
An IEC process variable can be directly linked to a non-locked alarm in the Signal List .
Example: A potential-free normally closed contact of a pump located on the variable _E_PUMPE_HZREG with
the address IX0.1.
The value -1 should be entered in column $M for NC contacts so that the inverse logic (low active) is correctly
displayed in the visualisation under LDSWin.
The desired priority = 2 is entered in column $PRIO.
Opening the contact (variable value = FALSE) will signal an alarm with priority 2 and the text "Pump Heating
Coil fault".
Automatic generation of alarms for sensor faults
Setting a priority for rows with defined $FTYP generates the following in the Alarm_Prepare function :
LDS_AlmStat_ar[2].io_b := F_T_ZULUFT.a_bruch_b; LDS_AlmPrio_ar[2] := 2;
In the event of a sensor fault, the function block F_T_ZULUFT sets the output a_bruch_b. An alarm message
with priority 2 is then signalled via Alarm_Prepare.