Obsidean_VM/04-SIDEL/00 - MASTER/MIXER/Documentacion/Change Promass F 300 Old for New One.md

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If the change is on PLC S7 - 3xx - Reset Totallizer

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• Check that on the BlenderCtrl_MFM Command tha command must be using 1 instead of 3 to reset the counters

IF #mResetWaterTot THEN
    #mWaterVFMCtrl := 1 ;
ELSE
    #mWaterVFMCtrl := 0 ;
END_IF;

IF #mResetSyrupTot THEN
    #mSyrupMFMCtrl :=  1 ;
ELSE
    #mSyrupMFMCtrl := 0 ;
END_IF;

IF #mResetCO2Tot THEN
    #mCO2MFMCtrl := 1 ;
ELSE
    #mCO2MFMCtrl := 0 ;
END_IF;

IF #mResetProductTot THEN
    #mProductMFMCtrl := 1 ;
ELSE
    #mProductMFMCtrl := 0 ;
END_IF;

Resetting Totalizers via PROFIBUS PA (Promass F 300)

1. PROFIBUS Module Mapping

Slot	GSD Module	Associated Totalizer
9	SETTOT_TOTAL	Totalizer 1
10	SETTOT_TOTAL	Totalizer 2
11	SETTOT_TOTAL	Totalizer 3

Each slot represents a 5‑byte output block sent from the master to the transmitter.

Byte Layout (Master → Instrument)

Byte	Field	Purpose	Allowed Values
1	SETTOT	Control command	==0 = Run (totalise) 1 = Reset 2 = Preset==
2	MODETOT¹	Counting mode	0 = Balance 1 = Only + 2 = Only – 3 = Stop
3‑5	—	Reserved	—

¹ The short module (default) omits MODETOT; only the long variant includes it.

Byte Layout (Instrument → Master)

Byte	Field	Description
1‑4	TOTAL	Current totalizer value (IEEE‑754 float)
5	STAT	Quality & status bits (0x80 = GOOD)

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2. Resetting a Single Totalizer

1. Identify the slot of the target totalizer (9, 10 or 11).
2. Write 1 to Byte 1 (SETTOT) of that slot.
3. Wait one bus cycle (≈ 10–100 ms).
4. Write 0 back to Byte 1 to resume counting.
5. Read TOTAL (bytes 1‑4 in the corresponding input module) and verify it is 0.0.

Example – Reset Totalizer 2 Slot 10 / Byte 1 = 1 → 0

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3. Resetting All Totalizers

• Issue the 1 command simultaneously to Byte 1 of Slots 9, 10 and 11 or
• Activate the configurable discrete input “Reset all totalizers” for at least the debounce time (5–200 ms).