Hamilton Electronics EPHUM011 manual Operating Hours and Counters, 168.3667

pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)

2.8.2 Operating Hours and Counters

In register 4676 are given:

total operating hours

operating hours above max measurement temperature (see chapter 2.8.1)

the operating hours above max operating temperature (see chapter 2.8.1)

In register 4682 are stored:

number of power ups

number of watchdog resets

number of writing cycles to the sensor’s flash memory

In register 4688 are given:

number of sterilizations in place (SIP) (see chapter 2.8.5)

number of cleanings in place (CIP) (see chapter 2.8.5)

Start	Number of	Reg1 / Reg2	Reg3 / Reg4	Reg3 / Reg4	Modbus	Read	Write
register	registers				function code	access	access
4676	6	Operating	Operating	Operating	3, 4	U/A/S	none
		hours	hours above	hours above
		[h]	max	max
			measurement	operating
			temperature	temperature
			[h]	[h]
4682	6	Number of	Number of	Number of	3, 4	U/A/S	none
		Power ups	Watchdog	Writing
			resets	cycles to
				flash memory
4688	4	Number of	Number of	-	3, 4	U/A/S	none
		SIP cycles	CIP cycles

Figure 2.8.2.1: Definition of register 4676, 4682 and 4688.

Command: Operating hours			Modbus address: 4676		Length: 6	Type: 3	Read
Parameter:	Operating hours [h]		Operating hours	Operating hours
		above max		above max
		measurement		operating
		temperature		temperature
		[h]		[h]
Format:	Float	Float		Float
Value:	168.3667	0		0

Figure 2.8.2.2: Example to read the total operating hours, the operating hours above the max measurement temperature and the operating hours above the max operating temperature.

Command: Power & watchdog			Modbus address: 4682			Length: 6	Type: 3	Read
Parameter:	Number of Power	Number of		Number	of Writing
	ups	Watchdog resets		cycles to flash
				memory
Format:	Decimal	Decimal		Decimal
Value:	34	1		16

Figure 2.8.2.3: Example to read the number of power ups, the number of watchdog resets and the number of writing cycles to flash memory.

Command: SIP & CIP			Modbus address: 4688	Length: 4	Type: 3	Read
Parameter:	SIP cycles	CIP cycles
Format:	Decimal	Decimal
Value:	0	0

Figure 2.8.2.4: Example to read the number of SIP cycles and the number of CIP cycles. For the definition of SIP and CIP cycles see chapter 2.8.5.

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