Hamilton Electronics EPHUM011 manual Definition of the Measurement Status for PMC1 / PMC6

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

2.5.3.3Reading the measurement value of PMC6

Register 2410 is also used to read the measurement values of PMC6.

Start	Num-	Reg1 /	Reg3 /	Reg5 /	Reg7 /	Reg9 /	Modbus	Read	Write
reg.	ber of	Reg2	Reg4	Reg6	Reg8	Reg10	function	access	access
	reg.						code
2410	10	Selected	Measure	Measure	Min	Max	3, 4	U/A/S	none
		physical	-ment	-ment	allowed	allowed
		unit	value of	status (2)	value (1)	value (1)
			PMC6 (1)

Figure 2.5.3.3.1: Definition of register 2410. Measurement value of PMC6.

(1)Value is always in the physical unit defined in register 2410.

(2)For definition of the status see chapter 2.5.4. All bits set to zero means: no problem.

Command: PMC6 read			Modbus address: 2410		Length: 10	Type: 3		Read
Parameter:	Unit	Value		Status	Min limit		Max limit
Format:	Hex	Float		Hex	Float		Float
Value:	0x04	24.35834		0x00	-20		130

Figure 2.5.3.3.2: Example to read register 2410. Physical unit is set to °C (0x04), PMC6 is 24.35834 °C, Status is 0x00, Min allowed value is -20 °C, Max allowed value is 130 °C.

For definition of the measurement status see chapter 2.5.4.

Attention:

You cannot read selectively the registers 3 and 4 for the measurement value only. You have to read the entire length of the command (10 registers) and extract the desired information.

2.5.3.4Input of an Externally Measured Temperature

Unlike to the VISIFERM DO, this feature is not available for pH ARC Sensors.

2.5.4 Definition of the Measurement Status for PMC1 / PMC6

This is the definition of the status registers read in registers 2090 (PMC1) and 2410 (PMC6):

Bit #	Hex code	Description
0 (LSB)	0x01	Temperature out of measurement range (see chapter 2.8.1)
1	0x02	Temperature out of operating range (see chapter 2.8.1)
2	0x04	Calibration status not zero (see chapter 2.7.4)
3	0x08	Warning not zero (see chapter 2.8.3)
4	0x10	Error not zero (see chapter 2.8.4)

Figure 2.5.4.1: Definition of measurement status for Primary Measurement Channels.

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