Data registers

These registers are used to store the measured values. They can be read in process data mode, but not written.

The three sets of registers are loosely assigned to the mains phases, but to some extent also contain general measured values.

KL8001 data registers

DR no.	Register set 0 (access via DataIN0)		Register set 1 (access via DataIN1)		Register set 2 (access via DataIN2)
DR no.	Contents	Unit	Contents	Unit	Contents	Unit
DR0	Status word ⁽¹⁾	-	Status word ⁽¹⁾	-	Status word ⁽¹⁾	-
DR1	Current (rms value) (average value of L1, L2 and L3)	0.01 A	Voltage (rms value) (average value of L1, L2 and L3)	0.1 V	Active power (sum of L1, L2 and L3)	1 W
DR2	Peak value⁽²⁾ of current in L1 (since the KL8001 was switched on)	0.01 A	Peak value⁽²⁾ of current in L2 (since the KL8001 was switched on)	0.01 A	Peak value⁽²⁾ of current in L3 (since the KL8001 was switched on)	0.01 A
DR3	RMS value current L1	0.01 A	RMS value current L2	0.01 A	RMS value current L3	0.01 A
DR4	RMS value voltage L1	0.1 V	RMS value voltage L2	0.1 V	RMS value voltage L3	0.1 V
DR5	Active power L1	1 W	Active power L2	1 W	Active power L3	1 W
DR6	Cosine j L1	0.01	Cosine j L2	0.01	Cosine j L3	0.01
DR7	Motor loading L1 (L1-L2-L3)	1 A²sec	Motor loading L2	1 A²sec	Load motor L3	1 A²sec
DR8	Energy consumption⁽³⁾ L1	1 kWh	Energy consumption⁽³⁾ L2	1 kWh	Energy consumption⁽³⁾ L3	1 kWh
DR9	Energy consumption (sum of 3 phases)	1 kWh	Maximum current difference between L1, L2 and L3	0.01 A	Cos phi (mean value of L1, L2 and L3)	0.01
DR10	Rated current set at the rotary switches	0.01 A	Switching cycle counter	1	Motor operating hours counter⁽⁴⁾	0.5 h
DR11- DR17	reserved	-	reserved	-	reserved	-
DR18- DR36	Internal register	-	Internal register	-	Internal register	-
DR37	Software version of the measuring unit in ASCII code (e.g.: 0x3343 = 5167_dec =3C_ASCII)	-	Software version of the measuring unit in ASCII code (e.g.: 0x3343 = 5167_dec =3C_ASCII)	-	Software version of the measuring unit in ASCII code (e.g.: 0x3343 = 5167_dec =3C_ASCII)
DR38- DR63	Internal register	-	Internal register	-	Internal register	-

⁽¹⁾ The status word can be read from any of the three sets of registers. It contains the status information for all three channels.
⁽²⁾ The stored peak current values can be reset to zero at any time using bit 0 of the extended control byte.
⁽³⁾ The energy consumption is stored in the registers every half-hour, and is retained even when the KL8001 is switched off.
⁽⁴⁾ The operating hours are stored every 30 minutes in the register and are retained even if the KL8001 is switched off.

Reading a data register

If the register number of a data register is entered during process data mode in the associated control byte, then its contents will be returned in the corresponding process data word.

Data register assignments

Register set	corresponding control byte	Associated process data word
0	Control byte 0	DataIN0
1	Control byte 1	DataIN1
2	Control byte 2	DataIN2

Examples

Read the active power of phase L1:

Enter data register number 5 into control byte 0.
The content of register DR5 in register set 1 is returned in process data word DataIN0.

Read the energy consumption of phase L2:

Enter data register number 8 into control byte 1.
The content of register DR8 in register set 2 is returned in process data word DataIN1.

Read cos phi for phase L3:

Enter data register number 6 into control byte 2.
The content of register DR6 in register set 3 is returned in process data word DataIN2.

Further Information

Status word