BECKHOFF KL3132, KL3142, KL3152, KL3162, KL3172, KL3182: Access from the user program

Register Description

The registers are used for the parameterization of the bus terminals and exist once for each channel. They can be read or written via register communication.

R0: Raw ADC value

Register R0 contains the raw value of the analog/digital converter. This is the unchanged analog value prior to any scaling.

R1: Calibration value - offset

After a calibration, the offset value that was determined is entered in register R1 and used for the correction calculation.

R2: Calibration value - gain

After a calibration, the gain value that was determined is entered in register R2 and used for the correction calculation.

R6: Diagnostic register

Status byte SB is placed into register R6.

R7: Command register

Note	For a command to be executed, it is first necessary for the user code word, 0x1235, to be entered into register R31.

Command 0x7000: Restore Factory Settings

Entering 0x7000 in register R7 restores the factory settings for the following registers of both channels:

KL3162, KL3172, KL3142, KL3152: R32: 0x0180 (384dec) R33: 0x0000 (0dec) R34: 0x0100 (256dec) R35: 0x0000 (0dec) R36: 0x0000 (0dec) R37: 0x35C0 (13760dec) R40: 0x0708 (1800dec) R44: 0x0003 (3dec) R47: 0x0032 (50dec) R48: 0x0005 (5dec)

KL3132, KL3182: R32: 0x0182 (386dec) R33: 0x0000 (0dec) R34: 0x0100 (256dec) R35: 0x0000 (0dec) R36: 0x0000 (0dec) R37: 0x35C0 (13760dec) R40: 0x0708 (1800dec) R44: 0x0003 (3dec) R47: 0x0032 (50dec) R48: 0x0005 (5dec)

Note	The Restore Factory Settings command resets both channels in the terminal to the factory settings simultaneously, regardless of which register set it is called from!

R8: Terminal description

The description of the terminal is contained in register R8.
KL3172: 0x0C64 (3172_dec)
KL3182: 0x0C6E (3182_dec)
KL3132: 0xC3C (3132_dec)
KL3162: 0xC5A (3162_dec)
KL3142: 0xC46 (3142_dec)
KL3152: 0xC50 (3152_dec)

R9: Firmware revision level

Register R9 contains the ASCII coding of the terminal's firmware revision level, e.g. 0x3141 = '1A'. The '0x31' corresponds here to the ASCII character '1', while the '0x41' represents the ASCII character 'A'. This value can not be changed.

R12: Minimum data length of one channel

Bit 0 to 6 of the most significant byte show the minimum number of output data in bit: 000.0000_bin = 0_dec so 0 Byte.

Bit 0 to 6 of the least significant byte show the minimum number of output data in bit: 001.1000_bin = 24_dec so 3 Byte.
That bit 7 is set shows, that control and status byte are not mandatory for terminal operation and are not transmitted in compact mode.

R16: Hardware version number

Register R16 contains the hardware version of the terminal.

R17: Manufacturer compensation - offset

This register contains the offset of the manufacturer compensation (16 bit signed integer).

R18: Manufacturer compensation - gain

This register contains the gain of the manufacturer compensation (16 bit unsigned integer x 2^-16 + 1). Examples:
0x0000 means factor 1
0xFFFF means factor 2

R19: Manufacturer scaling - offset:

This register contains the offset of the manufacturer scaling. It can be activated by R32.1 in the feature register (16 bit signed integer).

R20: Manufacturer scaling - gain:

This register contains the gain of the manufacturer scaling. It can be activated by R32.1 in the feature register (16 bit unsigned integer x 2^-8 + 1). Examples:
0x0100 means factor 1.
0x0080 means factor 0,5

R21: Upper measuring range limit

This register contains the upper measuring range limit. It can be activated by R32.8 in the feature register.

R22: Lower measuring range limit

This register contains the lower measuring range limit. It can be activated by R32.8 in the feature register.

R23: Reference calibration value: offset

This register contains the reference value of the calibration, which is determined during the manufacturer compensation.

R24: Reference calibration value: gain

This register contains the reference value of the calibration, which is determined during the manufacturer compensation.

R31: Code word register

• If you write into the user registers without first entering the user code word (0x1235) into the code word register, the terminal will not accept the supplied data.
• If you write values into the user registers and have previously entered the user code word (0x1235) in the code word register, these values are stored in the RAM registers and in the SEEPROM registers and are therefore retained if the terminal is restarted.

The code word is reset if the terminal is restarted.

R32: Feature register

The feature register specifies the terminal's configuration.

Bit	R32.15	R32.14	R32.13	R32.12	R32.11	R32.10	R32.9	R32.8
Name	-	-	-	-	disChannel	enTh2	enTh1	enOverProt

Bit	R32.7	R32.6	R32.5	R32.4	R32.3	R32.2	R32.1	R32.0
Name	enStable	disDiffMeasure	disCali	enSiemensFormat	enAverageFormat	disWdTimer	enManScal	enUsrScal

Key

Bit	Name	Description			default
R32.15	-	reserved			0bin
...	...	...			...
R32.12	-	reserved			0bin
R32.11	disChannel	0bin	Channel enabled		0bin
		1bin	Channel disabled
R32.10	enTh2	0bin	Threshold 2 not active		0bin
		1bin	Threshold 2 active
R32.9	enTh1	0bin	Threshold 1 not active		0bin
		1bin	Threshold 1 active
R32.8	enOverProt	0bin	Measuring range limitation not active		1bin
		1bin	Measuring range limitation active
R32.7	enStable	0bin	Calibration value stabilization not active		1bin
		1bin	Calibration value stabilization active
R32.6	disDiffMeasure	0bin	Differential measurement active		0bin
		1bin	Differential measurement not active (only KL3132, KL3162, KL3172, KL3182)
R32.5	disCali	0bin	Cyclic calibration of the A/D converter is active		0bin
		1bin	Cyclic calibration of the A/D converter is not active
R32.4	enSiemensFormat	0bin	Siemens output format not active		0bin
		1bin	Siemens output format active
R32.3	enAverageFormat	0bin	Signed amount representation not active		0bin
		1bin	Signed amount representation active
R32.2	disWdTimer	0bin	Watchdog timer is active (the watchdog will trigger if no process data is received for 100 ms)		0bin
		1bin	Watchdog timer is not active
R32.1	enManScal	0bin	Manufacturer scaling is not active	KL3162, KL3172, KL3142, KL3152	0bin
		1bin	Manufacturer scaling is active	KL3132, KL3182:	1bin
R32.0	enUsrScal	0bin	User scaling is not active		0bin
		1bin	User scaling is active

R33: User scaling - offset

This register contains the offset of the user scaling. User scaling can be activated through bit R32.0 in the feature register (16 bit signed integer).

R34: User scaling - gain

This register contains the gain of the user scaling. User scaling can be activated through bit R32.0 in the feature register (16 bit unsigned integer x 2^-8 + 1, 1_dec corresponds to 0x0100).

R35: Threshold 1

Threshold 1 is entered in register R35. The threshold can be activated through bit R32.9 in the feature register.

R36: Threshold 2

Threshold 2 is entered in register R36. The threshold can be activated through bit R32.10 in the feature register.

R37: Filter constants of the A/D converter, and configuration bits for the filter

(Default value: 35C0_hex)

The terminal possesses two low-pass filter stages:

• The first stage consists of a sinc^³ filter, and is always active.
• The second stage consists of a 22nd order FIR filter. This can be deactivated.

Bit	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Name	Filter constants SF (SF.11 to SF.0)												Zero	Zero	SkipFIR	Fast

Key

Bit	Name	Description		default
R37.15	Filter constants SF (SF.11 - SF.0)	The filter constant SF specifies the 3dB limit frequency of the sinc3 filter. The value ranges from 150 to 2047. The 3 dB limit frequency Flimit and the 64.5 dB stop frequency Fstop are calculated as follows: Skip = 0 Flimit = 11981 / SF Fstop = 43008 / SF Skip = 1 Flimit = 80486 / SF		35Chex (860dec)
...
R37.4
R37.3	Zero	0bin	Warning Bits R37.2 and R37.3 must always be Zero, otherwise errors will occur in the A/D converter!	0bin
R37.2	Zero	0bin		0bin
R37.1	SkipFIR	0bin	FIR filter is active.	0bin
		1bin	FIR filter is bypassed.
R37.0	Fast	0bin	Fast Step Mode is not active.	0bin
		1bin	Fast Step Mode is active: a fast reaction will follow jumps at the input, in spite of the filter stage being active. In this case the filter is bypassed!

Examples

Value in R37	Fstop	cycle time
0x35C0	50 Hz	140 ms
0x2660	70 Hz	100 ms
0x1330	140 Hz	50 ms
0x7FF1		40 ms
0x3FF1		20 ms
0x1001		<4 ms

Value in R37	Flimit	cycle time
0x7FF2	39,6 Hz	40 ms
0x3FF2	77,36 Hz	20 ms
0x1002	158 Hz	<4 ms

R40: Calibration interval

This register contains the calibration interval for the terminal's automatic calibration. The unit is 100 ms. The automatic calibration can be activated through bit R32.5 in the feature register.

R44: Forced calibration interval

This register contains the interval for the terminal's forced calibration. This interval is always a multiple (the default is 3_dec) of the calibration interval. (R40). The interval for forced calibration when the terminal leaves the factory is therefore 3 x 180 s = 540 s. The forced calibration can be activated through bit R32.5 in the feature register.

R47: Number of stable measured values

This register contains the number of stable measured values recorded during the calibration.

R48: Tolerance for measured value stability

This register contains the specified stable measured value tolerance.