BECKHOFF KL3361, KL3362: Data

Register Description

The following registers exist for each signal channel of the oscilloscope terminal. This means these registers exist

• once on the single-channel KL3361
• twice on the two-channel KL3362

R0: Unprocessed ADC value

Raw value of the analog/digital converter.

R6: Diagnostic register

In a later firmware version, the diagnostic register will be used to provide diagnostic information about the state of the oscilloscope terminal.

R7: Command register

This register can be used to transfer commands to the oscilloscope terminal.

Commands

Command 0x0201: WriteEnvCurvToRAM

Writes the sampling values into the RAM envelope curve (Teach-in method).
Return value. 0x201

Command 0x0202: WriteEnvCurvToFLASH

Writes the sampling values into the RAM envelope curve and the flash envelope curve (Teach-in method).
Return value. 0x202

ROM register

The terminal uses two channels for assigning a byte/word/word data structure. This structure is not supported by couplers that do not have the BK200 switch functionality. In this case, read access to the second register set is not available.

The terminal always reports with a shift register length of 5 bytes (see general terminal documentation).

R8: Terminal description

Register R8 contains the terminal identifier in hexadecimal coding:
KL3361: 0x0D21 (3361_dec)
KL3362: 0x0D22 (3362_dec)

R9: Firmware revision level

Register R9 contains the firmware revision level of the terminal in hexadecimal coding, e. g. 0x3144 (12612 _dec).

R10: Shift register length

KL3361: 0x0128
KL3362: 0x0228

R11: Number of signal channels

KL3361: 0x0128
KL3362: 0x0228

R12: Minimum data length

KL3361: 0x2828
KL3362: 0x2828

R13: Data type

Register R13 contains the data type of the Bus Terminal. 0x0004 means analog input.

R15: Alignment Register

 

R16: Hardware version number

Register R16 contains the hardware revision level of the terminal in hexadecimal coding, e.g. 0x0000 (0_dec).

User register

The user registers of the oscilloscope terminal can be written by the user program in order to change the characteristics of the oscilloscope terminal at run-time.

R31: Code word register

• If you write values into the user registers without previously having entered the user code word (0x1235) in the code word register, these values are only stored in the RAM registers, but not in the EPROM registers and are therefore lost if the terminal is restarted.
• 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 EPROM registers and are therefore retained if the terminal is restarted.

A restart will reset the code word.

R32: Feature register

The feature register specifies the terminal’s operating mode.

Bit	Operation mode	Value	Explanation	Default
R32.15	-	-	reserved	0bin
...	-	-	reserved	0bin
R32.11	-	-	reserved	0bin
R32.10 R32.9 R32.8	Trigger type	000bin	Post-trigger. Recording commences as soon as a trigger event occurs.	000bin
		001bin	Pre-trigger. Recording ceases as soon as a trigger event occurs.
		010bin	Mid-trigger: The trigger event is the centre of the recording.
		011bin	FastSampling (from firmware version 1B'): Operation with increased sampling rate of up to 10µs. The recording can only be started via the trigger input. The settings of the trigger units are not taken into account. Only the first channel is recorded, even for KL3362.
R32.7	-	-	reserved	0bin
R32.6	Auto trigger	0bin	not active	0bin
		1bin	active: The trigger unit is automatically activated once the preceding event has been evaluated. To this end, bit 0 is toggled in status byte 1 (SB1) with each new evaluation.
R32.5	Test mode	0bin	not active	0bin
		1bin	active: The oscilloscope terminal simulates a ramp of sampling values. The sampling value is incremented after each reading. The ramp thus runs from 0x0000 to 0x3FFF. From 0x3FFF, the sampling value after each reading is decremented, so that the ramp returns to 0x0000. The process is repeated cyclically.
R32.4	Trigger delay	0bin	not active	0bin
		1bin	active: Samples skipped after the trigger event. The number of samples that are skipped is specified in the Trigger delay register (R52).
R32.3	-	-	reserved	0bin
...	-	-	reserved	0bin
R32.0	-	-	reserved	0bin

R33: User offset

Offset, can be changed by the user. Scaling:
offset = full scale value x parameter / resolution

Example for KL3361: 16 mV x 100 / 32767 = 0.049 mV

R34: User gain

Gain factor, can be changed by the user.

R35: Sample rate

Interval (T_s) between two samples (scans) in microseconds.
The sampling speed is limited to T_s =100 µs (10 kHz) by the evaluation of the trigger detectors.
Only the Fast sampling mode enables sampling at T_s =10 µs (100 kHz).

Note

The sample rate influences the transmission speed with which the oscilloscope terminal can be addressed by the K-Bus: A sample rate of 100 µs can only accommodate bus cycles with a minimum duration of 3 ms! A sample rate of 150 µs can only accommodate bus cycles with a minimum duration of 2 ms! The Fast sampling mode can only accommodate K-bus cycles with a minimum duration of 2 ms! This must be taken into account when considering your PLC cycle time.

R36: Sample amount

Number of sampling values to be recorded. A maximum of 4,000 values can be recorded (default 100).

R37: Index register for output data (terminal parameters)

Low Byte:

The content of the Low byte of this register determines which parameter of the oscilloscope terminal

• KL3361 is assigned process data register DataOUT0
• KL3362 is assigned process data register DataOUT0 (channel 1) or process data register DataOUT0 (channel 2)

The decimal value of the index corresponds to the register number of the parameter to be written.

The following indices are supported:

Index	Decimal	Parameters
0x00	00	Default value
0x29	41	Trigger Unit 1, Threshold 1
0x2A	42	Trigger Unit 1, Threshold 2
0x2B	43	Trigger Unit 1, Pulse width
0x2C	44	Trigger Unit 1, Valid Trigger Time
0x2F	47	Trigger Unit 2, Threshold 1
0x30	48	Trigger Unit 2, Threshold 2
0x31	49	Trigger Unit 2, Pulsewith
0x32	50	Trigger Unit 2, Valid Trigger Time

High Byte:

The content of the High byte of this register determines which parameter of the oscilloscope terminal

• KL3361 is assigned process data register DataOUT1
• KL3362 is assigned process data register DataOUT1 (channel 1) or process data register DataOUT1 (channel 2)

(see Low byte for indices).

R38: Index register 1 for input data

The content of this register (default value: 0x0000) determines which date is shown in the process data register

• DataIN0 of oscilloscope terminal KL3361
• DataIN0 (channel 1) or DataIN0 (channel 2) of oscilloscope terminal KL3362

The following indices are supported:

Index	Decimal	Date
0x0000	0	Current analog value
0x0001	1	Maximum value of a recording
0x0002	2	Minimum value of a recording
0x0003	3	RMS value of the recording: Sqrt((Sum(xn2))/n
0x0004	4	Mean value of the recording: (Sum (xn))/n
0x0005	5	Peak-peak value of the recording
0x0006	6	Cycle duration
0x0007	7	Pulse width - high: threshold level is trigger level 1 The trigger starts as soon as four successive values are above the threshold level The trigger is stopped as soon as four successive values are below the threshold level
0x0008	8	Pulse width - low: threshold level is trigger level 1 The trigger starts as soon as four successive values are below the threshold level The trigger is stopped as soon as four successive values are above the threshold level
0x0009	9	Mark/space ratio
0x000A	10	reserved for jitter Tmax
0x000B	11	reserved for jitter Tmin
0x000C	12	reserved for jitter Tmean
0x000D	13	Histogram max, i.e. the value that has occurred most frequently.
0x000E	14	Timer1LatchValue
0x000F	15	Timer1Run (read/write)
0x0010	16	Timer2LatchValue
0x0011	17	Timer2Run (read/write)
0x0012	18	Error counter inner envelope curve
0x0013	19	Error counter outer envelope curve
0x0014	20	Number of samples up to analog value greater than threshold level 1
0x0015	21	Number of samples up to analog value less than threshold level 1
0x8000		First sampling value. The recorded sampling values are available from here. The MSB has to be set to zero in order to determine the trace offset.
0x8001		Second sampling value.
0x8002		Third sampling value.
...	...	...
0x8063		Hundredth sampling value (in the delivery state, 100 values are stored).
...	...	...
0x8F9F		Four thousandth sampling value (a maximum of 4,000 values can be stored).

R39: Index register 2 for input data

The content of this register (default value: 0x8010) determines which date is shown in the process data register

• DataIN1 of oscilloscope terminal KL3361
• DataIN1 (channel 1) or DataIN1 (channel 2) of oscilloscope terminal KL3362

(See Index register 1 for process input data for indices.)

R40: Trigger unit 1, trigger logic

Bit	Operation mode	Value	Explanation		Default
R40.15	-	-	reserved		0bin
R40.14, R40.13, R40.12	enableSource	000bin	Trigger always enabled		000bin
		001bin	Trigger enabled if signal at first analog input above threshold level 2	First analog input is for KL3361 the Input for differential voltage of the measuring bridge (UB+/UB-). KL3362 the Oscilloscope input channel 1 (IN 1).
		010bin	Trigger enabled if signal at first analog input below threshold level 2
		011bin	Trigger enabled if signal at second analog input above threshold level 2	Second analog input is for  KL3361not existent KL3362 the Oscilloscope input channel 2 (IN 2).
		100bin	Trigger enabled if signal at second analog input below threshold level 2
		101bin	Trigger enabled if trigger input (24V trigger) on high potential.
		110bin	Trigger enabled if trigger input (24V trigger) on low potential.
R40.11, R40.10	TriggerSource	00bin	Timer with threshold level 1		11bin
		01bin	First analog input (IN1), with threshold level 1
		10bin	Second analog input (IN2), with threshold level 1 (KL3362 only)
		11bin	Digital input
R40.9, R40.8	TriggerMode	00bin	Shot: The trigger is triggered with an edge of the bEnableTrigger bit of the control byte (CB1.0), if it is enabled via enableSource.		01bin
		01bin	Edge: The trigger is triggered via the edge selected via TriggerSource and bLogic, if it is enabled via enableSource.
		10bin	Glitch: The trigger is triggered via the pulse selected via TriggerSource, bLogic and bLarger, if it is enabled via enableSource.
R40.7	-	-	reserved		0bin
R40.6	bTriggerWinEn	1bin	The trigger condition for the following trigger unit must arrive within the valid trigger time for trigger unit 1. Otherwise everything is reset		0bin
R40.5	bStartScopeRec	0bin	The trigger event causes the downstream trigger unit to be enabled		0bin
		1bin	The trigger event causes the recording to be started
R40.4	bTriggerOutEn	1bin	The trigger event causes the digital output to be set, if this is enabled by bit 2 of the Control Byte 1 (CB1.2).		0bin
R40.3	bLatchtimer	1bin	The trigger event causes the current value of the running timer to be stored.		0bin
R40.2	bResetTimer	1bin	The trigger event causes the timer to be reset to zero. The timer will start running again automatically immediately.		0bin
R40.1	bLarger	0bin	in glitch mode: pulse width less than the pulse width specified for trigger unit 1		0bin
		1bin	in glitch mode: pulse width greater than the pulse width specified for trigger unit 1
R40.0	bLogic	0bin	in edge mode (edge triggering): falling edge	in glitch mode: negative pulse	1bin
		1bin	in edge mode (edge triggering): rising edge	in glitch mode: positive pulse

R41: Trigger unit 1, threshold level 1

Threshold level for the trigger source (TriggerSource) of trigger unit 1

R42: Trigger unit 1, threshold level 2

Threshold level for enabling the trigger (EnableSource) of trigger unit 1

R43: Trigger unit 1, pulse width

Here you can specify the pulse width (t_P) of trigger unit 1 for the glitch mode. The number of samples (n_SP) is entered as the parameter. The pulse width thus depends on the sample rate! Example:

• Sample rate: T_s = 200 µs
• Samples: n_SP = 100

Pulse width: t_P = T_s x n_SP = 200 µs x 100 = 20 ms

R44: Trigger unit 1, valid trigger time

Here you can specify the valid trigger time (t_VT) for trigger unit 1. The number of valid samples (n_VS) is entered as the parameter. The valid trigger time thus depends on the sample rate! Example:

• - Sample rate: T_s = 200 µs
• - Valid samples: n_VS=100

Valid Trigger Time: t_VT = T_s x n_VS =200 µs x 100 = 20 ms

R45:

reserved

R46: Trigger unit 2, trigger logic

see Trigger detector 1

R47: Trigger unit 2, threshold level 1

Threshold level for the trigger source (TriggerSource) of trigger unit 2

R48: Trigger unit 2, threshold level 2

Threshold level for enabling the trigger (EnableSource) of trigger unit 2

R49: Trigger unit 2, pulse width

Here you can specify the pulse width (t_P) of trigger unit 2 for the glitch mode (see Trigger unit 1, pulse width).

R50: Trigger unit 2, valid trigger time

see Trigger unit 1, valid trigger time

R51:

reserved

R52: Trigger delay

A trigger delay (t_TD) _{can be specified here. The number of skipped samples (nSTD) is entered as the parameter. The trigger delay thus depends on the sample rate! Example: Sample rate: Ts =  200 µs, skipped samples:  nSTD=100
tTD = Ts x nSTD =  200 µs x 100 = 20 ms}

R53: Parameter 1 envelope curve

e.g. distance of the inner envelope curve
After the trace recording, the envelope curve is evaluated.

R54: Parameter 2 envelope curve

e.g. distance of the outer envelope curve
After the trace recording, the envelope curve is evaluated.

R55: Samples envelope curve

Number of samples to be evaluated (512 max.).

R56: Trigger frequency

Frequency of the timer that can be used for triggering.

R60: Trace data register 1

Contains the sampling value from the register specified in the trace index register (R62).
After the end of the read access (change of register address), the trace index (R62) is incremented by the zoom distance n_Z (see R63).

R61: Trace data register 2

Contains the sampling value from the register following the register specified in the trace index register (R62).
After the end of the read access (change of register address), the trace index (R62) is incremented by the zoom distance n_Z (see R63).

R62: Trace index register

Writing: Sets the trace index to offset
Reading: Current value of the trace index.

The index is reset to zero at the start of a recording.
Offset zero to 0x3FFF contains the trace data.
From 0x8000, the envelope curve is given

R63: Zoom register

With the zoom register you can specify that

• only certain values or
• pre-processed values (maximum value , minimum value or arithmetic mean value)

are transferred to the control.

Bit	Name	Value	Explanation	Default
R63.15 R63.14	Zoom mode	00bin	Sample zoom - the trace index register is increased automatically after each reading by the zoom distance nZ. Therefore, only every nZth value is read.	-
		01bin	Max zoom - the highest of the read values is output
		10bin	Min zoom - the lowest of the read values is output
		11bin	Mean value zoom - the arithmetic mean of the read values is output
R63.13 R63.12	-	-	reserved	-
R63.11 ... R63.0	Zoom distance nZ	Number nZ of sampling values, by which the trace index register (R62) is increased in zoom mode Sample zoom after each reading. Examples:		-
		0x000	The same value is always read.
		0x001	All values are read.
		0x002	Only every second value is read.
		0x00A	Only every tenth value is read.