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.

R33: User offset

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

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:

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:

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

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.