Register pages for IO-Link parameters

The parameters of the KL6224 can be accessed via register communication or via the KS2000 configuration software. The register model of the terminals is used as a basis. The KL6224 has 64 registers (words). Registers 0 to 31 always have the same meaning. The contents of registers 32 to 63 are specified via the register page selection register (R4).

A register page has 32 registers (64 bytes). The following register pages are used:

Assignment of the IO-Link parameters to the register page and the terminal register

Register page 4 (RP4): Parameter(s) for channel 1 (IO-Link device 1)

KL6224 registers	Description	Name		Comment
RP4.R32	IO-Link master configuration: The master parameters for operating an IO-Link device are entered here (similar to object 0x8000 of the EL6224).	IO-Link DeviceID LowWord		Device ID of the IO-Link device
RP4.R33		IO-Link DeviceID HighWord		Device ID of the IO-Link device
RP4.R34		IO-Link VendorID LowWord		Vendor ID of the IO-Link device
RP4.R35		IO-Link VendorID HighWord		Vendor ID of the IO-Link device
RP4.R36		LowByte	IO-Link revision: Bit 0...3: MinorRev Bit 4...7: MajorRev	ID of the specification version based on which the IO-Link device communicates.
RP4.R36		HighByte	FrameCapability: Bit 0: SPDU Bit 1: Type1 Bit 7: PHY1	The Frame Capability indicates certain functionalities of the IO-Link device (e.g. SPDU supported).
RP4.R37		LowByte	minCycleTime: Bit 6, 7: Time Base Bit 0...5: Multiplier	See table below (time base)
RP4.R37		HighByte	OffsetTime	reserved
RP4.R38		LowByte	ProcDataLenght Input (in IO-Link format)	Bit 7	Byte	0_bin	Length is counted in bits
				Bit 7	Byte	1_bin	Length is counted in bytes
				Bit 6	SIO	1_bin	The device supports the standard IO mode
				Bit 0...4	Length		Length of the process data
		HighByte	ProcDataLenght Output (in IO-Link format)	see LowByte
RP4.R39		CompatibleId		Currently not used
RP4.R40		-		reserved
RP4.R41		MasterControl		0	Channel 1 is inactive
				1	Channel 1 is digital input
				2	Channel 1 is digital output
				3	Channel 1 is IO-Link port and communicates via the IO-Link protocol
				4	reserved
				5	Channel 1 is IO-Link port and communicates via the IO-Link protocol with compressed mode. Note: If compressed mode is active for channel 1, it is active for all channels that operated as IO-Link ports.

Time Base

Time Base	Time base meaning	Calculation	Min. Cycle Time
00_bin	0.1 ms	Multiplier x Time Base	0.0...6.3 ms
01_bin	0.4 ms	6.4 ms + Multiplier x Time Base	6.4...31.6 ms
10_bin	1.6 ms	32.0 ms + Multiplier x Time Base	32.0...132.8 ms
11_bin	6.4 ms	134.4 ms + Multiplier x Time Base	134.4...537.6 ms

KL6224 registers	Description	Name		Comment
RP4.R42	IO-Link actual data: The actual data of the connected IO-Link device is displayed here. This is used for comparison with the master parameters described above (similar to object 0x9000 of the EL6224).	IO-Link DeviceID LowWord		Device ID of the IO-Link device
RP4.R43		IO-Link DeviceID HiWord		Device ID of the IO-Link device
RP4.R44		IO-Link VendorID LowWord		Vendor ID of the IO-Link device
RP4.R45		IO-Link VendorID HiWord		Vendor ID of the IO-Link device
RP4.R46		LowByte	IO-Link revision Bit 0...3: MinorRev Bit 4...7: MajorRev	ID of the specification version based on which the IO-Link device communicates.
RP4.R46		HighByte	FrameCapability: Bit 0: SPDU Bit 1: Type1 Bit 7: PHY1	The Frame Capability indicates certain functionalities of the IO-Link device (e.g. SPDU supported).
RP4.R47		LowByte	minCycleTime: Bit 6, 7: Time Base Bit 0...5: Multiplier	See table below (time base)
RP4.R47		HighByte	OffsetTime	reserved
RP4.R48		LowByte	ProcDataLenght Input (in IO-Link format)	Bit 7	Byte	0_bin	Length is counted in bits
				Bit 7	Byte	1_bin	Length is counted in bytes
				Bit 6	SIO	1_bin	The device supports the standard IO mode
				Bit 0...4	Length		Length of the process data
		HighByte	ProcDataLenght Output (in IO-Link format)	see LowByte
RP4.R49		-		reserved
RP4.R50		-		reserved
RP4.R51		-		reserved

Time Base	Time base meaning	Calculation	Min. Cycle Time
00_bin	0.1 ms	Multiplier x Time Base	0.0...6.3 ms
01_bin	0.4 ms	6.4 ms + Multiplier x Time Base	6.4...31.6 ms
10_bin	1.6 ms	32.0 ms + Multiplier x Time Base	32.0...132.8 ms
11_bin	6.4 ms	134.4 ms + Multiplier x Time Base	134.4...537.6 ms

KL6224 registers	Description	Name		Comment
RP4.R52	IO-Link diagnostics	LowByte	IO-Link state The value of the IO-Link state corresponds to a state from the IO-Link master state machine ( similar to object 0xA000 of the EL6224).	0	Inactive
				1	DigInput
				2	DigOutput
				3	EstablishComm
				4	InitMaster
				5	InitDevice
				6	reserved
				7	reserved
				8	Operate
				9	Stop
		HighByte	LostFrames	This parameter counts the number of lost IO-Link telegrams. This value is deleted whenever IO-Link starts up, otherwise it is incremented continuously.

Register page 5 (RP5): Parameter(s) for channel 2 (IO-Link device 2)

Structure like register page 4

Register page 6 (RP6): Parameter(s) for channel 3 (IO-Link device 3)

Structure like register page 4

Register page 7 (RP7): Parameter(s) for channel 4 (IO-Link device 4)

Structure like register page 4

Register page 8 (RP8): CMD/status interface and acyclic data for IO-Link device

KL6224 registers	Description	Name		Comment
RP8.R32	Cmd	TACYCLICKBUSCMD_CMD_START		0x00000001
		TACYCLICKBUSCMD_CMD_ACK		0x00000002
		TACYCLICKBUSCMD_CMD_READ_CH1		0x00000010
		TACYCLICKBUSCMD_CMD_READ_CH2		0x00000020
		TACYCLICKBUSCMD_CMD_READ_CH3		0x00000030
		TACYCLICKBUSCMD_CMD_READ_CH4		0x00000040
		TACYCLICKBUSCMD_CMD_WRITE_CH1		0x00000100
		TACYCLICKBUSCMD_CMD_WRITE_CH2		0x00000200
		TACYCLICKBUSCMD_CMD_WRITE_CH3		0x00000300
		TACYCLICKBUSCMD_CMD_WRITE_CH4		0x00000400
		TACYCLICKBUSCMD_CMD_SCAN_CH1		0x00001000
		TACYCLICKBUSCMD_CMD_SCAN_CH2		0x00002000
		TACYCLICKBUSCMD_CMD_SCAN_CH3		0x00003000
		TACYCLICKBUSCMD_CMD_SCAN_CH4		0x00004000
RP8.R33	Status	TACYCLICKBUSCMD_STATUS_IDLE		0x00000000
		TACYCLICKBUSCMD_STATUS_BUSY		0x00000001
		TACYCLICKBUSCMD_STATUS_DATAREADY		0x00000002
		TACYCLICKBUSCMD_STATUS_DATAERROR		0x00000003
RP8.R34		SPDU / ISDU SubIdx		SPDU / ISDN index
RP8.R35		LowByte	Length	Length of the data
RP8.R35		HighByte	SPDU / ISDU SubIdx	SPDU / ISDN subindex
RP8.R36	Acyclic data for the IO-Link device
...
RP8.R61

Register page 9 (RP9): Further acyclic data for the IO-Link device

KL6224 registers	Description	Value	Comment
RP9.R0	Further acyclic data for the IO-Link device
...
RP9.R61

Process of an acyclic query

The process of an acyclic query to an IO-Link device is as follows:

Reading of register page 8 R33 (status) to ascertain whether status is Idle
If status = Idle, write TACYCLICKBUSCMD_CMD_START to register page 8 R32 (Cmd)
Write acyclic data into the buffer from register page 8, R36, as required
Start the service by writing the corresponding services in register page 8 R32 (Cmd)
Read register page 8 R33 (status) until no longer busy
Read acyclic data from the buffer from register page 8, R36, as required
Conclude the service by writing TACYCLICKBUSCMD_CMD_ACK to register page 8 R32 (Cmd)