Register overview

The following registers are used for parameterization of the KL4494. Each signal channel of the analog terminal has one register that can be read or written to with the aid of control, status and data bytes via register communication.

Register no.	Comment	Default value		R/W	Memory
R0	Raw value of the A/D converter (X_R)	-	-	R	RAM
R1	reserved	-		-	-
...	...	...	...	...	...
R5	reserved	-	-	-	-
R6	Diagnostic register	-	-	R	RAM
R7	Command register	0x0000	0_dec	R/W	RAM
R8	Terminal type	0x118E	4494_dec	R	ROM
R9	Firmware version	e.g. 0x3141	e.g. 1A_ASCI	R	ROM
R10	Data length (multiplex shift register)	0x0130	304_dec	R	ROM
R11	Signal channels	0x0218	536_dec	R	ROM
R12	Minimum data length	0x9898	39064_dec	R	ROM
R13	Data structure (data type register)	0x0004	4_dec	R	ROM
R14	reserved	-	-	-	-
R15	Alignment register	e.g. 0x7F80	e.g. 32640_dec	R/W	RAM
R16	Hardware version number	e.g. 0x0000	e.g. 0_dec	R/W	SEEPROM
R17	Manufacturer scaling, analog input: Offset (B_a)	variable	variable	R/W	SEEPROM
R18	Manufacturer scaling, analog input: Gain (A_a)	typ. 0x1080	typ. 4224_dec	R/W	SEEPROM
R19	Manufacturer scaling, analog output: Offset (B_a)	0x0800	2048_dec	R/W	SEEPROM
R20	Manufacturer scaling, analog output: Gain (A_a)	typ. 0x7D00	typ. 32000_dec	R/W	SEEPROM
R21	Overrange-Limit	0x0000	0_dec	R/W	SEEPROM
R22	Underrange-Limit	0x0000	0_dec	R/W	SEEPROM
R23	reserved	-	-	-	-
...	...	...	...	...	...
R30	reserved	-	-	-	-
R31	Code word register	0x0000	0_dec	R/W	RAM
R32	Feature register	0x0404	1028_dec	R/W	SEEPROM
R33	User scaling, analog input: Offset (B_w)	0x0000	0_dec	R/W	SEEPROM
R34	User scaling, analog input: Gain (A_w)	0x0100	256_dec	R/W	SEEPROM
R35	User default value for analog output	0x0000	0_dec	R/W	SEEPROM
R36	User scaling, analog output: Offset (B_w)	0x0000	0_dec	R/W	SEEPROM
R37	User scaling, analog output: Gain (A_w)	0x0100	256_dec	R/W	SEEPROM
R38	reserved	-	-	-	-
...	reserved	...	...	...	...
R63	reserved	-	-	-	-