BECKHOFF KL3351 - Manual (Page 12)

Register description
12 KL3351
The linearisation equation is activated by way of R32.
R35: Reserved
R36: Reserved
R37: Filter constant
[0x0000]
The filter constant is taken over after a power on RESET by the terminal.
Filter constants: First notch [Hz] Conversion time [ms]
0x0000 25 250
0x50 100 65
0xA0 50 125
0x140 25 250
0x280 12.5 500
R38: Gain setting [0x0010]
Various amplification factors are set with this register, permitting different
measurement resolutions.
R38 Gain U
D
[µV]/Digit
U
ref
[mV]/Digit
0x0000 1 8
0x0004 2 4
0x0008 4 2
0x000C 8 1
0x0010 16 0.5 Default
0x0014 32 0.25
0x0018 64 0.125
Register communication KL3351
Register access via
process data transfer
Bit 7=1: register mode
When bit 7 of the control byte is set, the first two bytes of the user data are
not used for process data transfer, but are written into or read out of the
terminal’s register.
Bit 6=0: read
Bit 6=1: write
In bit 6 of the control byte, you define whether a register is to be read or
written. When bit 6 is not set, a register is read without modification. The
value can be taken from the input process image.
When bit 6 is set, the user data is written into a register. The operation is
concluded as soon as the status byte in the input process image has
supplied an acknowledgement (see examples).
Bits 0 to 5: address The address of the register to be addressed is entered in bits 0 to 5 of the
control byte.
Control byte in the
register mode
MSB
REG=1 W/R A5 A4 A3 A2 A1 A0
REG = 0 : Process data transfer
REG = 1 : Access to register structure
W/R = 0 : Read register
W/R = 1 : Write register
A5..A0 = Register address
A total of 64 registers can be addressed with the addresses A5....A0.