BECKHOFF KL3201 - Manual (Page 19)

Register Description
KL3201, KL3202 and KL3204 17
KL3202 as resistance input
0 to 1 kΩ
If the KL3202 is used for resistance measurements, the following values
should be written into the following registers:
R32: Feature register: 0xF401
i.e. user scaling active with display of the measured value in Ohm and two-
wire connection.
R33: User scaling - offset (0x0000)
R34: User scaling - gain (0x0010)
the display of the measured value follows:
Resistance in Ω Output value
0 0
1000 1000
Register communication
Register access via
process data exchange
Bit 7 = 1
bin
: Register mode
If bit 7 of the control byte is set, then the first two bytes of the user data are
not used for exchanging process data, but are written into or read from the
terminal's register set.
Bit 6 = 0
bin
: read
Bit 6 = 1
bin
: write
Bit 6 of the control byte specifies whether a register should be read or
written. If bit 6 is not set, then a register is read out without modifying it.
The value can then be taken from the input process image.
If bit 6 is set, then the user data is written into a register. As soon as the
status byte has supplied an acknowledgement in the input process image,
the procedure is completed (see example).
Bit 0 to 5: Address The address of the register that is to be addressed is entered into bits 0 to
5 of the control byte.
Control byte in
register mode
MSB
REG=1 W/R A5 A4 A3 A2 A1 A0
REG = 0
bin
: Process data exchange
REG = 1
bin
: Access to register structure
W/R = 0
bin
: Read register
W/R = 1
bin
: Write register
A5...A0 = register address
Address bits A5 to A0 can be used to address a total of 64 registers.