Beckhoff KL4494, Руководство пользователя

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Access from the user program
KL4494 33 Version: 2.0.0
R15: Alignment register
Via the alignment register bits, the Bus Coupler arranges the address range of an analog terminal such that
it starts at a byte boundary.
R16: Hardware version number
Register R16 contains the hardware version of the terminal; this value cannot be changed.
R17: Hardware compensation for analog input - offset (B
a
)
This register is used for the offset compensation of the analog input (see equation 1.1).
R18: Hardware compensation for analog input - gain (A
a
)
This register is used for the gain compensation of the analog input.
Scaling: Gain factor = R18 x 2
-12
(see equation 1.1)
Example: 4096
dec
(0x1000), equivalent to a gain factor of 1
R19: Hardware compensation for analog output - offset (B
a
)
This register is used for the offset compensation of the analog output (see equation 1.1).
R20: Hardware compensation for analog output - gain (A
a
)
This register is used for the gain compensation of the analog output.
Scaling: Gain factor = R20 x 2
-15
(see equation 1.1)
Example: 32768
dec
(0x1000), equivalent to a gain factor of 1
R21 Overrange-Limit - OvRL (Y
a
)
This limit value limits the maximum measuring range of the input terminal (see equation 1.0). If it is
exceeded, the associated status bit is set, and the maximum value is displayed.
R22 Underrange-Limit - UnRL (Y
a
)
If the value falls below this limit, the associated status bit is set, and the minimum value is displayed (see
equation 1.0).
R31: Code word register
• If you write values into the user registers without first entering the user code word (0x1235) into the
code word register, the terminal will not accept the supplied data.
• 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 SEEPROM registers
and are therefore retained if the terminal is restarted.
The code word is reset with each restart of the terminal.