Beckhoff KL2521 Series, Documentation

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Access from the user program
KL2521 33 Version: 2.1
• R32: Feature register
[0x0030]
This register specifies the operation modes of the terminal. Thus, for instance, a user-specific scaling
can be enabled for the analog I/Os.
Feature bit no. Description of the operation mode
Bit 0…Bit1 - No function
Bit 2 0 [0] Watchdog timer active
In the delivery state, the watchdog timer is switched on. Either the manufacturer's
of the user's switch-on value is output if the watchdog overflows.
Bit 3 1 [0] Signed amount representation
Signed amount representation is active instead of two's complement representa-
tion. (-1 = 0x8001).
Bit 4 1 [1] The counter is cleared on a positive edge of the Counter_Clear bit in the con-
trol byte (Control.5)
Bit 5 1 [1] Ramp function active
Bit 6 0/1 [0] Ramp base frequency
• 0:10 Hz / s
• 1: 1000 Hz / s
Bit 7 0/1 [0] Input mode
• 0:relative
• 1: direct
Bit 8 0/1 [0] Behavior when watchdog triggered
• 0:Manufacturer's switch-on value
• 1: User switch-on value
Bit 9 1 [0] Travel distance control active
Bit 10 0/1 [0] Counter
• 0: delete
• 1: set
Bit 11…12 - No function
Bit 13…15 Pos. logic Neg. logic [000] Operation mode Range of values
000 100 Frequency modulation 0 - 500 kHz
001 101 Pulse-direction control
010 110 Incremental encoder
• R35: User switch-on value
If the user switch-on value has been enabled with bit R32.8 [
}
33] of the feature register, the terminal
sets its output to the user switch-on value in place of the manufacturer switch-on value on the
occurrence of a system reset or a watchdog timer overflow (terminal has not received any process data
for 100 ms).
• R36: Base frequency 1 (low word)
This register contains the low word of the base frequency 1.
The base frequency 1 is used if
◦ the ramp function is deactivated and
◦ the Frequency_Selection bit (Control.0) is 0.
• R37: Base frequency 1 (high word)
This register contains the high word of the base frequency 1.
The base frequency 1 is used if
◦ the ramp function is deactivated and
◦ the Frequency_Selection bit (Control.0) is 0.
• R38: Base frequency 2 (low word)
This register contains the low word of the base frequency 2.
The base frequency 2 is used if
◦ the ramp function is deactivated and
◦ the Frequency_Selection bit (Control.0) is 1.