PARAMETER CHECK SUM Function Additional Manual Page 5

Additional Manual
2003/09/05
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FANUC Series 16i/18i/21i-MB
Parameter check sum function Specifications
A
-79242EN
Drawing No.
Title
Page
In case that the machining condition selecting function is used,
parameters in the following table are also excluded from the check
sum.
Parameters excluded from the check sum
(machining condition selecting function) (1/2)
Parameter No. Meaning of data
1432 Maximum cutting feed rate for each axis in the AI
contour control mode or look ahead control mode
1730 Maximum feed rate for arc radius R
1731 Arc radius value corresponding to a maximum feed rate
1769 Time constant for linear acceleration/deceleration or
bell–shaped acceleration/deceleration during cutting
feed for each axis
1770 - 1771 Parameter (for look–ahead control) for setting an
acceleration for linear acceleration/deceleration before
interpolation
1772 Time constant for bell–shaped acceleration/deceleration
of acceleration time fixed type before look–ahead
interpolation
1783 Allowable speed difference for the speed difference
based corner deceleration function (linear
acceleration/deceleration before interpolation)
1785 Parameter for determining an allowable acceleration
when the feed rate is set by acceleration
1788 Permissible acceleration change level for each axis in
speed control based on acceleration changes for jerk
control.
1789 Permissible acceleration change level for each axis in
speed control based on acceleration changes for jerk
control in AI nano contouring control when linear
interpolation is repeated.
1790 Ratio of the jerk change time in smooth bell-shaped
acceleration/deceleration before interpolation.
8400 - 8401 Parameter for determining a linear
acceleration/deceleration before interpolation
8410 Allowable velocity difference in velocity determination
considering the velocity difference at corners
8416 Look–ahead bell–shaped acceleration/deceleration
before interpolation
8470 Parameter for determining allowable acceleration in
velocity calculation considering acceleration
13634 Level in selecting at the present moment of the AI
contour control mode or look ahead control mode
13680 Level in selecting at the present moment of at the time
of high-precision contour control mode use.

Contents Summary of PARAMETER CHECK SUM Function Additional Manual

  • Page 1FANUC Series 16i/18i/21i-MB Parameter check sum function Specifications Contents 1 GENERAL................................ GENERAL ................................................................ ................................................................................................ .......
  • Page 2Parameter check sum function 1 General This function calculates and keeps the standard check sum of CNC parameters. And it also calculates a check sum at CNC power-on, and check whether it equals to the standard check sum or not. 2 Details When parameter CKS (No. 13730 # 0) is changed from ”0” to ”1
  • Page 3The power on check sum, the standard check sum, the calculation date and the calculation time are displayed in the diagnosis screen. No. Message Meaning of data 680 POWER ON CHECK SUM The parameter check sum which is calculated at power-on when parameter CKS (No. 13730 # 0) is set to "1" is displaye
  • Page 4The check sum is not the sum of all parameters. The following parameters are excluded from the check sum. (1) Setting parameters (2) Parameters shown in the following table (Parameters excluded from the check sum). (3) Parameters specified by parameter No. 13731 to 13750 (4) Parameters specified by
  • Page 5In case that the machining condition selecting function is used, parameters in the following table are also excluded from the check sum. Parameters excluded from the check sum (machining condition selecting function) (1/2) Parameter No. Meaning of data 1432 Maximum cutting feed rate for each axis in
  • Page 6Parameters excluded from the check sum (machining condition selecting function) (2/2) Parameter No. Meaning of data 19522 Permissible acceleration change level for each axis in speed control based on acceleration changes for jerk control. 19523 Permissible acceleration change level for each axis in
  • Page 73 Parameter #7 #6 #5 #4 #3 #2 #1 #0 13730 CSR CKS [Data type] Bit CKS At power-on, checking of the parameter check sum is 0: Not performed. 1: Performed. NOTE When parameter CKS (No. 13730 # 0) is changed from ”0” to ”1”, the standard check sum is calculated. Please cancel all alarms before setting
  • Page 813731 Parameter number 1 to exclude from check sum : : 13750 Parameter number 20 to exclude from check sum [Data type] Word [Valid data range ] 0 to +65535 Set parameter number which needs to be excluded from a check sum. 13751 Minimum value 1 of parameter number to exclude from check sum 13752 Maxi
  • Page 94 Alarm and message No. Message Meaning of data 5340 PARAMETER CHECK SUM ERROR Because a parameter was modified, the check sum of parameter did not equal to the standard check sum. Please correct parameter value or create the standard check sum again. Title FANUC Series 16i/18i/21i-MB Parameter chec