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.

- 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