
B--63003EN--1/02
1. AXIS CONTROL
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Connecting the CNC control section to servo amplifiers via a high--speed
serial bus (FANUC Serial Servo Bus, or FSSB), which uses only one fiber
optics cable, can significantly reduce the amount of cabling in machine
tool electrical sections.
In a system using the FSSB, it is necessary to set up the following
parameters to specify its axes. (The other parameters should be specified
as usual.)
D Parameter No. 1023
D Parameter No. 1905
D Parameter Nos. 1910 to 1919
D Parameter Nos. 1936 and 1937
These parameters can be specified using the following methods:
1. Manual setting 1
Parameters are defaulted according to the setting of parameter No.
1023. There is no need to specify parameter Nos. 1905, 1910 to 1919,
1936 and 1937. No automatic setting is used. Note that some
functions are unusable.
2. Automatic setting
Axis settings are calculated automatically according to the
interrelationships between axes and amplifiers entered on the FSSB
setting screen. Parameter Nos. 1023, 1905, 1910 to 1919, 1936, and
1937 are specified automatically according to the results of the
calculation.
3. Manual setting 2
Parameter Nos. 1023, 1905, 1910 to 1919, 1936, and 1937 are
specified according to manually entered values. The user must be
totally familiar with the meaning of each parameter before entering
any values.
1.4.3
FSSB Setting
Overview