
B–64113EN–1/01
1. AXIS CONTROL
75
Number DescriptionMessage
5198 FSSB : ID DATA NOT
READ
The initial ID information for the amplifi-
er cannot be read because of a failure
in the temporary assignment.
5311 FSSB: ILLEGAL CON-
NECTION
A connection related to FSSB is illegal.
This alarm is issued when either of the
following is found:
1 Two axes having adjacent servo
axis numbers (parameter No. 1023),
odd number and even number, are
assigned to amplifiers to which dif-
ferent FSSB systems are con-
nected.
2 The system does not satisfy the re-
quirements for performing HRV con-
trol, and use of two pulse modules
connected to different FSSB sys-
tems having different FSSB current
control cycles is specified.
In a full–closed system with a built–in absolute position detector (serial
pulse coder) and incremental linear scale, a coordinate system is set up,
using absolute position data received from the built–in absolute position
detector when the power is switched on. After this, position control is
carried out using the linear scale incremental data. Because the machine
position obtained immediately after the power is switched on is tentative,
obtaining the accurate machine position requires making a manual
reference position return.
Even before a reference position return is made, using this function
enables a stroke limit, although the machine position obtained when the
power is switched on is approximate.
Note that this function is not intended to use an incremental linear scale
as an absolute position detector.
This function is an option.
CNC
Absolute position detection at
power–on time
Serial pulse coder
(absolute position detector)
Linear scale (incremental)
Ordinary position control
Fig. 1.4.4 System using tentative absolute coordinate system setting
1.4.4
Tentative Absolute
Coordinate Setting
General