IAI America XSEL-S - Manual (Page 131)

Chapter 3 Programs
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Caution
(1) If there are any errors in synchronous electronic CAM movement settings, which are specified in
variables of operand 2, error No. 455 “Extension motion control board synchronous electronic CAM
movement setting error” occurs. Info.2 of the error list indicates the variable number of the invalid
setting (hexadecimal display).
x Invalid variable: Master axis number (storage variable)
 Specified master axis number is invalid or invalid.
 Specified master axis is a synchronized-controlled slave axis or ZR unit axis (in case the
master axis is a main CPU control axis).
 The specified master axis and slave axis are the same axis (in case the master axis is a
extension motion control board control axis).
x The specified master axis is an axis or channel of a extension motion control board different
from slave axes (in case the master axis is a extension motion control board control axis or
pulse input channel)
x Invalid variable: Stroke length/stroke end position storage position No.
 The specified position No. is invalid or position data is invalid.
(2) If the master axis type of synchronous electronic CAM movement settings is specified to be main
CPU control axis, the BASE command settings become valid for the master axis number. Moreover,
the GRP command settings are invalid for position data storing stroke length and stroke end position.
(3) If multiple extension motion control boards are installed, electronic CAM table data of a board to
which slave axes are connected is used.
(4) If slave axes started synchronization while the master axis is moving, excessive speed and/or
acceleration and deceleration may occur, leading to an error. Lower the speed and/or acceleration of
the master axis when the slave axis synchronization movement is started.
(5) Excessive speed and/or acceleration/deceleration may occur during movement according to the
electric CAM table, leading to an error. In this case, change the speed, acceleration/deceleration, and
electronic CAM tables of the master axis to set speed and acceleration/deceleration permitted to the
axis.
(6) The right to use slave axes that started synchronization is owned exclusively by the slave axis
movement program that executed the XCAS command until the XSYE command (stopping
synchronous movement) is executed or the program is finished. For this reason, if the axes are used
by other programs, error No. 449 “Extension motion control board axis duplication error” occurs.
Moreover, error No. 449 occurs even if a movement command is executed on axes that finished
synchronous movement, even in the same program. Execute the XSYE command in order to perform
the next movement after synchronous movement.