Instruction manual

4. SERVO SYSTEM CPU DEVICES
4 − 16
(4) Speed switching point designation flag (M2040)
........................................................................Signal sent from SCPU to PCPU
The speed switching point designation flag is used when a speed change is
designated at the pass point in constant-speed control.
(a) By turning M2040 ON before the start of constant-speed control (before the
servo program is started using the SVST instruction), control can be
executed with a speed change at the start of the pass point.
V
t
OFF
Pass points in
constant-speed control
(here, a speed change
is designated at P3)
ON
M2040 OFF
V
t
P1 P2 P3 P4
M2040 ON
OFF
Speed switching point
designator flag
SVST instruction
Start accept flag
P1 P2 P3 P4
ON
OFF
ON
OFF
Pass points in
constant-speed control
(here, a speed change
is designated at P3)
Speed switching point
designator flag
SVST instruction
Start accept flag
(b) After completion of start accept processing, the speed switching point
designation flag can be turned OFF at any time.
(5) System setting error flag (M2041)...................Signal sent from PCPU to SCPU
When the power is switched ON, or when the servo system CPU is reset, the
system setting data set with a peripheral device is input, and a check is
performed to determine if the set data matches the module mounting status
(of the CPU base unit and extension base units).
• ON..............Error
• OFF............ Normal
(a) The ERROR LED on the front of the CPU will switch ON when an error
occurs. Moreover, a log of errors which have occurred can be referred to
at a peripheral device (device running SW2SRX-GSV22PE).
(b) Positioning cannot be started when M2041 is ON. To start the positioning
operation, eliminate the error cause, and either switch the power back ON
or execute a servo system CPU reset.
REMARK
A slot designated as "not used" at the system setting data will be regarded as
"not used" even if loaded with a module.