Chapter 11 Motion Control Instructions 
11-7 
11.3  Single-axis Instructions 
  MC_Power 
FB/FC  Explanation  Applicable model 
FB 
MC_Power is used to enable or disable the corresponding servo axis.   
 
  Input Parameters 
Parameter name  Function  Data type 
Validation timing 
Axis 
Specify the number of the 
axis which is to be 
controlled.   
USINT 
of Section 2.2. 
(The variable 
When Enable 
changes to TRUE 
Enable 
executed when Enable 
changes from FALSE to 
BOOL 
TRUE or FALSE 
(FALSE) 
When Enable 
changes to TRUE 
EnablePositive 
 
allowed to move forward 
only under the condition 
that Enable is TRUE and 
EnablePositive is also 
BOOL 
TRUE or FALSE 
(FALSE) 
When Enable 
changes to TRUE 
EnableNegative 
allowed to move reversely 
only under the condition 
that Enable is TRUE and 
EnableNegative is also 
BOOL 
TRUE or FALSE 
(FALSE) 
When Enable 
changes to TRUE 
Buffermode 
MC_Power when Enable 
MC_Buffer 
Mode 
1: mcBuffered 
When Enable 
changes to TRUE 
Note:   
Motion control instructions can control servo axes for corresponding motions only after Power ON. When 
Power OFF, no motion control instructions can be executed. 
 
  Output Parameters 
Function  Data type  Valid range 
Status  TRUE when the axis is enabled.    BOOL  TRUE/FALSE 
Busy 
TRUE when the instruction is being executed. 
BOOL  TRUE / FALSE 
Active 
TRUE when the axis is being controlled. 
BOOL  TRUE / FALSE 
Error 
TRUE when an error occurs in execution of the 
instruction. 
BOOL  TRUE / FALSE 
MC_Power
Axis Status
MC_Power_instance
Enable
EnablePositive
Busy
Active
EnableNegative
BufferMode
Error
ErrorID