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Chapter 12 Robot Control Statements
12-83
ST_OffSrvLock (Statement) [Ver.1.9 or later]
Function
Releases servo lock for the specified axis. (Exclusively designed for four-axis robots)
Format
ST_OffSrvLock <specified axis>
Explanation
Provides a function similar to the
OFF SVLOCK
instruction in the conventional
language.
Servo lock refers to the state where the robot arm is controlled to keep its position.
When it is released, the robot arm is not kept in its position but moved by an external
force applied to it.
Related Term
ST_OnSrvLock
Notes
(1) No operation command can be executed for an axis for which servo lock is
released.
(2) Set release of servo lock while the robot is in stopped state. If set during path
operation, an error may result.
(3) Execute this command in a TAKEARMed task that has obtained arm
semaphore. If the command is executed without arm semaphore obtained, Error
"21F7 Cannot take arm semaphore" will result.
(4) If bit 2 of the value set to "25: Current limit reset" in the operating conditions is
"0" (initial value), servo lock release is reset (to cause servo lock) upon motor
power on. To validate servo lock release immediately after motor power on, set
"+2" as the current limit reset value.
Note: Setting example of operating condition "25: Current limit reset"
PWM SVLock Curlmt
* * *
If only SVLock is effective 0 1 0 = 2
If all is effective 1 1 1 = 7
Example
ST_OffSrvLock 1 'Release servo lock for the 1st axis.
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