Description Of Fb11 - Siemens Sinumerik 840D sl Function Manual

Connecting Sensors/Actuators
7.6 Safe Brake Test (SBT)
7.6.7

Description of FB11

Declaration of the function:
VAR_INPUT
Start : BOOL ;
Ackn : BOOL ;
Bclosed : BOOL ;
Axis : INT ;
Timer No : TIMER ;
TV_BTactiv : S5TIME ;
TV_Bclose : S5TIME ;
TV_FeedCommand : S5TIME ; //TimeValue --> force FeedCommand
TV_FXSreached : S5TIME ;
TV_FXShold : S5TIME ;
END_VAR
VAR_OUTPUT
CloseBrake : BOOL ;
MoveAxis : BOOL ;
Done : BOOL ;
Error : BOOL ;
State : BYTE ;
END_VAR
The following table lists all of the formal parameters of the brake test function:
Signal Type
Start E
Ack E
Bclosed E
Axis E
TimerNo E
TV_Btactiv E
TV_Bclose E
TV_FeedCommand E
TV_FXSreached E
TV_FXShold E
CloseBrake A
MoveAxis A
Done A
7-334
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
//Start of the brake test
//Acknowledge error
//Brake closed input (single channel -- PLC)
//Testing axis No.
//Timer from user
//TimeValue --> brake test active
//TimeValue --> close brake
//TimeValue --> Fixed stop reached
//TimeValue --> test brake
//Signal Close brake
//do move axis
//Errorbyte
Type
BOOL Starts the brake test
BOOL Acknowledge fault
BOOL Feedback signal input as to whether the brake has been
closed (single--channel
INT Number of the axis to be tested
TIMER Timer from user program
S5TIME Monitoring time --> brake test active. Check the axis signal
DBX71.0
S5TIME Monitoring time --> close brake. Check the input signal
Bclosed after the CloseBrake output was set.
S5TIME Monitoring time --> output traversing command. Check
traversing commands after MoveAxis has been set.
S5TIME Monitoring time --> fixed stop reached
S5TIME Monitoring time --> test brake
BOOL Request, close brake
BOOL Request, initiate traversing motion
BOOL Test successfully completed
Remark
PLC)
© Siemens AG 2015 All Rights Reserved
10/15