Siemens SINUMERIK 840Di Function Manual page 1341

The brake test is divided into the following steps:
Brake test sequence
Step
Start brake test
Close brake
Issue travel command
Issue test travel command
Wait for hold time
Deselect brake test/
open brake
Issue Test O.K.
Declaration of the function
FUNCTION_BLOCK FB 11
VAR_INPUT
END_VAR
VAR_OUTPUT
END_VAR
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Start : BOOL ;
Ack : BOOL ;
Bclosed : BOOL ;
Axis : INT ;
TimerNo : TIMER ;
TV_BTactiv : S5TIME ;
TV_Bclose : S5TIME ;
TV_FeedCommand : S5TIME ;
TV_FXSreached : S5TIME ;
TV_FXShold : S5TIME ;
CloseBrake : BOOL ;
MoveAxis : BOOL ;
Done : BOOL ;
Error : BOOL ;
State : BYTE ;
Expected checkback
DBX 71.0 = 1
Bclosed = 1
DBX 64.6 Or DBX 64.7
DBX62.5 = 1
DBX62.5 = 1
DBX71.0 = 0
//Start of brake test
//Acknowledge error
//Brake closed input (single channel - PLC)
//Testing axis no.
//Timer from user
//TimeValue -> brake test active
//TimeValue -> close brake
//TimeValue -> force FeedCommand
//TimeValue -> fixed stop reached
//TimeValue -> test brake
//Signal close brake
//Do move axis
//Error byte
Detailed Description
2.12 Block descriptions
Monitoring time value
TV_BTactiv
TV_Bclose
TV_FeedCommand
TV_FXSreached
TV_FXShold
TV_BTactiv
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