Siemens SINUMERIK 840Di Function Manual page 1074

Detailed description
2.12 Block descriptions
END_VAR
Description of formal parameters
The following table lists all of the formal parameters of the brake test function
Formal parameters of brake test function
Signal
Start
Ack
Bclosed
Axis
TimerNo
TV_BTactiv
TV_Bclose
TV_FeedCommand I
TV_FXSreched
TV_FXShold
CloseBrake
MoveAxis
Done
Error
State
Error identifiers
Error identifiers
State
0
1
2
3
4
2-162
Error : BOOL ;
State : BYTE ;
I/O
I
I
I
I
I
I
I
I
I
Q
Q
Q
Q
Q
Meaning
No error
Start conditions not fulfilled, e.g., axis not under closedloop control/brake closed/axis
disabled
No NC checkback in "Brake test active" signal on selection of brake test
No "Brake applied" checkback by input signal BClosed
No travel command output (e.g., axis motion has not been started)
//Error byte
Type Remarks
BOOL Start brake test
BOOL Acknowledge error
BOOL Checkback input whether Close Brake is activated
(singlechannel - PLC)
INT Axis number of axis to be tested
TIMER Timer from user program
S5TIME Monitoring time value -> brake test active, check of axis
signal DBX71.0
S5TIME Monitoring time value -> close brake Check of input
signal Bclosed after output CloseBrake has been set.
S5TIME Monitoring time value -> issue travel command Check
travel command after MoveAxis has been set.
S5TIME Monitoring time value -> fixed stop reached
S5TIME Monitoring time value -> test brake
BOOL Request for close brake
BOOL Request to initiate travel movement
BOOL Test successfully completed
BOOL Error occurred.
BYTE ErrorStatus
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Power Line Basic PLC Program (P3)