Siemens SINUMERIK 840D sl Function Manual page 304

Connecting sensors and actuators
8.6 Safe Brake Test (SBT)
m00: NOP 0;
AUF DB37
end: NOP 0
304
OPEN DB37
U M 111.2
FP M 111.5
S M 111.7
O M 111.3
O M 111.4
FP M 110.3
R DBX 28.7
UN DBX6
3.1
U M 111.0
U M 110.7
SPBN m002
L MB 115
OW W#16#10
T DBB8
CALL FC18
Start :=M 111.7
Stop := FALSE
Funct := B#16#5
Mode := B#16#1
AxisNo := 7
Pos := -5.000000e+000,
FRate := 1.000000e+003,
InPos := M 113.0,
Error := M 113.1
State := MB 114
U M 113.0
O M 113.1
FP M 113.2
R M 111.7
U E 3.7
SPBN end
U M 111.4
= DBX28.1
R M 111.0
R M 110.7
//Brake test, Z axis
//Moveaxis
//FC18 start
//Start FC18
//Test successfully completed
//Error has occurred
//Edge marker
//Request, PLC-controlled axis
//Checkback signal, axis controlled by PLC
//Start brake test for FB
//Brake test running
//Conditional jump
//Load marked channel status
//Select bits
//Request channel axis
//Traverse Z axis
//Start of traversing motion
//Not used
//Mode: Axis mode
//Traversing: Incremental
//Axis number of axis to be traversed, Z axis
//Traversing distance: Minus 5 mm
//Feedrate: 1000 mm/min
//Position reached
//Error has occurred
//Error status
//Open axis DB
//Position reached
//Error has occurred
//Edge marker
//Start FC18
//Reset MCP
//Conditional jump
//Error has occurred
//Acknowledge error with axis reset
//Start FB11
//Brake test running
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated