ctrlX SAFETY "SafeMotion"
Fig. 56: IO mapper block “Safe OR“ (type 5)
____ Obligatory input
_ _ _ Optional input
Variables of the IO mapper block
Table 23: Input variable of the IO mapper block Safe OR
Input variable Type of input
SAFE-In 1 Safe input
SAFE-In 2 Safe input
SAFE-In 3 Safe input
SAFE-In 4 Safe input
Table 24: Output variable of the IO mapper block Safe OR
Output variable Possible target IDNs Possible target bits
SAFE-Out P‑0‑3261,
SMO: State machine control word
Bit 2 [enabling control signal
(EC)]
Maximum number of instances: 1
"Safe AND with protection against restart"
The IO mapper block "Safe AND with protection against restart" is used for the
parallel processing of multiple emergency stop signals (ES) or multiple mode
selection signals (MS), and for protection against restart by reset and start
inputs or start input only.
Function
The "SAFE-In_W1" and "In_W2" to "In_W4" inputs are ANDed. The result is con-
nected with the input of the restart lockout block ( ).
When the AND operation of the "SAFE-In_W1" and "In_W2" to "In_W4" inputs
provides logic 0, the output of the restart lockout block is set to logic "0". To
set this output to logic "1” again, a 0-1-0 change (with trigger to the falling
edge) has to be detected at the In_Start input.
If the optional "In_Reset" input is used, a 0-1-0 change (with trigger to the
falling edge) has to be detected here and then at the In_Start input. When this
has happened and stable logic "1" is still applied at the output of the AND
operation, the output of the restart lockout block is logic "1".
If the optional safe input "SAFE_In" is used, it is ANDed with the result of the
restart lockout block and the result is applied to the "SAFE-Out" output.
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