Omron NX-SL series, Instruction & Reference Manual

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4 Safety Function Blocks
4 - 102 NX-series Safety Control Unit Instructions Reference Manual (Z931)
 Introduction
This FB is an output drive device for a safety output.
The safety output is controlled through
S_OutControl using a signal from the function application
(ProcessControl/BOOL to control the process) and a signal from the safety application
(S_SafeControl/SAFEBOOL to control the safety function).
 Process Control Option Status (StaticControl)
• If StaticControl is FALSE, the function must be started again by changing ProcessControl to
TRUE after the FB starts or after the safety signal ( S_SafeControl ) feedback. An always-TRUE
signal for ProcessControl will not set S_OutControl to TRUE.
• If StaticControl is TRUE, it is not necessary to start the function again by changing ProcessControl
to TRUE after the FB starts or after the safety signal ( S_SafeControl ) feedback. As long as the
other conditions are met, an always-TRUE signal for ProcessControl will set S_OutControl to
TRUE.
Activate the StaticControl, S_StartReset, and S_AutoReset inputs only when you can ensure that no
hazardous state will occur as the result of starting the Safety CPU Unit.
Output Variables
Variable Data type Valid range Default Description
Ready BOOL TRUE or FALSE FALSE Refer to Safety FB Common Output Variables on page
4-4.
S_OutControl SAFEBOOL TRUE or FALSE FALSE Controls the connected actuator.
FALSE: Disables the connected actuator.
TRUE: Enables the connected actuator.
Error BOOL TRUE or FALSE FALSE Refer to Safety FB Common Output Variables on page
4-4.
DiagCode WORD Depends on state
code. 16#0000 Refer to Safety FB Common Output Variables on page
4-4.
Function