ABB AC500-S Safety User Manual page 266

Configuration and programming
AC500-S Libraries > SafetyBlocks_PLCopen_AC500_v22.lib
4.6.6.1 Introduction
Generic parameters and diagnostic codes of PLCopen Safety POUs are presented below.
Table 31: General Input Parameters
Name Type
Activate BOOL
S_StartReset BOOL
S_AutoReset BOOL
Reset BOOL
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Description
Variable or constant.
Activation of the FB. Initial value is FALSE.
This parameter can be connected to the variable, which represents the
status (Active or Not Active) of the relevant safety device. This ensures
no irrelevant diagnostic information is generated if a device is disabled.
If FALSE, all output variables are set to the initial values.
If no device is connected, a static TRUE signal must be assigned.
Variable or constant.
FALSE (= initial value): Manual reset when PES is started (warm or
cold).
TRUE: Automatic reset when PES is started (warm or cold).
This function shall only be activated if it is ensured that no hazard can
occur at the start of the PES. Therefore the use of the Automatic Circuit
Reset feature of the function blocks requires implementation of other
system or application measures to ensure that unexpected (or unin-
tended) start-up does not occur.
Variable or constant.
FALSE (= initial value): Manual reset when emergency stop button is
released.
TRUE: Automatic reset when emergency stop button is released.
This function shall only be activated if it is ensured that no hazard can
occur at the start of the PES. Therefore the use of the Automatic Circuit
Reset feature of the function blocks requires implementation of other
system or application measures to ensure that unexpected (or unin-
tended) startup does not occur.
Variable. Initial value is FALSE.
Depending on the function, this input can be used for different pur-
poses:
n Reset of the state machine, coupled error and status messages as
indicated via DiagCode, when the error cause has been removed.
This reset behavior is designed as an error reset.
n Manual reset of a "restart interlock" ("Wiederanlaufsperre" in
German) by the operator (
designed as a functional reset.
n Additional FB-specific reset functions.
This function is only active on a signal change from FALSE to TRUE. A
static TRUE signal causes no further actions, but may be detected as
an error in some FBs.
The appropriate meaning must be described in every FB.
AC500-S
Ä EN 954-1). This reset behavior is
30.03.2017