HSBY_ST

Function Description

This EFB allows you to use the Hot Standby function. It searches (together with the other Hot Standby EFBs) the configuration of the respective Quantum PLC for the required components.

These components refer to hardware that is actually connected. Therefore, the correct behavior of this EFB on the simulators cannot be guaranteed.

This EFB is used to read the IEC Hot Standby status register %SW61. If there is no Hot Standby configuration present, the HSBY output is set to 0.

and can be configured as additional parameters.

Representation in FBD

Representation:

Representation in LD

Representation:

Representation in IL

Representation:

CAL HSBY_ST_Instance (HSBY=>HSBY_ConfigurationFound,
         THIS_OFF=>PLC_Offline, THIS_PRY=>Primary_PLC,
         THIS_SBY=>Standby_PLC,
         REMT_OFF=>Remote_PLC_Offline,
         REMT_PRY=>PrimaryRemote_PLC,
         REMT_SBY=>StandbyRemote_PLC,
         LOGIC_OK=>IdenticalPrograms,
         THIS_ISA=>HSBY_ModuleSwitchA,
         THIS_ISB=>HSBY_ModuleSwitchB)

Representation in ST

Representation:

HSBY_ST_Instance (HSBY=>HSBY_ConfigurationFound,
         THIS_OFF=>PLC_Offline, THIS_PRY=>Primary_PLC,
         THIS_SBY=>Standby_PLC,
         REMT_OFF=>Remote_PLC_Offline,
         REMT_PRY=>PrimaryRemote_PLC,
         REMT_SBY=>StandbyRemote_PLC,
         LOGIC_OK=>IdenticalPrograms,
         THIS_ISA=>HSBY_ModuleSwitchA,
         THIS_ISB=>HSBY_ModuleSwitchB);

Parameter Descriptions

Description of output parameters:

Parameter	Data type	Meaning
HSBY	BOOL	1 = Hot Standby configuration found 0 = Hot Standby configuration not found
THIS_OFF	BOOL	1 = This PLC is offline 0 = This PLC is not offline
THIS_PRY	BOOL	1 = This PLC is the Primary CPU PLC 0 = This PLC is not the Primary CPU PLC
THIS_SBY	BOOL	1 = This PLC is the Standby CPU PLC 0 = This PLC is not the Standby CPU PLC
REMT_OFF	BOOL	1 = The other (remote) PLC is OFFLINE 0 = The other (remote) PLC is not OFFLINE
REMT_PRY	BOOL	1 = The other PLC is the Primary CPU PLC 0 = The other PLC is not the Primary CPU PLC
REMT_SBY	BOOL	1 = The other PLC is the Standby CPU PLC 0 = The other PLC is not the Standby CPU PLC
LOGIC_OK	BOOL	1 = The programs for both PLCs are identical and application mismatch is active. 0 = The programs are not the identical.
THIS_ISA	BOOL	1 = This PLC chose the CPU with the lower IP address between both Hot Standby CPUs. This is the Hot Standby CPU A. 0 = This is not CPU A.
THIS_ISB	BOOL	1 = This PLC chose the CPU with the higher IP address between both Hot Standby CPUs. This is the Hot Standby CPU B. 0 = This is not CPU B.