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.

EN and ENO can be configured as additional parameters.

Representation in FBD

Representation in LD

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.