HSBY_RD

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.

The HSBY_RD EFB checks system word %SW60 to see if a Hot Standby configuration exists:

If a Hot Standby configuration is present the contents of the command register are returned and the HSBY_ConfigurationFound output parameter is set to 1.
If a Hot Standby configuration is not present the contents of the command register are returned and the HSBY_ConfigurationFound output parameter 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_RD_Instance (HSBY=>HSBY_ConfigurationFound, 
        INV_KEY=>InvalidateKeypad, PCA_RUN=>PLC_A_Running,
        PCB_RUN=>PLC_B_Running, SBY_OFF=>StandbyOff,
        EXC_UPD=>ExecUpdate, SWP_MB1=>SwapAddressModbusPort1)

Representation in ST

Representation:

HSBY_RD_Instance (HSBY=>HSBY_ConfigurationFound, 
        INV_KEY=>InvalidateKeypad, PCA_RUN=>PLC_A_Running,
        PCB_RUN=>PLC_B_Running, SBY_OFF=>StandbyOff,
        EXC_UPD=>ExecUpdate,
        SWP_MB1=>SwapAddressModbusPort1);

Parameter Descriptions

Description of the output parameters:

Parameter	Data type	Meaning
HSBY	BOOL	1 = Hot Standby configuration found 0 = Hot Standby configuration not found
INV_KEY	BOOL	1 = The submenu for the Hot Standby PLC button is disabled. 0 = The submenu for the Hot Standby PLC button is not disabled.
PCA_RUN	BOOL	For the local rack PLC with the Hot Standby CPU A: 1 = Command Register is selected for RUN 0 = Command Register is selected for OFFLINE
PCB_RUN	BOOL	For the local rack PLC with the Hot Standby CPU B: 1 = Command Register is selected for RUN 0 = Command Register is selected for OFFLINE
SBY_OFF	BOOL	1 = ??? 0 = The Standby PLC switches to the OFFLINE mode as soon as both PLCs receive a different program.
EXC_UPD	BOOL	1 = Operating System update in the Standby-PLC is possible with the primary CPU PLC still running. 0 = ??? (After Operating System Update, the Standby CPU PLC changes back to the ONLINE mode.)
SWP_MB1	BOOL	If a switchover has occurred, for Modbus ports 1: 1 = There is no swapping of addresses 0 = There is swapping of address
SWP_MB2	BOOL	Not used. Reserved
SWP_MB3	BOOL	Not used. Reserved