FB_TwinSAFE_connection

FB_TwinSAFE_connection 1:

The function block FB_TwinSAFE_connection is made for evaluating the TwinSAFE data which is transferred from one TwinSAFE communication partner to another TwinSAFE communication partner. The input parameters have to be linked to the SafetyQBx or SafetyIn signal of the corresponding TwinSAFE terminal. Please assure that the new linkage does not remove the already existing linkage. When RT Ethernet is used to transfer the TwinSAFE data, one parameter must be linked to SafetyQBx the other parameter has to be linked to Vardata of the network variable subscriber.

VAR_INPUT

VAR_INPUT
    TwinSAFETerminal AT%I* : TwinSAFE_Data; (* Additional link to "SafetyIn" e.g. KL1904, KL2904 or networkvariable subscriber *)
    TwinSAFELogic    AT%I* : TwinSAFE_Data; (* Additional link to "SafetyQBx" e.g. KL6904 *)
END_VAR

TwinSAFETerminal: TwinSAFE telegram which is transferred from one TwinSAFE communication partner to another TwinSAFE communication partner. This parameter has to be linked to SafetyIn (output data of a KL1904 or KL2904 or network variable subscriber). 

TwinSAFELogic: TwinSAFE telegram which is transferred from one TwinSAFE communication partner to another TwinSAFE communication partner. This parameter must be linked to SafetyQBx (output data of a KL6904). 

VAR_OUTPUT

VAR_OUTPUT
    nSafeTerminalData   : BYTE;
    nSafeLogicData      : BYTE;
    tCycleTime          : TIME;
    bConnectionInRun    : BOOL; 
    nFirstError         : WORD;
    nLastError          : WORD;
END_VAR

nSafeTerminalData: TwinSAFE data of TwinSAFETerminal.

nSafeTerminalData

description

.0

Channel 1 of TwinSAFE data (KL1904 Input 1, KL6904 Channel 1)

.1

Channel 2 of TwinSAFE data (KL1904 Input 2, KL6904 Channel 2)

.2

Channel 3 of TwinSAFE data (KL1904 Input 3, KL6904 Channel 3)

.3

Channel 4 of TwinSAFE data (KL1904 Input 4, KL6904 Channel 4)

.4

Channel 5 of TwinSAFE data (KL6904 Channel 5)

.5

Channel 6 of TwinSAFE data (KL6904 Channel 6)

.6

Channel 7 of TwinSAFE data (KL6904 Channel 7)

.7

Channel 8 of TwinSAFE data (KL6904 Channel 8)

nSafeLogicData: TwinSAFE data of TwinSAFELogic.

nSafeLogicData

description

.0

Channel 1 of TwinSAFE data (KL2904 Output 1, KL6904 Channel 1)

.1

Channel 2 of TwinSAFE data (KL2904 Output 2, KL6904 Channel 2)

.2

Channel 3 of TwinSAFE data (KL2904 Output 3, KL6904 Channel 3)

.3

Channel 4 of TwinSAFE data (KL2904 Output 4, KL6904 Channel 4)

.4

Channel 5 of TwinSAFE data (KL6904 Channel 5)

.5

Channel 6 of TwinSAFE data (KL6904 Channel 6)

.6

Channel 7 of TwinSAFE data (KL6904 Channel 7)

.7

Channel 8 of TwinSAFE data (KL6904 Channel 8)

tCycleTime: Cycle time in ms which is needed to exchange the TwinSAFE telegram between the TwinSAFE communication partner of this connection.

bConnectionInRun: When there is no error in the TwinSAFE connection the value is set to TRUE. When the value is FALSE the parameter nSafeTerminalData and nSafeLogicData are set to 0.

nFirstError: Gives an error code for the first error in the connection. The error is resetted as soon as bConnectionInRun is TRUE again.

nLastError: Gives an error code for the last error in the connection. The error is resetted as soon as bConnectionInRun is TRUE again.

errorvalue

description for nFirstError and nLastError

0x0001

Watchdog in TwinSAFETerminal

0x0002

Watchdog in TwinSAFELogic

0x0004

CRC Error in TwinSAFETerminal

0x0008

CRC Error in TwinSAFELogic

0x0010

Slave Error in TwinSAFETerminal

0x0020

Slave Error in TwinSAFELogic

0x4000

not specified error in TwinSAFETerminal

0x8000

not specified error in TwinSAFELogic

Example for the FB call in FBD: 

PROGRAM MAIN
VAR
    fbTwinSAFE_connection   : FB_TwinSAFE_connection;
    nSafeKL1904_data        : BYTE;
    nSafeKL6904_ata         : BYTE;
    CycleTime               : TIME;
    bConnectioninRun        : BOOL;
    nFirstErr               : WORD;
    nLastErr                : WORD;
    KL1904_input_1          : BOOL;
END_VAR
FB_TwinSAFE_connection 2:

In the above example data of a TwinSAFE connection are written to the connected variables. When the output bConnectionInRun is FALSE the outputs nSafeTerminalData and nSafeLogicData are set to 0.

The linkage of the input data of the connection must be done by marking the parameter TwinSAFETerminal and chossing "Change Link..." from the context menu

FB_TwinSAFE_connection 3:

 

and choosing the correct SafetyIn variable in the upcoming dialog.

FB_TwinSAFE_connection 4:

 

When using RT Ethernet for the TwinSAFE communication please choose the corresponding subscriber variable.

FB_TwinSAFE_connection 5:

 

The linkage of the output data of the connection must be done by marking the parameter TwinSAFELogic and choosing "Change Link..." from the context menu and choosing the correct SafetyQBx variable in the upcoming dialog.

FB_TwinSAFE_connection 6:

Requirements

Development environment

Target system type

IO-Hardware

PLC libraries to include

TwinCAT v2.10.0 Build > 914

PC (i386)

KLx904

TcTwinSAFE.Lib

( Standard.Lib, TcBase.Lib and TcSystem.Lib are included automatically )