CouplerReset

CouplerReset 1:

The CouplerReset function block can be used to execute a reset of the coupler via the 2-byte PLC interface. In a coupler reset the current terminal configuration, for example, is read in again by the coupler via the K-bus (the terminal bus), and communication on the K-bus is reinitialized. Existing K-bus error messages for the coupler are reset. The STATE and CONTROL variables are used to perform a handshake with the coupler while the function block is being executed. These variables must therefore be linked with the status/control I/O variables of the 2-byte PLC interface in the TwinCAT System Manager.

VAR_INPUT

VAR_INPUT
     STATE   : PLCINTFSTRUCT;
     START   : BOOL;
     TMOUT   : TIME;
END_VAR

STATE: Status word of the 2-byte PLC interface. (PLCINTFSTRUCT)

START: The function block is activated by a positive edge at this input.

TMOUT: States the length of the timeout that may not be exceeded during execution of the function.

VAR_OUTPUT

VAR_OUTPUT
    CONTROL  : PLCINTFSTRUCT;
    BUSY     : BOOL;
    ERR      : BOOL;
    ERRID    : UDINT;
END_VAR

CONTROL: Control word of the 2-byte PLC interface (PLCINTFSTRUCT).

BUSY: This output is set when the block is activated, and remains set until execution of the function has been completed.

ERR: If an error should occur during the execution of the function, then this output is set, after the BUSY output has been reset.

ERRID: Supplies the error number when the ERR output is set.

Error number	Error description
0	no error
0x100	Error at initialisation of the communication via the 2 byte PLC interface
0x200	error during communication
0x300	Timeout-Error. The permitted execution time was exceeded
0x400	Wrong parameter value at register number
0x500	Wrong parameter value at table number

Example of a call in FBD:

VAR 
    IntfState AT%I*      : PLCINTFSTRUCT;
    IntfControl AT%Q*    : PLCINTFSTRUCT;
    CouplerReset1        : CouplerReset;
    Start_CouplerReset   : BOOL;
    CouplerReset_Busy    : BOOL;
    CouplerReset_Err     : BOOL;
    CouplerReset_ErrId   : UDINT;
END_VAR

CouplerReset 2:

The variables IntfState and IntfControl are linked with corresponding I/O variables in the TwinCAT System Manager.

Requirements

Development environment	Target system type	PLC libraries to include (category group)
TwinCAT v3.1.0	PC or CX (x86, x64, ARM)	Tc2_Coupler (IO)