FB_SEND_057_SNVT_power_f

FB_SEND_057_SNVT_power_f 1:

This function block sends the following LON output variable (nvo):

SNVT Name: SNVT_power_f.

SNVT number: 057.

Description: Power (watt).

Inputs

VAR_INPUT
  wNVIndex     : WORD;
  rValue       : REAL;
  bStart       : BOOL;
  bSendInit    : BOOL := bSendInitDefault;
  bAuto        : BOOL := bAutoDefault;
  rValueLimit  : REAL := 1;
  tMinSendTime : TIME := tMinSendTimeDefault;
  tMaxSendTime : TIME := tMaxSendTimeDefault;
  bDisabled    : BOOL := FALSE;
END_VAR

Name	Type	Description
wNVIndex	WORD	Unique index. This index is required for binding the LON nodes. A maximum of 62 SNVTs are permitted per LON terminal. Values between 0 and 61 are possible.
rValue	REAL	Min: -3.40E+38 / Max: 3.40E+38.
bStart	BOOL	A positive edge starts the send process (irrespective of bAuto).
bSendInit	BOOL	Automatically sends the value once when the PLC restarts.
bAuto	BOOL	Automatic sending is selected when a value changes or the time tMaxSendTime has elapsed (polling).
rValueLimit	REAL	Parameter for automatic sending. The value is only sent if the change since the last transfer is greater than this parameter. If this value is 0, sending takes place after each change in value. This value is not available for enums and structures. It is sent there after every value change.
tMinSendTime	TIME	Parameter for automatic sending. A new value will be sent at the earliest after this time has elapsed. This prevents continuous sending.
tMaxSendTime	TIME	Parameter for automatic sending. The value is sent at the latest when this time has elapsed, even if the minimum value change (rValueLimit) has not been reached (polling). The value 0 disables this function.
bDisabled	BOOL	TRUE = deselection of the function block.

Inputs/outputs

VAR_IN_OUT
  stLON_Com : ST_LON_Communication;
END_VAR

Name	Type	Description
stLON_Com	ST_LON_Communication	This structure is used to link FB_LON_KL6401() with the transmit/receive blocks.

Outputs

VAR_OUTPUT
  bBusy         : BOOL;
  bError        : BOOL;
  eError        : E_LON_ERROR;
  dwErrorKL     : DWORD;
END_VAR

Name	Type	Description
bBusy	BOOL	The bBusy output is TRUE as long as values are sent.
bError	BOOL	This output goes TRUE as soon as an error occurs. This error is described via the eError variable.
eError	E_LON_ERROR	This output outputs an error code in the event of an error. bError goes TRUE at the same time.
dwErrorKL	DWORD	Error ID of the function block FB_LON_KL6401() (see dwErrorKL). In this case the variable eError has the value eKL6401_Error. bError goes TRUE at the same time.

Requirements

Development Environment	TwinCAT 3 PLC library to be integrated
TwinCAT from v3.1.4020.14	Tc2_LON from 3.3.4.0