[W_TI] Write time

Function block W_TI converts a value with unit Time to a Double Integer and updates properties 'Present value' and 'Reliability' for a calculated value object with the present value of type Double Integer.

W_TI converts a value with unit Time to a Double Integer and updates properties 'Present value' and 'Reliability' for a calculated value object with the present value of type Double Integer.

W_TI converts the value for time to a unit that is sent in property 'Units'.

W_TI can process the following units:

Milliseconds
Hundredths of a second
seconds
Minutes
Hours
Days
Weekly
No units

If the property 'Units' is set to a value that is different from the listed units, the present value is ignored and the output disturbance is set to 1. The present value is assumed to be milliseconds if the property 'Unit' is set no unit.

The units month and years are not supported since the present value 1 already exceeds the maximum value of the S7 data type Time.

Functioning

Compatible data points:

Integer calculated value [ICalcVal]

Required properties:

Present value
Tracking value
Status flag
Reliability
Unit

Pins

Input	Description	Data type	Default value Value range
EnWrit	Enable write If [EnWrit] = 1, writing values from inputs [Val] and [SetValid] to the BACnet object is enabled. If [EnWrit] changes from 0 to 1, writing occurs.	Boolean	1
Val	Value Virtual value, calculated and assigned by the control program to update the present value. [Val] is used to update the property 'Tracking value'; followed by the BACnet object internally updating the present value with the written tracking value. [Val] is written if [EnWrit] = 1 and one of the items applies: [Val] changes. [SetValid] changes. [RptWrit] is 1.	Time	0 ms
SetValid	Set valid value indication A value calculated and assigned by the control program that indicates whether [Val] is reliable. [SetValid] is mapped to an error code that updates reliability if [EnWrit] = 1 and one of the following items applies: [SetValid] changes. [Val] changes. [RptWrit] is 1.	Boolean	1
SetValid	0 - Reliability error code 7 (unreliable - other). 1 - Reliability error code 0 (no fault).
RptWrit	Repeat write Forces writing of [Val], and [SetValid] to the data point. Write is repeated with each program cycle until [RptWrit] = 1. The control program typically calculates and sets [RptWrit]. Note: [RptWrit] cannot be permanently forced to 1. This may influence performance and communications traffic.	Boolean	0
RptWrit	0 - No action. 1 - [Val] and [Sta] are written to the data point with each programming cycle.
BaObjRef	BA-Object reference Link between function block and BACnet object.	Structure	---
BaObjRef > DeviceID	Device identifier [DeviceID] includes object type and object instance in one ID. Identifies the device object: local or remote. A local device object can also be identified by value 16#3FFFFF.	Double Word	16#3FFFFF
BaObjRef > ObjectID	Object identifier [ObjectID] includes object type and object instance in one ID. Identifies the object on a device.	Double Word	16#3FFFFF
BaObjRef > ItemID	Item identifier [ItemID] represents an index in a view node object that references the BACnet object. [ObjectID] and [ItemID] together define an indirect reference to the BACnet object. Value -1 indicates a direct interface.	Integer	-1

Output	Description	Data type	Default value Value range
PrVal	Present value Value of property 'Present value' for the referenced BACnet object. [PrVal] supplies the last valid value in the event of a fault.	Time	0 ms
Dstb	Disturbed [Dstb] indicates whether the referenced BACnet object is in fault. [Dstb] = 1 if: BACnet object = Error during access OR 'Status flag' = Fault Otherwise [Dstb] = 0	Boolean	0
Rlb	Reliability Indicates the value of property 'Reliability', if the property is available.	Integer	0: No fault detected
ErrCode	Error code indication	Integer	0: No error
ErrCode	= 0 - No error > 0 - XFB error codes

Troubleshooting

The write function is not available if the BACnet object is on another device.