Equipments (Devices) > CFW501 > Ladder > Timer

Timer block that, when identifies it is energized, enables the output after a delay set by PT.

Ladder Representation

TP_block

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	IN	BOOL	Block enabling
	PT	WORD UINT DWORD1 UDINT1	Time while the output is enabled
	TIMEBASE	WORD	Time base for PT and ET
VAR_OUTPUT	Q	BOOL	Block output
VAR_OUTPUT	ET	WORD UINT DWORD1 UDINT1	Counter elapsed time
VAR	TP_INST_0	TP	Instance of access to block structure

NOTE!

1. In CFW300 and CFW100, the PT and ET field types can only be WORD or UINT.

2. Some devices allow you to configure user parameters, but these need to be configured for use in the fields PT and ET, where it is necessary to select a compatible data type as shown in table above. For more information refer to the corresponding topic;

3) The TIMEBASE field may vary depending on the device used.

Operation

On the edge positive transition in IN, Q receives TRUE value, counting is triggered and ET is incremented according to TIMEBASE. When ET equals PT, the Q output goes to state FALSE until IN revolutions to FALSE. At that moment, if IN is at TRUE level, nothing happens. On the edge positive transition in IN, ET is automatically reset.

Compatibility

Device	Version
PLC300	1.50 or higher
SCA06	2.00 or higher

Block Flowchart

TP_flowchart

Operation Diagram

hardwaretimertp_fig2

Example in Ladder

TP_example01

The above example enables the DO1 output for six seconds at each DI1 positive transition.

Example in ST

The example below displays the instructions for applying the example above in the ST language.

VAR

PRESET : UINT := 6;

ELAPSED : UDINT;

TP_INST_0 : FB_TP;

END_VAR

TP_INST_0.IN := DI1;

TP_INST_0(PT:=PRESET, TIMEBASE:=2); // TIMEBASE according to

ELAPSED := TP_INST_0.ET; // the device used

DO1 := TP_INST_0.Q;