Watlow F4T User Manual

Watlow F4T • 126 • Chapter 5 Function Reference
Target Value
Set the count value at which OUT turns on.
Range: 0 to 9,999
Load Value
Set the value to which the Count parameter is set each time the controller is powered up and
whenever the counter is reset by RST.
Range: 0 to 9,999
Latching
Select the behavior for the output when Count exceeds the Target Value.
Options:
• Yes: output is latched on once the count reaches the target value and turns off only
when the counter is reset
• No: the output is on only when the count equals the target value. Additional counts
cause the output to turn off
Count Active Level
Set which state changes at CNT are counted.
Options:
• Both: the count increments when CNT changes from on to off and when it changes from
off to on
• High: the count increments only when CNT changes from off to on
• Low: the count increments only when CNT changes from on to off
Reset Active Level
Set which state change at RST sets Count equal to Load Value.
Options:
• High: off to on
• Low: on to off
Count
Indicates the current count.
Range: 0 to 9,999
Note:
The count is not retained through a power loss; it is set equal to the Load Value upon
power up.
Note:
The count value rolls over at the ends of its range. If the count is incremented at 9,999 it
indicates 0 and additional increments count up from there
Down
This function counts down from the load value. The count is decremented by applying a signal
to CNT. OUT turns on when the count equals the target value. OUT turns off and the count is
set equal to the load value by RST (reset).

Watlow F4T Specifications

General

Inputs	Thermocouple, RTD, mA, V
Outputs	Relay, SSR, mA, V
Communication	Ethernet, Modbus RTU
Data Logging	Yes
Certifications	CE, UL, cUL, RoHS
Control Modes	PID, On/Off
Power Supply	100 to 240 VAC
Operating Temperature	0 to 50°C
Enclosure Rating	IP65
Display	4.3 in. (109 mm) color touch panel LCD
Control Loops	Up to 4