Omron E5CN-HT User Manual page 128

Using Event Inputs
Note
Controller Run/Reset
Status
Switching between
Auto and Manual
Control
106
Setting
at-2
100% AT Execute/Cancel
at-1
40% AT Execute/Cancel (See note 4.)
wtpt
Setting Change Enable/Disable
cmwt
Communications Write Enable/Disable (See note 5.)
lat
Alarm Latch Cancel
wait
Wait Enable/Disable
(1) The event input must be turned OFF first before this function can be ac-
tivated again. This function is enabled only during program operation.
(2) These functions are enabled only in reset status.
(3) These functions can be set for the E5AN-HT/E5EN-HT only.
(4) This function can be set for heating/cooling control, or for floating control
for a Position-proportional Model, but the function will be disabled.
(5) This function can be selected only with models that support communica-
tions. Also, when a work bit is selected as event input data, Communica-
tions Write Enable/Disable parameter cannot be selected.
The same function cannot be assigned to more than one event input.
For example, if Run/Reset is assigned to event input 1, it cannot be assigned
to any other event input from event input 2 to 4. To assign it to another event
input, you must first assign event input 1 to a function other than Run/Reset.
Turn event inputs ON and OFF while the power is being supplied. Event input
ON/OFF changes are detected for inputs of 50 ms or longer. (However, inputs
of 250 ms or longer is determined using logic operation.)
The functions are described in detail below. Event inputs 1 and 2 are taken as
examples. When using event inputs 3 and 4, substitute event input 3 for event
input 1 and event input 4 for event input 2.
When the Event Input Assignment 1 or Event Input Assignment 2 parameter
is set to RR-1 (Run (OFF)/Reset (ON)), control will start when event input 1 or
2 turns OFF. Control is stopped when the input turns ON. Alarm outputs, how-
ever, will be according to the PV. The RST (reset) indicator will light while con-
trol is stopped.
Setting Input contact
Event input 1 or 2 ON
Event input 1 or 2 OFF
The operation will be as shown below if the parameter is set to RR-2 (Run
(ON)/Reset (OFF)).
Setting Input contact
Event input 1 or 2 ON
Event input 1 or 2 OFF
When the Event Input Assignment 1 or Event Input Assignment 2 parameter
is set to MANU (auto/manual), manual control will start when event input 1 or
2 turns ON. Auto control will start when the input turns OFF.
The MANU indicator will light during manual control.
Setting Input contact
Event input 1 or 2 OFF
Event input 1 or 2 ON
Function
Status
RST
RUN
RST
Status
RUN
RST
RUN
Status
Automatic
Manual
Section 4-5
RUN
RST