Multi Loop Controller
44
● Run, stop/monitor (Ready), FAIL event
For run state event, event (EV) LED is not turned on even when corresponding event occurs, and with
no impact at parameters of event state (EV_STS), event channel state (EVSTS.[1~4]) by input channel,
and event channel state (EVSTS.[1~8]STS) by input channel, and has effect only when used by
connecting with event unit (ML-E8). It can be used by setting run state event, and with corresponding
event bus output parameter set to “1”.
Among run state indication events, FAIL event operates regardless of channel modes.
● Control stop (EVSTOP) at event occurrence
If event specified in each input channel occurs, control run can be set to sustain or stop. When setting
EVSTOP parameter to “1”, if event occurs, control run stops and if event is released, control run restarts.
● Control stop setting(COMCHK) at RS485 communication disconnection
In case of no response for transmission for pre-set time by setting communication connection
sustaining time with RS485 Master, control can be stopped, and it can be set at COMCHK
parameter.
Run state event
Occurrence condition
Run state event
If channel mode (CHMD) is “run mode” and run setting (R/S) is “run
start”, event occurs.
Stop/monitor (READY) state event
If channel mode (CHMD) is “monitor mode” or “run mode”, and run
setting (R/S) is “run stop”, event occurs.
FAIL state indication event
Event occurs at normal state. If abnormality occurs to power source,
ROM, and RAM state, event occurrence stops.
Power (PWR) LED
Upon completion of initialization for run after power is supplied, LED light is turned on.
Initialization time is about 3 seconds.
C o m m u n i c a t i o n
(COM) LED
During RS485 communication, if data of address set with front section setting switch is
received, LED blinks. If data other than pre-set address is received, COM LED remains
turned off.
Event (EV) LED
If at least one of pre-set event occurs, EV indication LED is turned on.
As event no. 17~19 of run, stop/monitor (READY), FAIL event are for informing run state,
LED will not turn on at event occurrence.
control output
(CH1~2) LED
Manipulated value controlled based on channel is indicated in 4 seconds cycle and 8
steps by blinking LED light.
If manipulated value is 50%, it turns on for 2 seconds, and turns off for 2 seconds, and for
25%, it turns on for 1 second, and turns off for 3 seconds
When Auto tuning (AT) is in progress: Repeatedly blinking every 0.2 seconds
control output
(CH1~4) LED
3.3.4 State indication and setting
● Front side LED indication
ML-D2H
ML-D4
Summary of Contents for ML-D2H
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