User manual - ATR142- 27
t.2.e.a.
Timer 2 End Alarm
Alarm active at elapsing of Timer2
until any key is pressed. Option not
available for Dual sequential Timer and
Dual Timer Loop.
t.2.w.e.
Timer 2 Warning
Expiring
Alarm active for the last 5” of Timer2
t .1 . 2 . s .
Timer 1-2 Start
Alarm
Alarm active as long as Timers 1 and 2
are in Start mode (Timers active)
t .1 . 2 . e .
Timer 1-2 End Alarm
Alarm active at elapsing of Timers 1
and 2 until any key is pressed. Option
not available for Dual sequential Timer
and Dual Timer Loop.
t .1 . 2 . w .
Timer 1-2 Warning
expiring
Alarm active for the last 5” of Timers
1 and 2.
10 Serial Communication
10.1 Slave
ATR142-ABC-T is equipped with RS485, it can receive and
broadcast data via serial communication using MODBUS RTU
protocol. The device operates as slave if parameter 59
mast.
is
set as
di s
. This function enables the control of multiple devices
connected to a supervisory system (SCADA).
Each controller will answer to a master query only if the query
contains same address as on parameter
sL. a d .
The permitted
addresses range from 1 to 254 and there should not be
controllers with the same address on the same line.
Address 255 can be used by the master to communicate with all
the connected equipment (broadcast mode), while with 0 all
the devices receive the command, but no answer is expected.
ATR142 can introduce an answer delay (in milliseconds) to
master request. This delay has to be set on parameter 58
se. d e.
.
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