Pixsys ATR 401, User Manual, Page: 19 / 124

ATR401 - User manual 19
In this example the command setpoint is the value read on second analogue
input AI2: if par. 19

is selected as

(AI1) this becomes main process
(sensor input) and AI2 becomes the setpoint.
If par. 19

is selected as

(AI2) this becomes the main process
(sensor input) and AI1 becomes the setpoint.
NB : Remote setpoint function works only with one of these two settings on
par. 19

It is possible to switch from remote to local setpoin pressing for a second.
This selection is stored even after subsequent instrument restart.
When remote setpoint is active
REM is on, it fl ashes if local setpoin has been
selected.
7.3
Remote setpoint by serial input
It is possible to enable remote setpoint function selecting

on par. 20

Remote setpoint has to be wrote on word modbus 5001 (tenth of
degree if the command process is a temperature sensor).
It is possible to switch from remote to local setpoint pressing
PRGM
.
When remote setpoint is active, REM is on (if there is serial communication), it
fl ashes if local setpoin has been selected.
At restarting the controller backs to remote setpoint mode (setpoint value is
initialized to 0).
Decimal point setting parameter for remote setpoint input is
locked and it is automatically changed when command input
decimal point variates.
8
Controller Functions
8.1
Modifi cation of main and alarm setpoint value
Setpoint value can be modifi ed from keyboard as follows:
Press Display Do
1 Value on display 2 changes.
Increases or decreases the
main setpoint.
2
SET
Visualize alarm setpoint on
display 1.
3 Value on display 2 changes.
Increases or decreases the
alarm setpoint value.