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6-7 Digital input (DI function) [option]
1) Function
·With Digital input, the follwing functions are available.
q SV switching
w Control mode; RUN/STANDBY selection
e Ramp/soak RUN/RESET selection
r Auto-tuning start/stop
t Alarm latch cancel
y Timer start/reset
2) To use DI function;
· Select the function with the parameter “di-1” or “di-2” refering to the Table shown below.
3) Table of DI function
3rd block parameter
PV or
SV
DI function code
(0 to 12)
DI
function
code
Function Description
1 Set value (SV) switcing
5 All alarm latch cancel
When this function is not used, DI is not effective.
6 Alarm 1 latch cancel
2
Control mode, RUN/STANDBY
At standby mode, control is not provided and SV flickers.
3Auto-tuning (standard)
start
Start/Stop can be switched at the time of DI raising up or
dropping down.
7 Alarm 2 latch cancel
9 ALM1 timer ON/OFF delay timer operation is available. The remaining
time of the timer can be checked with timer-1 and -2
display parameters (first block).
10 ALM2 timer
11 ALM3 timer
12 Ramp/soak RUN/RESET RUN/RESET of ramp/soak can be performed at the time
of DI raising up or dropping down.
4Auto-tuning (low PV)
start
Switching between local SV and “ ” “ ” “ ”
8 Alarm 3 latch cancel
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