Micromod MOD: 1750N Output holder for MOD 30ML - Manual (Page 20)

Output Holder Instructions
CONFIGURATION
with the RUNINIT signal from the Interface (IF) block is used in the EX block to enable
output tracking in the PID block. The logic configured in the EX block OP_T_LGC is as
shown below:
SENSE && RUNINIT
In the above expression && is the logical AND function. The RUNINIT signal from the IF
block goes high momentarily upon controller startup. If the output holder is not present,
the PID block does not have to switch its output to track mode upon start up.
If bumpless transfer of output is not an issue (refer to step 3 above) in your application,
then you can remove these blocks also.
6. Connect the RUNINIT attribute from the IF block to the RUNINIT User Input of the EX
(OP_T_LGC ) block. Refer to the section 2-3-1 for the procedure.
7. The following relative EXECUTION ORDER MUST BE MAINTAINED!
PV
pv_I
RETURN
RETURNF1
SENSE
SENSF
OP_T_LGC
Pid
op_ao
Disp
TuneList
If using other I/O for Sense and Return be sure to maintain same relative execution
order. To set the execution order, select Objects – Set Execution Order – List Mode from
the ViZapp menu bar to display the Execution order table as shown in the next figure:
4 -6