
5. OPERATION
[Input item]
COUNTER DATA TYPE
This parameter specifies whether the format of a counter value used with the CTR
function instruction is to be binary or BCD.
initial value 0 : BINARY Setting 0 : BINARY / 1 : BCD
LADDER EXEC (ladder execution time)
This parameter specifies an incremental processing time for the first and second ladder
levels.
This setting reduces ladder scan time,
thus achieving high-speed ladder
execution.
Initial value 100 Setting range 100 to 150
The table below indicates ladder execution time status during an execution period of 8
ms.
I
Setting
1
First and second level processing time
100%
1 ~~~~
5ms
150% 7.5ms
Note, however, that increased ladder execution time on the first and second levels
reduces the following processing times:
l PMC screen display time
l CPASCAL processing time
l Ladder processing time on the third level
PASCAL EXEC (PASCAL execution time)
This parameter specifies the ratio of C/PASCAL execution time to ladder program
execution time.
In contrast to LADDER EXEC, this parameter reduces ladder processing time on the
first and second levels, and increases processing time for PASCAL and similar
processing.
r
Initial value 0
I
Setting range 0 to 100
I
PASCAL EXEC RATIO (ratio of PASCAL processino time to PMC screen processin@
The initial setting gives the same priority to C/PASCAL processing and PMC screen
display. This parameter allocates processing time to the following:
l PMC screen display time
l C/PASCAL processing time
l Ladder processing time on the third level
Under this setting, PASCAL can run periodically even during PMC screen display.
l-79