Panasonic FP E Series User Manual page 230

Reducing the transmission cycle time when there are stations that have not been added
If there are stations that have not been added to the link, the Tlk time (link addition processing time) and
with this the transmission cycle time will be longer.
With the SYS1 instruction, the link addition waiting time Twt in the above formula can be reduced. Thus,
SYS1 can be used to minimize the increase in the transmission cycle time.
<Programming example of SYS1 instruction>
(SYS1, M PCLK1T0, 100)
Function:
Setting SYS1 to change the waiting time for a link to be added to the PC(PLC) link from the default value
of 400 ms to 100 ms.
Keywords:
Setting for key word no. 1: PCLK1T0
Permissible range for key word no. 2: 10 to 400 (10 ms to 400 ms)
Note) Enter one space after M and then enter 12 characters to be aligned to the right.
If the second keyword is 2 digits, put 2 spaces, and if it is 3 digits, put one space.
Note:
If there are any stations that have not been added to the link, the setting should not be changed
as long as a longer link transmission cycle time does not cause any problem.
• The SYS1 instruction should be executed at the beginning of the program, at the rise of R9014. The
same waiting time should be set for all linked PLCs.
• The waiting time should be set to a value of at least twice the maximum scan time for any of the PLCs
connected to the link.
• If a short waiting time has been set, there may be PLCs that cannot be added to the link even if their
power supply is on. (The shortest time that can be set is 10 ms.)
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Noe)