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System register instructions
PLC Link
Time Setting
This sets the system setting time when a PLC link is used, based on the contents specified by the
character constant.
The conditions specified by the first keyword are set as the time specified by the second keyword.
The first and second keywords are separated by a comma.
The setting for the link entry waiting time is set if the transmission cycle time is shortened when
there are stations that have not joined the link. (Stations that have not joined the link: Stations that
have not been connected between the first station and the station with the largest number, or
stations for which the power supply has not been turned on.)
The error detection time setting for the transmission assurance relay is set if the time between the
power supply being turned off at one station and the transmission assurance relay being turned off
at a different station is to be shortened.
Keyword setting
1. Link entry wait time
PCLK1T0:
Specified range:
2. Error detection time for transmission assurance relay
PCLK1T1:
Specified range:
Precautions during programming
The program should be placed at the beginning of all PLCs being linked, and the
same values specified.
This instruction should be specified in order to set special internal relay R9014 as
the differential execution condition.
The setting contents of the system registers are not affected by this instruction
being executed.
Separate first and second keywords with a comma "," and do not use spaces.
Precautions when setting the link entry wait time
This should be specified such that the value is at least twice that of the largest
scan time of all the PLCs that are linked.
If a short value has been specified, there may be some PLCs that are not able to
join the link even though the power supply for that PLC has been turned on.
If there are any stations that have not joined the link, the setting should not be
changed, even if the link transmission cycle time is longer as a result. (The
988
Fixed
10 to 400 (10 ms to 400 ms)
Fixed
100 to 6400 (100 ms to 6400 ms)
PCLK1T0,
100
100
PCLK1T1,
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