497
Parameter Normal application(s)Function
J:Scheduled interrupt Sets the unit for setting the scheduled interrupt to 10.0, 1.0, or 0.5 ms.
K:1st Rack addr Sets the first word for each of the CPU,
Expansion CPU, and Expansion I/O
Racks.
To simplify word allocations, to prevent
changes in allocations, or to allow for
expansion without changes in
allocations.
L:Group 1,2 1st addr Sets the first word for group-1 and
group-2 Slaves for each Master.
To prevent overlapping of word
allocations when group-1 and group-2
Slaves require more then 50 words per
Master.
M:Trans I/O addr Sets the first word for I/O Terminals for
each Master.
To separate I/O Terminal allocations
from those for other Slaves.
N:Group 3, RT 1st addr Sets the first word for each Slave Rack. To simplify word allocations, to prevent
changes in allocations, or to allow for
expansion without changes in
allocations.
O:CV–SIOU 1st addr Not used at present. ---
P:Power break Sets the length of time to be treated as
a momentary power interruption.
To enable ignoring short primary voltage
drops for poor power supplies.
Q:Cycle time Sets a minimum cycle time. To eliminate irregular I/O delays.
R:Watch cycle time Sets a maximum cycle time. To stop operation when a specified
cycle time is exceeded or to enable
longer cycle times by setting a high
maximum.
S:Error log Sets the number of records recorded
and the words in which they are
recorded.
To increase the number or error records
that are maintained.
T:IOIF, RT display Sets the startup display mode for the 7-segment displays on I/O Control Units, I/O
Interface Units, and SYSMAC BUS/2 Slave Racks.
7-2 PC Setup Details
Name Operation
A:Hold
areas
Hold area The status of bits specified here will be maintained when power is turned off and
on. The holding bits can be set in any continuous range between CIO 1000 to
CIO 2399. Be sure to perform the Create I/O Table operation or turn the power off
and on after changing this parameter.
Do not specify any bits allocated to I/O points on Remote I/O Units. Outputs on
Remote I/O Units will remain on after program execution stops if they are in the
hold area.
(Default: CIO 1200 to CIO 1499)
Hold bits The I/O status on Racks specified here or in all Slaves connected to Masters
specified here will be maintained when operation is stopped or when PC
operating modes are changed. Status will not be maintained for these outputs
when power is turned off. Be sure to perform the Create I/O Table operation or
turn the power off and on after changing this parameter.
(Default: nothing held)
PC Setup Details Section 7-2
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