89
I/O
word number
I/O type:
I, O
i, o (see tables on previous page)
Unit number (0 to 9)
Remote I/O Slave Unit number (0 to 4)
Remote I/O Master Unit number (0 or 1)
Indicates a Remote I/O Rack
00000IOTBL READ
R**-*U=**** ***
Unit
number (0 to 9)
Indicates Group-2 HIgh-density I/O Unit
00000IOTBL READ
*-*U=#***
2:
2 words (32 pts)
4:
4 words (64 pts)
I:
Input Unit
O:
Output Unit
Note Group-2 HIgh-density I/O Units will not be displayed in the I/O table when it is
displayed
using
LSS (host computer). Four asterisks (
∗∗∗∗
), indicating no Unit,
will be displayed instead.
I/O
word number (200 to 231)
I/O type:
I (input), O (output), or
W (input/output)
Remote I/O Master Unit number (0 to 1)
W
ord (H: leftmost 8 bits; L: rightmost 8 bits)
00000IOTBL READ
2**HU=R*-*
4-6-8 Clearing the I/O Table
The
I/O T
able Clear operation is used to delete the contents of the I/O table that
is currently registered in the CPU memory. The PC will be set for operation
based on the I/O Units mounted when the I/O Table Clear operation is per-
formed.
The I/O Table Clear operation will reset all Special I/O Units and Link Units
mounted
at the time. Do not perform the I/O T
able Clear operation when a Host
or PC Link Unit, Remote I/O Master Unit, High-speed Counter Unit, Position
Control Unit, or other Special I/O Unit is in operation.
Note This
operation can
be performed only in PROGRAM mode with the write-protec
-
tion switch (pin 1 of the CPU’s DIP switch) set to OFF (OFF=“WRITE”).
Remote I/O Slave Racks
Group-2 HIgh-density I/O
Units
Optical I/O Units and
Remote Terminals
Preparation for Operation Section 4-6
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