Allocating First Words To Slots - Omron SYSMAC CS Series Operation Manual

Allocating First Words to Slots

Confirming First Rack Word Settings on a Programming Console
1,2,3...
Precautions in Setting Rack First Words
8-4

Allocating First Words to Slots

Word Allocations
With a CS1-H CPU Unit, the Programming Console can be used to check
whether or not the first word has been set on a Rack. Use the following proce-
dure.
1. Press the FUN, SHIFT, and CH Keys to start the I/O table creation opera-
tion. If the first work for a Rack has been set, a message saying so will ap-
pear on the second line of the display.
FUN
If nothing is displayed, then a first word has not been set.
2. Press the CHG Key, enter the password (9713), and then press the
WRITE Key to continue creating the I/O tables, or press the CLR Key to
cancel the operation and return to the initial display.
• Be sure to make first word settings so that allocated words do not overlap.
The first word setting for a rack can be any address from CIO 0000 to
CIO 0900. If the same word is allocated to two Racks, the I/O tables can-
not be created and the Duplication Error Flag (A26103) in the I/O Table
Error Information will turn ON.
• Always register the I/O table after installing an I/O Unit, after setting a rack
number, or after setting the first word allocation for a Rack. The I/O Table
Registration operation registers the I/O words allocated to the Racks.
• I/O words will not be allocated to empty slots. If an I/O Unit will be
installed later, reserve words for the empty slot by changing the I/O table
with a Programming Device's I/O Table Change Operation.
• If the actual system configuration is changed after registering the I/O table
so that the number of words or I/O type does not match the I/O table, an
I/O verification error (A40209) or I/O setting error (A40110) will occur. A
CS-series CPU Bus Unit Setting Error (A40203) or Special I/O Unit Set-
ting Error (A40202) may occur as well.
• When a Unit is removed, words can be reserved for the missing Unit using
the I/O Table Change Operation. If a Unit is changed or added, all of the
words in the program following that Unit's allocated words will be changed
and the I/O Table Registration Operation will have to be performed again.
In the CS-series PLCs, the first word allocated to a slot on any Rack can be
set with the CX-Programmer's I/O table edit operation regardless of the posi-
tion of the slot. This feature can be used whenever it's necessary to control
allocations to specific Units, e.g., to group allocated I/O words by device or cir-
cuit.
The first word can be set for up to 64 slots.
Note The first words for slots cannot be set at the same time as the first words for
Racks.
When setting first words for slots, the first word must be set for slot 00 on the
CPU Rack. The first word can then be set for any slot on any Rack for up to 63
other slots.
000000I/O TBL ?
CH
SHIFT
Rack 1st Word En
DM
Section 8-4
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