CS1D-BC042D Omron, CS1D-BC042D Datasheet - Page 272

• Manufacturer Part Number: CS1D-BC042D
• Description: CS1D Dual CPU Exp
• Manufacturer: Omron

Specifications of CS1D-BC042D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Allocating First Words to Slots (Single CPU Systems Only)
Precautions in Setting Rack First Words
7-4
Word Allocations
Allocating First Words to Slots (Single CPU Systems Only)
Note The first words for slots cannot be set at the same time as the first words for
2. Press the CHG Key, enter the password (9713), and then press the
With a Single CPU System, 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
position of the slot. This feature can be used whenever it’s necessary to con-
trol allocations to specific Units, e.g., to group allocated I/O words by device or
circuit.
The first word can be set for up to 64 slots.
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.
Each first word set for a slot creates a group starting with that slot. Words are
allocated starting from the specified word to the first slot in the group and con-
tinuing left to right allocating consecutive words to each Unit until the next
group (i.e., until the next Unit for which a first slot word is set). The next group
can start on the same Rack or on a following Rack.
• Be sure to make first word settings so that allocated words do not overlap.
• Always register the I/O table after installing an I/O Unit, after setting a rack
• I/O words will not be allocated to empty slots. If an I/O Unit will be
• If the actual system configuration is changed after registering the I/O table
• When a Unit is removed, words can be reserved for the missing Unit using
If nothing is displayed, then a first word has not been set.
WRITE Key to continue creating the I/O tables, or press the CLR Key to
cancel the operation and return to the initial display.
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.
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.
installed later, reserve words for the empty slot by changing the I/O table
with a Programming Device’s I/O Table Change Operation.
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.
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.
FUN
SHIFT
*DM
CH
Rack 1st Word En
000000I/O TBL ?
Section 7-4
237