Omron SYSMAC C2000H Operation Manual page 28

IR Area
20
signed the next word(s) following the word(s) assigned to the previous Unit. If
there are any empty slots, no words will be assigned. Words are only as-
signed when a Unit is mounted; all empty slots are skipped. The number of
I/O words allocated to each type of Unit is shown below.
Unit
16-pt I/O Units
24- or 32-pt I/O Units
64-pt I/O Units
Interrupt Input Unit
Dummy I/O Unit
Analog I/O Units
High-speed Counter Units
MCR Units
PID Unit
I/O Interface Unit
Cam Positioner
ASCII Unit
Host Link Unit
PC Link Unit
SYSMAC LINK Unit
SYSMAC NET Link Unit
Remote I/O Master Unit
Remote I/O Slave Unit
I/O Link Unit
File Memory Unit
Position Control Units
I/O Control Unit
ID Sensor Unit
*Remote I/O Systems are described briefly below.
Once the word(s) assigned to a Unit has been determined, the use of individ-
ual bits in the word(s) is determined by the type of Unit. If the Unit is a Spe-
cial I/O Unit, I/O Link Unit, or Intelligent I/O Unit, each bit will have a dedi-
cated function. Refer to Operation Manuals for the relevant Units for details.
With I/O Units, bits within a word are assigned to terminals starting at the top
of the I/O Unit with bit 00 and going sequentially to the bottom. If the first Unit
on the left of the first Rack (CPU Rack for all but C2000H Duplex Systems;
CPU I/O Rack for C2000H Duplex Systems) is an Input Unit, the top termi-
nals (i.e., the top input point) will be assigned IR 00000, the next terminals,
IR 00001, and so forth for all of the terminals on the Unit. The allocation or-
Words required
1 word
2 words
4 words
1 word
Set to 1, 2, or 4 words
2 or 4 words
CT012 and CT041: 2 words; CT001: 4 words
4 words
4 words
None
2 or 4 words
2 or 4 words
None
None (assigned LR words)
None (assigned LR and/or DM words)
None (assigned LR and/or DM words)
None*
None*
1 or 2 words
None
2 or 4 words
None
5 words
Section 3-3