Omron SYSMAC C20P Operation Manual page 27

IR Area
I/O Bits Available in
Expansion I/O Units
Model Input bits
IR (n+1)
00 08
01 09
02 10
C20P
03 11
04
05
Cannot
be used
06
07
IR (n+1)
00 08
01 09
02 10
C28P
03 11
04 12
05 13
06 14
07 15
IR (n+1)
08
00
01 09
02 10
C40P
11
03
04 12
05 13
14
06
07 15
IR (n+1)
00 08
01 09
02 10
03 11
C60P
04 12
05 13
06 14
07 15
18
The following table shows which bits can be used as I/O bits in each of the
Expansion I/O Units. Bits in the shaded areas can be used as work bits but
not as output bits. The word addresses depend on the Unit(s) that the Expan-
sion I/O Unit is coupled to. In all cases the first Expansion I/O Unit address
for input and output words is one more than the last address for input and
output words used by the Unit to which the Expansion I/O Unit is attached.
For example, if the last word address was IR 03, the first input or output word
address for the Expansion I/O Units will be IR 04. In the tables below "n" is
the word allocated prior to the Expansion I/O Unit.
Output bits
IR (n + 6)
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
IR (n + 6)
00 08
01 09
02 10
03 11
04 12
05 13
06 14
07 15
IR (n + 2) IR (n + 6)
00 00 08
01 01 09
02 02 10
Cannot
03 03
11
be used
04 04 12
05 05 13
06 06 14
07 07 15
IR (n + 6)
IR (n + 2)
00 08 00 08
01 09 01 09
02 10 02 10
03 11 03 11
04 12 04 12
05 13 05 13
06 14 06 14
07 15 07 15
IR (n + 4)
08
00
01 09
02 10
11
03
04 12
05 13
14
06
07 15
IR (n + 4)
00 08
01 09
02 10
03 11
C4K
04 12
Output
05 13
06 14
07 15
Section 3–3
Model Input bits Output bits
IR (n + 1)
00 08 00
01 09 01
02 10 02
03 11 03
C16P
04 12 04
Input
05 13 05
06 14 06
07 15 07
IR (n + 1)
00
01
02
C16P
03
Cannot
Output
be used
04
05
06
07
IR (n + 1)
00
00
01 01
02 02
03
03
C4K
04
Input
05
Cannot
be used
06
07
IR (n + 1)
00
01
02
03
Cannot
04
be used
05
06
07
IR (n + 6)
08
09
10
11
12
13
14
15
IR (n + 6)
08
09
10
11
12
13
14
15
IR (n + 6)
08
09
10
11
12
13
14
15
IR (n + 6)
08
09
10
11
12
13
14
15