Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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CompoBus/S I/O Link Units
Section 7-6
Description of Operation
7-6 CompoBus/S I/O Link Units
The CP1H can function as a slave to a CompoBus/S Master Unit (or SRM1
CompoBus/S Master Control Unit) when a CP1W-SRT21/CPM1A-SRT21
CompoBus/S I/O Link Unit is connected. The CompoBus/S I/O Link Unit
establishes an I/O link of 8 inputs and 8 outputs between the Master Unit and
the PLC. Up to three CompoBus/S I/O Link Units, including other Expansion I/
O Units, can be connected to a CP1H CPU Unit.
From the standpoint of the CP1H CPU Unit, the 8 input bits and 8 output bits
allocated to the CompoBus/S I/O Link Unit are identical to input and output
bits allocated to Expansion I/O Units even though the CompoBus/S I/O Link
Unit does not control actual inputs and outputs. The input and output bits allo-
cated to the CompoBus/S I/O Link Unit are one side of an I/O link between the
slave CPU Unit and the CPU Unit to which the Master Unit is connected.
CIO 2000
CIO 2002
CIO 2: Leftmost 3 digits of temperature data
0 16 5 16 4 16 3
0 0 16 5 16 4 CIO 2001 16 4 16 3 16 1 16 0
0 16 5 16 4 16 3
CIO 2: Rightmost 3 digits of temperature data
1 16 2 16 1 16 1
(2)
(1)
(9) If temperature data is negative, "8" is written here.
(3)
D101 0/8 10 6 10 5 10 4
D103 0 1 0 0
#0100
CIO 2002
−
2's complement data
D100 10 3 10 2 10 1 10 0
H1 0 0 16 5 16 4 H0 16 3 16 2 16 1 16 0
(5)
(4)
(1)
D102 0 0 0 0
#0000
CIO 2001
2's complement data
(6)
If the temperature data is
non-negative, binary data is
converted to BCD data.
(8)
If the temperature data is negative,
binary data is converted to BCD data.
(7)
Binary
subtraction
CP1H CPU Unit
Special flat cable or VCTF cable
BD L NC( BS-) N C
BD H NC( BS+)
S
COMM
ERR
ON
1 2 3 4 5 6
No.
SRT21
EXP
CompoBus/S Master Unit
(or SRM1 CompoBus/S
Master Control Unit)
CP1W-SRT21
CPM1A-SRT21
CompoBus/S
I/O Link Unit