Operation Data - Omron CJ Series Operation Manual

Data Exchange with the CPU Unit
CPU Unit
Operation
Data
Initialization
Data
Operating
Parameters
2-5-4

Operation Data

CJ-series CPU Unit
Special I/O Unit Area in CIO Area
Allocated words
Unit 0
CIO 2000 to CIO 2019
Unit 1
CIO 2010 to CIO 2029
Unit 2 CIO 2020 to CIO 2039
Unit 3
CIO 2030 to CIO 2049
Unit 4
CIO 2040 to CIO 2059
Unit 5
CIO 2050 to CIO 2069
Unit 6
CIO 2060 to CIO 2079
Unit 7
CIO 2070 to CIO 2089
Unit 8
CIO 2080 to CIO 2099
Unit 9
CIO 2090 to CIO 2109
:
:
Unit n
CIO 2000 + (n x 10) to
CIO 2000 + (n x 10) + 19
:
:
Unit 94
CIO 2940 to CIO 2959
Note
32
Temperature Control Unit
RAM
I/O refresh
Power ON
or restart
I/O refresh
At power ON or restart if
pin 8 of DIP switch is ON.
Operation Data is exchanged between the words allocated to the Temperature
Control Unit in the Special I/O Unit Area in the CIO Area of the CPU Unit and
the Temperature Control Unit. The Operation Data includes the Process Val-
ues, Set Points, Stop Bits, Start AT Bits, Stop AT Bits, and other basic data.
Operation data is exchanged each cycle time during the I/O refresh period.
Input data is transferred from the Temperature Control Unit to the CPU Unit
and output data is transferred from the CPU Unit to the Temperature Control
Unit.
Input data is
transferred from the
Temperature Control
Unit to the CPU Unit
and output data is
transferred from the
CPU Unit to the
Temperature Control
Unit each cycle.
1. For Two-loop Temperature Control Units, the read and write values for the
heater burnout alarm are transferred.
2. The Special I/O Unit Area words that are allocated to the Temperature
Control Unit in the CIO Area are determined by the setting of the unit num-
ber switch on the front panel of the Unit. Refer to 2-3-3 Unit Number
Switches for details on the method used to set the unit number switch.
3. If two or more Special I/O Units are assigned the same unit number, an
"UNIT No. DPL ERR" error (in the Programming Console) will be generat-
ed (A40113 will turn ON) and the PLC will not operate.
Temperature Control
Unit backup area
EPROM
Save Bit
turned ON
Temperature Control Unit
Operation Data
Output data for loops
CIO n
1 and 2 (output
to
CIO n + 2 refresh)
Input data for loops 1
CIO n + 3
and 2 (input refresh)
to
CIO n + 9
Output data for loops 3
CIO n + 10
and 4 (output refresh)
to
(See note 1.)
CIO n + 12
CIO n + 13 Input data for loops 3
to
and 4 (input refresh)
CIO n + 19
(See note 1.)
n = 2000 + (10 x unit number)
Section 2-5