Omron Sysmac CJ Series, Operation Manual

Page: 69 / 117

46
Data Exchange with the CPU Unit Section 2-5
Starting DM Area Word The starting DM Area word (m) for a Special I/O Unit is:
m = 20000 + (100
×
unit number)
2-5-6 Operating Parameters
The Temperature Control Unit’s Operating Parameters are set in the DM
words allocated to the Temperature Control Unit as a Special I/O Unit. Operat-
ing Parameters include the Alarm SVs, Control Periods, Proportional Bands,
Integral Times, and other parameters.
Operating Parameters are exchanged each cycle 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 Con-
trol Unit.
Note 1. Loops 3 and 4 are applicable to Temperature Control Units with four control
loops only. If a Temperature Control Unit with two control loops is being
used, the settings for loops 3 and 4 will not be used and will be ineffective
even if they are set.
2. The Special I/O Unit Area words that are allocated to the Temperature
Control Unit in the DM 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, a
“UNIT No. DPL ERR” error (in the Programming Console) will be generat-
ed (A40113 will turn ON) and the PLC will not operate.
D (m+2) 00 to 15 Loop 1 Alarm 1 hysteresis Set each alarm’s hysteresis in 4-digit BCD or 16-bit binary, accord-
ing to the Data Format set on the Temperature Control Unit’s DIP
switch.
The values written here are written to RAM.
D (m+3) 00 to 15 Alarm 2 hysteresis
D (m+4) 00 to 15 Loop 2 Alarm 1 hysteresis
D (m+5) 00 to 15 Alarm 2 hysteresis
D (m+6) 00 to 15 Loop 3 Alarm 1 hysteresis
D (m+7) 00 to 15 Alarm 2 hysteresis
D (m+8) 00 to 15 Loop 4 Alarm 1 hysteresis
D (m+9) 00 to 15 Alarm 2 hysteresis
DM address Loop Setting Units
Word Bits
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 during
SYSMAC CJ-series CPU Unit
Unit 0
Allocated DM addresses
D20000 to D20099
Temperature Control Unit
Operating Parameters
m = 20000 + (100 x unit number)
Unit 1 D20100 to D20199
Unit 2 D20200 to D20299
Unit 3 D20300 to D20399
Unit 4 D20400 to D20499
Unit 5 D20500 to D20599
Unit 6 D20600 to D20699
Unit 7 D20700 to D20799
Unit 8 D20800 to D20899
Unit 9 D20900 to D20999
:
Unit n
n
×
100 to
n
×
100 + 99
:
Unit 94 D29400 to D29499
Output data for loops 1
and 2 (output refresh)
Input data for loops 1
and 2 (input refresh)
Output data for loops 3
and 4 (output refresh)
(See note 1.)
D (m+10)
to
D (m+29)
D (m+30)
to
D (m+49)
D (m+70)
to
D (m+89) Input data for loops 3
and 4 (input refresh)
(See note 1.)
D (m+50)
to
D (m+69)