Omron CJ Series Operation Manual page 68
Sysmac temperature control units
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Data Exchange with the CPU Unit
Initialization Data
Contents
DM word
15
14
D (m+0)
Loop 1
Alarm 1 mode
3
2
2
2
2
D (m+1)
Loop 3 (See note 1.)
Alarm 1 mode
3
2
2
2
2
D (m+2)
Loop 1: Alarm 1 hysteresis
D (m+3)
Loop 1: Alarm 2 hysteresis
D (m+4)
Loop 2: Alarm 1 hysteresis
D (m+5)
Loop 2: Alarm 2 hysteresis
D (m+6)
Loop 3: Alarm 1 hysteresis (See note 1.)
D (m+7)
Loop 3: Alarm 2 hysteresis (See note 1.)
D (m+8)
Loop 4: Alarm 1 hysteresis (See note 1.)
D (m+9)
Loop 4: Alarm 2 hysteresis (See note 1.)
Note
Starting DM Area Word
Initialization Data
Details
DM address
Loop
Word
Bits
D (m+0)
12 to 15
Loop 1
08 to 11
04 to 07
Loop 2
00 to 03
D (m+1)
12 to 15
Loop 3
08 to 11
04 to 07
Loop 4
00 to 03
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.
The following table shows the specific applications of the bits and words in the
Initialization Data.
13
12
11
10
09
Alarm 2 mode
1
0
3
2
1
2
2
2
2
Alarm 2 mode
1
0
3
2
1
2
2
2
2
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 alarm mode and alarm hysteresis settings for loops 3 and 4 will
not be used and will be ineffective even if they are set.
2. The alarm modes can be set to "FF" to disable the alarms for the corre-
sponding loop. In this case, the loop's control operation will stop and the
ERC Indicator will not light to indicate alarms.
For example, write "FFFF" to D (m+1) to disable loops 3 and 4.
The starting DM Area word (m) for a Special I/O Unit is:
m = 20000 + (100 × unit number)
The following table provides details of the Initialization Data settings. For more
details, refer to 2-6 Data Ranges. These words are output from the CPU Unit
to the Temperature Control Unit.
Setting
Alarm 1 mode
Alarm 2 mode
Alarm 1 mode
Alarm 2 mode
Alarm 1 mode
Alarm 2 mode
Alarm 1 mode
Alarm 2 mode
Bit
08
07
06
05
04
Loop 2
Alarm 1 mode
0
3
2
1
0
2
2
2
2
2
Loop 4 (See note 1.)
Alarm 1 mode
0
3
2
1
0
2
2
2
2
2
Set each loop's alarm modes in BCD (0 to 9), as follows:
0: No alarm
1: Upper and lower-limit alarm
2: Upper-limit alarm
3: Lower-limit alarm
4: Upper and lower-limit range alarm
5: Upper and lower-limit alarm with standby sequence
6: Upper-limit alarm with standby sequence
7: Lower-limit alarm with standby sequence
8: Absolute-value upper-limit alarm
9: Absolute-value lower-limit alarm
The values written here are written to RAM.
Section 2-5
03
02
01
00
Alarm 2 mode
3
2
1
0
2
2
2
2
Alarm 2 mode
3
2
1
0
2
2
2
2
Units
45
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