Omron Sysmac CJ Series, Operation Manual

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42
Data Exchange with the CPU Unit Section 2-5
Inputs
(Tempera-
ture Con-
trol Unit to
CPU Unit) n+3 00 to 15 Loop 1 Process Value The current process value is stored in 4-digits BCD or 16-bits
binary.
For negative BCD values, the most significant digit will be F.
A sensor error will occur if the specified range is exceeded, the
Sensor Error Flag will turn ON, and the process value will be
CCCC.
n+4 00 to 15 Loop 2 Process Value
n+5 00 to 15 Loop 1 Set Point The current set point is stored in 4-digits BCD or 16-bits binary.
For negative BCD values, the most significant digit will be F.
n+6 00 to 15 Loop 2 Set Point
n+7 12 to 15 Loop 1 Decimal Point The use of a decimal places is specified for the process value and
set point.
0: No decimal places
1: One decimal place
08 to 11 Loop 2 Decimal Point
04 to 07 Loop 1 Setting Error
Number
The number of the setting in which a setting error exists is stored
in hexadecimal. Refer to
5-1 Error and Alarm Processing for
details.
00 to 03 Loop 2 Setting Error
Number
n+8 15 Loop 1 Save Com-
pleted Flag
The Save Completed Flag turns ON when writing data from RAM
to EEPROM has been completed. The write is started by turning
ON bit 15 of CIO (n+2), the Save Bit. The Save Completed Flag
turns OFF when the Save Bit turns ON. (It is OFF immediately
after power is turned ON.)
14 Sensor Error
Flag The Sensor Error Flag turns ON for the following:
A sensor is not connected.
The connection to sensor is broken.
A temperature exceeding the specified temperature range has
been input.
13 CT Overflow
Flag The CT Overflow Flag turns ON if the heater current detected by
the CT (Current Transformer) exceeds 55.0 A.
12 Fatal Control
Error Flag The Fatal Control Error Flag turns ON for the following:
Cold-junction compensator error, CPU Unit WDT error
11 Standby Flag The Standby Flag turns ON when the Temperature Control Unit is
waiting for I/O refreshing after power is turned ON or the Unit is
restarted.
10 PID Con-
stants Calcu-
lated Flag The PID Constants Calculated Flag turns ON when the PID con-
stants calculated for autotuning have been updated.
When this flag is ON, the PID constants in the Operating Parame-
ters Output Area have not been output to the Temperature Control
Unit. When this flag is OFF, the PID constants in the Operating
Parameters Output Area have been output to the Temperature
Control Unit.
09 Setting Error
Flag The Setting Error Flag turns ON when there is a setting error in the
settings in the I/O memory of the CPU Unit.
08 Stop Flag When the Stop Flag is OFF, the Temperature Control Unit is con-
trolling temperature. When it is ON, the Temperature Control Unit
is not controller temperature.
05 to 07 --- Leave set to all zeros.
04 Control Out-
put Flag The Control Output Flag is ON when the control output is ON.
03 AT Flag The AT Flag is ON when autotuning is being performed. The AT
Flag is OFF when autotuning is not being performed.
02 HB Flag The HB (heater burnout) Flag turns ON if the detected heater cur-
rent reaches or exceeds the value set as the Heater Burnout Cur-
rent.
I/O Address Loop Name Function
Word Bits