Omron Sysmac CJ Series, Руководство по эксплуатации

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Data Exchange with the CPU Unit Section 2-5
Special I/O Unit
Restart Bits
To restart the Unit after changing the contents of the DM Area or correcting an
error, turn ON the power to the PLC again or turn the Special I/O Unit Restart
Bit ON and then OFF again.
Note If the error is not corrected by restarting the Unit or turning the Special I/O
Unit Restart Bit ON and then OFF again, refer to
SECTION 5 Error and Alarm
Processing .
2-5-3 Memory in the Temperature Control Unit
The Temperature Control Unit has two types of memory: RAM and EEPROM.
As shown in the following table and illustration, data for the Temperature Con-
trol Unit is written from the words allocated in the CPU Unit to the RAM in the
Temperature Control Unit. Some of this data can be written from the RAM to
EEPROM by turning ON a Save Bit.
If pin 8 on the DIP switch is ON, the data stored in the EEPROM will automat-
ically be transferred to the DM Area in the CPU Unit when power is turned ON
or the Temperature Control Unit is restarted, enabling operation with the data
stored in the EEPROM.
Note 1. The PID constants resulting from autotuning are automatically written to
RAM at the end of autotuning.
2. The EEPROM has a life of 100,000 writes.
Special I/O Unit
Area word
address
Function
A50200 Unit No. 0 Restart Bit Restarts the Unit when turned
ON and then OFF again.
A50201 Unit No. 1 Restart Bit
: :
A50215 Unit No. 15 Restart Bit
A50300 Unit No. 16 Restart Bit
: :
A50715 Unit No. 95 Restart Bit
Memory allocations in CPU
Unit
Main settings Transfer from
CPU Unit areas
to RAM in
Temperature
Control Unit
Transfer from RAM
to EEPROM
Transfer from
EEPROM in
Temperature Control
Unit to CPU Unit areas
CIO Area Operation Data Set Point
Heater Burnout
Current I/O refresh period Not transferred.
DM Area Initialization Data Alarm Mode
Alarm Hysteresis Power ON or Unit
restart Not transferred.
Operating Param-
eters Alarm SV
Input Compensa-
tion
Control Period
Sensitivity I/O refresh period When Save Bit in
Special I/O Unit
Area is turned ON.
When power is turned
ON or the Unit is
restarted with pin 8 on
the DIP switch turned
ON.
Proportional Band
Integral Time
Derivative Time I/O refresh period
as long as PID
Constants
Changed Flag is
OFF (See note.)