Omron Sysmac CJ Series, Operation Manual

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41
Data Exchange with the CPU Unit Section 2-5
Two-loop Units
I/O Address Loop Name Function
Word Bits
Outputs
(CPU Unit
to Tem-
perature
Control
Unit) n 00 to 15 Loop 1 Set Point Set the Set Point for the loop as 4-digit BCD or 16-bit binary.
For negative BCD values, set the most significant digit to F.
The values set here are transferred to RAM.
n+1 00 to 15 Loop 2 Set Point
n+2 15 Loop 1 Save Bit Operating Parameters are written from RAM to EEPROM in the
Temperature Control Unit when a Save Bit is turned ON. Refer to
2-6 Data Ranges for a list of the specific parameters that are writ-
ten.
DO NOT turn OFF the power supply when data is being written
from RAM to EEPROM. Confirm that the Save Completed Flag
has turned ON before turning OFF the power supply.
14 Loop 2 Save Bit
13 Loop 1 Change PID
Constants Bit
When a Change PID Constants Bit is turned ON, the correspond-
ing PID Constants Calculated Flag will turn OFF and the PID con-
stants stored as Operating Parameters will be retransferred to the
Temperature Control Unit.
12 Loop 2 Change PID
Constants Bit
08 to 11 --- --- Leave set to all zeros.
7 --- --- Leave set to 0.
6 Loop 1 Stop Bit Turn OFF the Stop Bit to perform temperature control for loop 1
and turn it ON to stop temperature control for loop 1.
The Stop Bit will not function if pin 1 on the DIP switch is OFF and
the CPU Unit is in PROGRAM mode.
5 --- --- Leave set to 0.
4 Loop 2 Stop Bit Turn OFF the Stop Bit to perform temperature control for loop 2
and turn it ON to stop temperature control for loop 2.
The Stop Bit will not function if pin 1 on the DIP switch is OFF and
the CPU Unit is in PROGRAM mode.
3 Loop 1 Stop AT Bit Turn ON the Stop AT Bit to stop autotuning for loop 1. The status of
the Stop AT Bit is ignored if autotuning is not being performed.
2 Loop 1 Start AT Bit Turn ON the Start AT Bit to start autotuning for loop 1. The status
of the Stop AT Bit is ignored if the Stop AT Bit for loop 1 is ON.
1 Loop 2 Stop AT Bit Turn ON the Stop AT Bit to stop autotuning for loop 2. The status of
the Stop AT Bit is ignored if autotuning is not being performed.
0 Loop 2 Start AT Bit Turn ON the Start AT Bit to start autotuning for loop 2. The status
of the Stop AT Bit is ignored if the Stop AT Bit for loop 2 is ON.