Omron EJ1G User Manual page 122

Programless Communications
Basic Operations
1,2,3...
Data register Value
D0 2
D1 0
D2 0
D3 *
D4 Step 3 Channel 1 Process Value
D5 Step 3 Channel 2 Process Value
D500 2
D501 0
1,2,3...
Data register Value
D0 0
D1 1
D500 0
D501 1
D502 0
D503 0
D504 100
D505 100
4. Check operation.
Turn OFF the power to the EJ1G and PLC and then turn the power back
ON. It does not matter which one is turned ON first. Refer to the following
information and check the operation.
Monitoring EJ1G Set Values
Use the following procedure to confirm that the channel 1 and channel 2 pro-
cess values can be read.
1. Set the Read Request Bits allocated in PLC memory (D500) to 2.
2. Confirm that the Read Response Bits (D0) are set to 2.
3. Confirm that D4 and D5 are set to the channel 1 and channel 2 process
values.
The EJ1G set value will be continuously read if D500 is set to 2. Set D500
to 0 to stop reading the set value.
Meaning
Read Response Bits
Setting Change Response Bits
Operation Command Response Bits
Communications Status
Read Request Bits
Setting Change Request Bits
Changing EJ1G Set Values
Use the following procedure to confirm that the channel 1 and channel 2 set
points change.
1. Set D504 and D505 in PLC memory to 100.
2. Set the Setting Change Request Bits (D501) to 1.
3. Set the Setting Change Response Bits (D1) to 1.
4. Use the EST2-2C-MV3 CX-Thermo Support Software to confirm that the
EJ1G channel 1 and channel 2 set points have changed to 100. To check
operation again, set D501 to 0 and once D1 has changed to 0 repeat the
procedure from step 1.
Meaning
Read Response Bits
Setting Change Response Bits
Read Request Bits
Setting Change Request Bits
Operation Command Request Bits
Operation Command Code
Channel 1 Set Point
Channel 2 Set Point
Procedure step number and confirmation item
Step 2: Set to 2 by the system.
Step 3: Set to channel 1 process value by the system.
Step 3: Set to channel 2 process value by the system.
Step 1: Set from PLC user program.
Procedure step number and confirmation item
Step 3: Set to 1.
Step 2: Set from PLC user program.
Step 1: Set from PLC user program.
Step 1: Set from PLC user program.
Section 5-6
101