Omron EJ1 User Manual

116
Programless Communications Section 5-1
4. Check operation.
Turn OFF the power to the EJ1 and PLC and then turn the power back ON.
It does not matter which one is turned ON first. Refer to the following infor-
mation and check the operation.
Basic Operations
■ Monitoring EJ1 Set Values
Use the following procedure to confirm that the channel 1 and channel 2 pro-
cess values can be read.
1,2,3... 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 EJ1 set value will be continuously read if D500 is set to 2. Set D500
to 0 to stop reading the set value.
■ Changing EJ1 Set Values
Use the following procedure to confirm that the channel 1 and channel 2 set
points change.
1,2,3... 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
EJ1 channel 1 and channel 2 set points have changed to 100. To check op-
eration again, set D501 to 0 and once D1 has changed to 0 repeat the pro-
cedure from step 1.
Data register Value Meaning Procedure step number and confirmation item
D0 2 Read Response Bits Step 2: Set to 2 by the system.
D1 0 Setting Change Response Bits
D2 0 Operation Command Response Bits
D3 * Communications Status
D4 Step 3 Channel 1 Process Value Step 3: Set to channel 1 process value by the system.
D5 Step 3 Channel 2 Process Value Step 3: Set to channel 2 process value by the system.
D500 2 Read Request Bits Step 1: Set from PLC user program.
D501 0 Setting Change Request Bits
Data register Value Meaning Procedure step number and confirmation item
D0 0 Read Response Bits
D1 1 Setting Change Response Bits Step 3: Set to 1.
D500 0 Read Request Bits
D501 1 Setting Change Request Bits Step 2: Set from PLC user program.
D502 0 Operation Command Request Bits
D503 0 Operation Command Code
D504 100 Channel 1 Set Point Step 1: Set from PLC user program.
D505 100 Channel 2 Set Point Step 1: Set from PLC user program.

Omron EJ1 Specifications

General

Brand	Omron
Model	EJ1
Category	Temperature Controller
Language	English