Omron EJ1 User Manual page 145

Programless Communications
DM Area
D00000
D00001
D00002
D00003
D00004
D00005
Note
Basic Operations
1,2,3...
DM Area Value
D00000 0002 Read Response Bits
D00001 0000 Setting Change Response Bits
D00002 0000 Operation Command Response Bits
D00003 *000 Communications Status
D00004 Step 3 Channel 1 Process Value
D00005 Step 3 Channel 2 Process Value
D01000 0002 Read Request Bits
D01001 0000 Setting Change Request Bits
1,2,3...
120
If the allocated words shown below are already in use, change the words
referring to Programless Communications Upload/Download Data Area
(Variable Type: F0/B0) on page 132 and to Programless Communications
Upload/Download Start Address (Variable Type: F0/B0) on page 133.
Contents (monitor value)
Read Response Bits
Setting Change Response Bits
Operation Command Response Bits
Communications Status
Monitor Value A
Monitor Value B
When setting programless uploads and downloads, be sure that the words
being used in PLC memory are not otherwise used in the program or by other
devices.
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 information and check the operation.
■ Monitoring EJ1 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 (D01000) to 0002.
2. Confirm that the Read Response Bits (D00000) are set to 0002.
3. Confirm that D00004 and D00005 are set to the channel 1 and channel 2
process values.
The EJ1 set value will be continuously read if D01000 is set to 0002. Set
D01000 to 0000 to stop reading the set value.
Meaning
■ Changing EJ1 Set Values
Use the following procedure to confirm that the channel 1 and channel 2 set
points change.
1. Set D01504 and D01505 in PLC memory to 0064.
2. Set the Setting Change Request Bits (D01501) to 0001.
DM Area
D01500 Read Request Bits
D01501 Setting Change Request Bits
D01502 Operation Command Request Bits
D01503 Operation Command Code
D01504 Set Value A
D01505 Set Value B
Procedure step number and confirmation item
Step 2: Set to 0002 by the system.
Step 3: Set to the 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.
Section 5-1
Contents (set value)