Omron EJ1 User Manual page 169

Programless Communications
Operation Commands
PLC
Address
m+0
m+1
m+2
m+3
m+4
PLC
Address
m+0
m+1
m+2
m+3
m+4
144
■ Set Values
• If the set value contains a decimal point, omit the decimal point and set
the value.
Example: 100.0
• When changing set values, always set a new value within the setting
range. The set value will not be changed if a value outside the range is
set.
When the EJ1 confirms that the Operation Command Request Bits have been
set by the PLC, the EJ1 reads the operation command code set in PLC mem-
ory and accepts the operation command.
To execute an operation command, set the operation command code in the
PLC memory words corresponding to the Programless Download Settings
and then set the Operation Command Request Bits.
Note Refer to 5-1-5 Operation Command Codes for Programless Com-
munications for information on operation command codes.
• Single Operation Command
Operation commands are accepted only once.
4. The EJ1 sets the Operation
Command Response Bits.
Upload Area Download Area
Memory Address
Read Response
n+0
Bits
Setting Change
n+1
Response Bits
0001 n+2
Communications
n+3
Status
Monitor value n+4
1. The Operation Command Code
is changed by the PLC.
Upload Area
Memory Address
Read Response
n+0
Bits
Setting Change
n+1
Response Bits
0000 n+2
Communications
n+3
Status
Monitor value n+4
6. The EJ1 clears the Operation
Command Response Bits.
1000 or 03E8H: set value
Memory
Read Request Bits
2. The Operation Command
Request Bits are set by the PLC.
Setting Change
Request Bits
0001
zzzz
Set value
3. The EJ1 reads the operation
command code.
Download Area
Memory
Read Request Bits
5. The Operation Command Request
Bits are cleared by the PLC.
Setting Change
Request Bits
0000
zzzz
Set value
Section 5-1
EJ1
HFU TC4/2
zzzz zzzz