Omron EJ1G, User Manual, Page: 132 / 237

111
Programless Communications
Section 5-6
• Multi Read
The parameters set in the Programless Upload Setting are read continu-
ously.
• Read Settings
With the normal monitor operation, the value set under Programless Up-
load Setting is read to the upload data area in PLC memory. With the Read
Setting operation, the value set under Programless Download Setting is
read to the upload data area in PLC memory to confirm that the setting is
correct.
Upload Area Download Area
Value
Setting Change
Response Bits
Operation Command
Response Bits
Address Value Address
m+0
m+1
m+2
m+4
···
n+0
n+1
n+2
n+4
Setting Change
Request Bits
Operation Command
Request Bits
Set value
Communications
Status
m+3 n+3
Operation
Command Code
0002
xxxx
0002
PLC EJ1G
HFU TC4/TC2
XXXX
When the Read Request Bits are set (step 1), steps 2 and 3 performed automatically.
1. The Read Request Bits
are set by the PLC.
2. The EJ1G sets the Read
Response Bits.
3. The EJ1G refreshes
the monitor value.
Upload Area Download Area
Value
Setting Change
Response Bits
Operation Command
Response Bits
Address Value Address
m+0
m+1
m+2
m+4
n+0
n+1
n+2
n+4
Setting Change
Request Bits
Operation Command
Request Bits
Communications
Status
m+3 n+3
Operation
Command Code
0003
Set Value A
0003
EJ1G PLC
HFU TC4/TC2
Set Value A
Same parameter
Programless
Download
Setting
1. The Read Request Bits are
set by the PLC.
3. The EJ1G sets the
Read Response Bits.
2. The EJ1G refreshes
the monitor value.
Set Value A