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Programless Communications
Section 5-1
• 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
EJ1
HFU
TC4/2
XXXX
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 EJ1 sets the Read
Response Bits.
3. The EJ1 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
EJ1
PLC
HFU
TC4/2
Set Value A
Same parameter
Programless
Download
Setting
Set Value A
1. The Read Request Bits are
set by the PLC.
3. The EJ1 sets the Read
Response Bits.
2. The EJ1 refreshes
the monitor value.
Set Value A
Summary of Contents for EJ1 EtherCAT
Page 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Page 3: ...iv ...
Page 19: ...xx ...
Page 213: ...188 Detailed Description of Services Section 6 4 ...
Page 227: ...202 Detailed Description of Services Section 7 5 ...
Page 303: ...278 Index ...
Page 305: ......