139
Programless Communications
Section 5-1
Operation Procedure
Monitor
Once the PLC sets the value of the Read Request Bits, the EJ1 writes the
value set under Programless Upload Settings to the PLC memory area.
• Single Read
The parameters set in the Programless Upload Setting are read once.
PLC processing
EJ1 processing
Clears the Request
Bits.
1.
Clears the Response
Bits.
2.
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
0000
xxxx
0000
PLC
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
PLC
EJ1
HFU
TC4/2
xxxx
xxxx
0001
xxxx
0001
3. The EJ1 sets the Read
Response Bits.
5. The EJ1 clears the
Read Response Bits.
4. The Read Request Bits
are set by the PLC.
1. The Read Request Bits
are set by the PLC.
2. The EJ1 refreshes
the monitor value.
Содержание EJ1 EtherCAT
Страница 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Страница 3: ...iv ...
Страница 19: ...xx ...
Страница 213: ...188 Detailed Description of Services Section 6 4 ...
Страница 227: ...202 Detailed Description of Services Section 7 5 ...
Страница 251: ...226 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 8 8 ...
Страница 303: ...278 Index ...
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