124
Programless Communications
Section 5-1
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 infor-
mation and check the operation.
Basic Operations
■
Monitoring EJ1 Set Values
Use the following procedure to confirm that the channel 1 and channel 2 pro-
cess values can be read.
1,2,3...
1.
Set the Read Request Bits allocated in PLC memory (D1500) to 2.
2.
Confirm that the Read Response Bits (D0) are set to 2.
3.
Confirm that D4 and D5 are set to the channel 1 and channel 2 process
values.
The EJ1 set value will be continuously read if D1500 is set to 2. Set D1500
to 0 to stop reading the set value.
■
Changing EJ1 Set Values
Use the following procedure to confirm that the channel 1 and channel 2 set
points change.
1,2,3...
1.
Set D1504 and D1505 in PLC memory to 100.
2.
Set the Setting Change Request Bits (D1501) to 1.
3.
Set the Setting Change Response Bits (D1) to 1.
4.
Use the CX-Thermo Support Software to confirm that the EJ1 channel 1
and channel 2 set points have changed to 100. To check operation again,
set D1501 to 0 and once D1 has changed to 0 repeat the procedure from
step 1.
D5
Monitor Value B
D1505
Set Value B
···
···
···
···
Data register
Contents (monitor value)
Data register
Contents (set value)
Data register Value
Meaning
Procedure step number and confirmation item
D0
2
Read Response Bits
Step 2: Set to 2 by the system.
D1
0
Setting Change Response Bits
D2
0
Operation Command Response Bits
D3
*
Communications Status
D4
Step 3 Channel 1 Process Value
Step 3: Set to channel 1 process value by the system.
D5
Step 3 Channel 2 Process Value
Step 3: Set to channel 2 process value by the system.
D1500
2
Read Request Bits
Step 1: Set from PLC user program.
D1501
0
Setting Change Request Bits
Data register Value
Meaning
Procedure step number and confirmation item
D0
0
Read Response Bits
D1
1
Setting Change Response Bits
Step 3: Set to 1.
D1500
0
Read Request Bits
D1501
1
Setting Change Request Bits
Step 2: Set from PLC user program.
D1502
0
Operation Command Request Bits
Содержание EJ1 EtherCAT
Страница 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
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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 ...
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