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121
Programless Communications
Section 5-1
3.
Confirm that the Setting Change Response Bits (D00001) have been set
to 0001.
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 D01501 to 0000 and once D00001 has changed to 0000 repeat the
procedure from step 1.
■
If Not Operating Correctly
Check the following items if the operation is incorrect.
• Are the wiring and settings correct?
• Was the power cycled once the EJ1 and PLC settings were completed?
(The EJ1 settings are enabled only after the EJ1 is reset.)
Checking Operation
with the MELSEC-Q/
QnA/QnAS Series
This section describes how to check operation for the configuration shown
below.
1,2,3...
1.
Connect the EJ1 and PLC.
Connect the EJ1N-HFU and Serial Communications Unit as shown in the
following diagram.
DM Area Value
Meaning
Procedure step number and confirmation item
D00000
0000
Read Response Bits
D00001
0001
Setting Change Response Bits
Step 3: Set to 0001 by the system.
D01500
0000
Read Request Bits
D01501
0001
Setting Change Request Bits
Step 2: Set from PLC user program.
D01502
0000
Operation Command Request Bits
D01503
0000
Operation Command Code
D01504
0064
Channel 1 Set Point
Step 1: Set from PLC user program.
D01505
0064
Channel 2 Set Point
Step 1: Set from PLC user program.
MELSEC-Q/QnA/QnAS-series PLC
EJ1
HFU
EDU
TC
Unit
No. 0
RS-232C/422
ch1
Unit
No. 1
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: ......