98
Programless Communications
Section 5-6
■
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 EJ1G and PLC settings were completed?
(The EJ1G settings are enabled only after the EJ1G is reset.)
Checking Operation
with MELSEC-Q/
QnAS Series
This section describes how to check operation for the configuration shown
below.
1,2,3...
1.
Connect the EJ1G and PLC.
Connect the EJ1G-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.
D00500
0000
Read Request Bits
D00501
0001
Setting Change Request Bits
Step 2: Set from PLC user program.
D00502
0000
Operation Command Request Bits
D00503
0000
Operation Command Code
D00504
0064
Channel 1 Set Point
Step 1: Set from PLC user program.
D00505
0064
Channel 2 Set Point
Step 1: Set from PLC user program.
MELSEC-Q/QnAS Series
EJ1G
HFU
EDU
TC
Unit
No. 0
RS-232C
CH1
Unit
No. 1
Содержание EJ1G
Страница 1: ...USER S MANUAL Modular Temperature Controllers for Gradient Temperature Control EJ1G Cat No H143 E1 01 ...
Страница 3: ...iv ...
Страница 17: ...xviii ...
Страница 21: ...xxii ...
Страница 53: ...32 Unit Configuration Examples Section 2 4 ...
Страница 69: ...48 Changing SPs During Operation Section 3 3 ...
Страница 81: ...60 Other Functions Section 4 5 ...
Страница 145: ...124 Other HFU Functions Section 5 7 ...
Страница 167: ...146 Detailed Description of Services Section 6 4 ...
Страница 189: ...168 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 7 8 ...
Страница 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Страница 237: ......