Omron EJ1 User Manual page 134

Programless Communications
DM Area Value
D00000 0000 Read Response Bits
D00001 0001 Setting Change Response Bits
D00500 0000 Read Request Bits
D00501 0001 Setting Change Request Bits
D00502 0000 Operation Command Request Bits
D00503 0000 Operation Command Code
D00504 0064 Channel 1 Set Point
D00505 0064 Channel 2 Set Point
Checking Operation
with MELSEC-Q/
QnAS Series
1,2,3...
Meaning
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.)
This section describes how to check operation for the configuration shown
below.
MELSEC-Q/QnAS Series
1. Connect the EJ1 and PLC.
Connect the EJ1@-HFU and Serial Communications Unit as shown in the
following diagram.
Procedure step number and confirmation item
Step 3: Set to 0001 by the system.
Step 2: Set from PLC user program.
Step 1: Set from PLC user program.
Step 1: Set from PLC user program.
ch1
RS-232C
Section 5-1
EJ1
HFU TC EDU
Unit Unit
No. 0 No. 1
113