Omron EJ1G, User Manual

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112
Programless Communications
Section 5-6
• Stop Operation
Operation is stopped after a series of operations has been completed.
■
Monitor Values
If the monitor value has a decimal point, keep the decimal point in mind when
handling the monitor value.
Example: monitor value 03E8H or 1000
→
100.0
The set value in the EJ1G will not change even if the monitor value is
changed.
■
Checking Programless Communications Operation from the PLC
To confirm that programless communications are working from the PLC, con-
firm that reserved bit 15 of the Communications Status under the Programless
Download Settings is changing. Bit 15 repeatedly turns ON/OFF during com-
munications. Bit 15 alternates between ON and OFF, changing at each pro-
gramless communications.
Example: Multi Read
Each time all the parameters set under Programless Upload Settings are
written to the PLC, bit 15 changes between ON and OFF.
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
1. The Read Request Bits
are cleared by the PLC.
2. The EJ1G clears the
Read Response Bits.