Omron EJ1G User Manual page 180

Determining the Error from the Current Situation for Communications Errors
Cannot connect online
Connection
PC
Connection port
Computer Serial port
EJ1C
(EDU)
K3SC-10: Interface Converter
Cannot connect online
Connection
PC
Connection port
Computer ---
EJ1G
(HFU)
Status
There is no power supply to
the EJ1G.
There is no power supply to
the Interface Converter.
(RS-232C)
The EST2-2C-MV3 CX-
Thermo Support Software
K3SC-10
settings are incorrect.
EJ1G
(RS-485)
Connection
port
Port A
The Interface Converter com-
munications conditions are
different from the EJ1G com-
munications settings.
The Interface Converter con-
nection is incorrect.
There is no device on the
communications path with the
specified unit number.
There is a device on the com-
munications path with the
same unit number.
The EJ1G is connected to
port C on the HFU.
(RS-232C/
RS-485)
EJ1G
Connection
port
Port C
Possible cause
Supply power from the EDU power
supply terminal.
Supply power to the Interface Con-
verter.
Correct the communications settings.
Serial port:
Baud rate:
Data length:
Stop bit:
Parity:
Unit number:
Note Match the serial port and unit
Refer to the Interface Converter man-
ual and match the communications
conditions to the EJ1G communica-
tions settings.
Refer to the computer, Interface Con-
verter, and EJ1G manuals and wire
the connection correctly.
Specify a unit number in the commu-
nications settings for a device on the
communications path.
Change the unit number in the com-
munications settings so that the unit
numbers are not duplicated.
The EST2-2C-MV3 CX-Thermo Sup-
port Software cannot be connected to
the HFU.
Connect it to port A on the EDU.
Section 7-4
Countermeasure
COM (See note.)
38.4 (kbps)
7 (bit)
2 (bit)
Even (bit)
(See note.)
number settings to the system
used.
159