216
Determining the Error from the Current Situation for Communications Errors
Section 8-4
Note
The baud rate and communications distance sometimes depend on the com-
munications partner.
Status
Possible cause
Countermeasure
The Smart Active Part (SAP)
does not communicate with
the EJ1.
Connection
Connection port
There is no power supply to the
EJ1.
Supply power from the EDU power
supply terminal.
The Programmable Terminal
connection is incorrect.
Refer to the Programmable Terminal,
RS-422A Converter, and EJ1 manu-
als and wire the connection correctly.
The SAP is not compatible with
the EJ1.
Use a SAP for the EJ1.
The SAP is not for direct con-
nection.
Use a SAP for direct Programmable
Terminal connection.
The RS-422A switch settings
are incorrect.
Refer to the product manual and
make the correct switch setting for
the communications conditions.
The Programmable Terminal
communications conditions are
different from the EJ1 communi-
cations settings.
Set the PT's baud rate the same as
the port B baud rate.
Hint:
The EJ1 baud rate is set under the Port B Communications
Baud Rate parameter.
• The available baud rate settings are 9.6 kbps (default),
19.2 kbps, 38.4 kbps, 57.6 kbps, and 115.2 kbps. (See note.)
• Set the settings other than baud rate to the following default
settings.
Port B Communications Data Length: 7 (bit)
Port B Communications Parity:
Even (bit)
Port B Communications Stop Bits:
2 (bit)
The PT communications settings are made on the PT System
Screen.
• Move to the System Screen, display the Communications
Settings Screen, and set the destination for the communica-
tions port to Temperature Controller.
• Set the baud rate the same as the EJ1 baud rate.
There is an HFU connected to
the EJ1.
Port B cannot be used for communi-
cations if an HFU is connected to the
EJ1.
Hint:
When Using HFUs
Connect to port A on the Programmable Terminal.
The following restrictions apply:
• The HFU cannot be used at the same time as the CX-
Thermo Support Software.
• The baud rate is fixed at 38.4 kbps.
If an HFU is Not Required
Disconnect the HFU and restart the EJ1.
CJ1W-CIF11
RS-422A Converter
EJ1
(RS-485)
NS-series
Connection
port
PT
Port A/Port B
EJ1
(EDU)
Port B
Содержание EJ1 EtherCAT
Страница 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
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Страница 213: ...188 Detailed Description of Services Section 6 4 ...
Страница 227: ...202 Detailed Description of Services Section 7 5 ...
Страница 251: ...226 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 8 8 ...
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