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6
Exter
nal comm
unica
tion interf
ace
6-6
2.4 Communication parameter setting
Parameters and communication mode related to the communication that uses the RS-232C interface are set.
There are seven communication parameters.
Communication parameter set values
Item name
Set value
Initial value
Remarks
1
LINE
ONLINE, OFFLINE
ONLINE
Sets the mode of the communication with the computer (ONLINE/
OFFLINE).
The online command can be executed only in the ONLINE mode.
2
Baud Rate
9600, 19200,
38400, 57600,
115200
19200
Sets the communication speed.
When the communication speed is set at a high speed, the communication
error occurs easily.
If the error occurs frequently, set the communication speed to a low speed.
3
Length
7, 8
8
Sets the data bit length.
When the data bit length is set at "7 bits", KATAKANA characters cannot
be sent.
4
Stop Bits
1, 2
1
Sets the stop bit length.
If the communication error occurs frequently, set the stop bit length to "2
bits".
5
Parity
0: None, 1: Odd
2: Even
1
Sets the parity check.
Use the parity check as much as possible.
6
Flow
0: None
1: Xon/Xoff
2: RTS/CTS
1
Sets whether or not the data flow control using the XON/XOFF code or
RTS/CTS signal is performed.
When the data flow control is not performed, data missing may occur.
So, set the data flow control as much as possible.
7
Eof
0:CRLF 1:CR
0
Sets the line feed code.
■
Setting the communication mode and parameters
Step 1
Select [System] - [Communication
Setting] from the initial screen.
Setting the RS-232C communication
mode and parameters
Step 1
Step 2
Set the communication mode.
Press the F2 (ONLINE) or F3 (OFFLINE) key on
the "RS-232C" screen to change the setting
to [ONLINE] or [OFFLINE].
Step 3
Set the communication parameters.
Use the cursor keys to select the set value to
edit, input a numeric value, and then press
the ENTER key.
To set the data, press the ENTER key until the
cursor selects the numeric value in [Baud
Rate].
* When pressing the ESC key halfway, the
edited contents are canceled.
* Pressing the F4 key (INIT) initializes the
communication parameters.
Step 4
Press the ESC key to exit the data
editing.
Parameter initialization
NOTE
When using offline commands or connecting to the controller by support software, be sure to set the mode to
the ONLINE mode.
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