Omron CJ2 - 02-2010 User Manual page 324

9 PLC Setup
Mode (When Custom Settings Is Selected)
Select the serial communications mode for the built-in RS-232C port.
Parameter
Mode • Host link
• NT link (1:N)
• RS-232C (no-protocol)
• Peripheral Bus (Toolbus)
• Serial gateway
• Serial PLC Link (Polling
Unit)
• Serial PLC Link (Polled
Unit)
*1 The host link (SYSMAC WAY) is the communications mode for connection with a general host computer.
*2 Communications will not be possible with PTs set for 1:1 NT Links.
Related Settings for Each Selection Mode
Host link (default)
NT link (1:N)
RS-232C (No-protocol)
Peripheral Bus (Tool Bus)
Serial gateway
Serial PLC Link (Polling Unit)
Serial PLC Link (Polled Unit)
Host Link Settings
Use the Host Link Mode to perform communications using Host Link with a computer or other host
device and also when a baud rate other than 9,600 bps will be used.
• Unit Number (for CPU Unit in Host Link Mode)
Set the unit number for a PLC slave.
Parameter Settings
Unit Number 0 to 31
NT Link Settings
Use the NT Link Mode to perform communications with an OMRON Programmable Terminal (NS
Series or NT Series).
Baud Rate (bps)
Parameter
Baud Rate 115,200,
38,400 bps
9-26
Settings
Host link
Mode
Baud rate, parameter, unit number
Baud rate, NT/PC link max.
Baud rate, parameter, start code, end code, delay
Baud rate
Baud rate, parameter, response monitoring time
Communications settings, mode, number of link words, link method,
maximum unit number in NT Link or Serial PLC Link (No. NT/PC Link
Max.)
Communications settings, mode, Serial PLC Link Polled Unit unit
number
Default
0 This setting determines the
CPU Unit's unit number
when it is connected in a 1-
to-N (N=2 to 32) Host Link.
Settings Default
115,200 bps It is recommended to set to 115,200 bps when
setting this value from the CX-Programmer.
Default Function
*1 This setting determines whether
the serial port will operate in host
link mode or another serial com-
munications mode.
Related settings
Function Related flags and words
A619.02
(Serial Port Settings
Changing Flag)
Function
Related flags and
words
A619.02
(Serial Port Settings
Changing Flag)
*2
Update timing in
CPU Unit
Each cycle
Related flags and words
A619.02
(Serial Port Settings
Changing Flag)
CJ2 CPU Unit Software User's Manual