Omron CJ2 - Page 85

3-5
3 Nomenclature and Functions
CJ2 CPU Unit Hardware User’s Manual
3-1 CPU Units
3
3-1-1 CPU Section
*1 The following data cannot be overwritten when pin 1 is ON:
• All parts of the user program (programs in all tasks)
• All data in the parameter area (such as the PLC Setup and I/O table)
When pin 1 is ON, the user program and parameter area will not be cleared when the memory clear opera-
tion is performed from a Programming Device.
*2 I/O memory files (AUTOEXEC.IOM and ATEXEC@@@.IOM) are automatically transferred when power is
turned ON if pin 2 is set to ON. Both the program (AUTOEXEC.OBJ) and parameter area (AUTOEXEC.STD)
files must be stored on the Memory Card. It is not necessary for the I/O memory files (AUTOEXEC.IOM and
ATEXEC@@@.IOM) to be stored on the Memory Card.
*3 When pin 7 is ON, simple backup reading from the Memory Card is given priority, so even if pin 2 is ON, the
user program is not automatically transferred from the Memory Card when power is turned ON.
*4 Connecting to the PLC is not possible from the CX-One Support Software using SYSMAC WAY even if pin 5 on
the DIP switch is OFF and the PLC Setup is set to the Host Link protocol (i.e., the default setting).
*1 Set using the CX-Programmer.
*2 Connection is not possible from CX-One Support Software using the SYSMAC WAY protocol.
SW5 Set to ON to automatically detect the
baud rate of the CX-Programmer
(peripheral bus only) when using the
serial port (RS-232C).
*4
ON Serial port (RS-232C) commu-
nications condition: Automati-
cally detect CX-Programmer
(peripheral bus only) baud rate.
OFF
OFF Serial port (RS-232C) commu-
nications condition: According
to CX-Programmer communica-
tions settings in PLC Setup.
(Refer to Ta b l e 1 .)
SW6 Set pin 6 to ON or OFF and use
A395.12 in the program to create a
user-defined condition without using
an Input Unit.
ON User-defined pin. Turns ON the
User DIP Switch Pin Flag
(A395.12).
OFF
OFF User-defined pin. Turns OFF
the User DIP Switch Pin Flag
(A395.12).
SW7 Set the simple backup type. (Refer to
Table 2 below.)
--- Specifies the simple backup
type.
OFF
SW8 --- Always
OFF.
--- OFF
Table 1
Setting
Pin 5 of DIP switch on front
panel
PLC Setup (Serial port (RS-232C))
*1
Connection
1. Peripheral bus
(automatic detection)
ON ---
2. Peripheral bus OFF (default) Peripheral bus
3. Host Link
*2
OFF (default) Host Link (default)
4. NT Link OFF (default) NT Link
5. No-protocol OFF (default) No-protocol
6. Serial Gateway OFF (default) Serial Gateway
Pin no. Usage Setting Function Default