Omron CP1L CPU UNIT - 06-2007 Operation Manual page 68

Part Names and Functions
(3) Peripheral USB Port
Used for connecting to a personal computer for programming and moni-
toring by the CX-Programmer.
(4) Analog Adjuster
By turning the analog adjuster, it is possible to adjust the value of A642
within a range of 0 to 255. (Refer to 6-4 Analog Adjuster and External
Analog Setting Input.)
(5) External Analog Setting Input Connector
By applying 0 to 10 V of external voltage, it is possible to adjust the value
of A643 within a range of 0 to 256. This input is not isolated. (Refer to 6-
4 Analog Adjuster and External Analog Setting Input.)
(6) DIP Switch
CPU Units with 30 or 40 I/O Points
No. Setting
SW1 ON User memory write-
protected (See note.)
OFF User memory not
write-protected.
SW2 ON Data automatically
transferred from
Memory Cassette at
startup.
OFF Data not transferred.
SW3 ON A395.12 ON
OFF A395.12 OFF
SW4 ON Used for peripheral
bus.
OFF According to PLC
Setup.
SW5 ON Used for peripheral
bus.
OFF According to PLC
Setup.
SW6 OFF Keep turned OFF.
Note The following data will be write-protected if pin SW1 is turned ON:
• The entire user program (all tasks)
• All data in parameter areas (such as the PLC Setup)
When SW1 is turned ON, the user program and the data in the pa-
rameter areas will not be cleared even if the All Clear operation is
performed from a Peripheral Device (i.e., the CX-Programmer).
CPU Units with 14 or 20 I/O Points
No. Setting
SW1 ON User memory write-
protected (See note.)
OFF User memory not
write-protected.
Description Application
Used to prevent pro-
grams from being inad-
vertently overwritten.
Used to enable pro-
grams, Data Memory, or
parameters saved on a
Memory Cassette to be
opened by the CPU Unit
at startup.
This pin enables control-
ling a bit in memory with-
out using an input relay.
Used to enable a Serial
Communications Option
Board mounted in Option
Board Slot 1 to be used
by the peripheral bus.
Used to enable a Serial
Communications Option
Board mounted in Option
Board Slot 2 to be used
by the peripheral bus.
---
Description Application
Used to prevent pro-
grams from being inad-
vertently overwritten.
Section 2-1
Default
OFF
OFF
OFF
OFF
OFF
OFF
Default
OFF
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