Omron CP1L-EL20DR-D Operation Manual page 56

Part Names and Functions
!Caution Always turn OFF the power supply to the PLC before mounting or removing
22
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).
(4) Memory Cassette Slot
Used for mounting a CP1W-ME05M Memory Cassette. When mounting
a Memory Cassette, remove the dummy cassette.
Data, such as CP1L-EL/EM CPU Unit programs, parameters, and data
memory, can be transferred to the Memory Cassette to be saved.
(5) Built-in Analog Input Connector
By applying 0 to 10 V of external voltage, it is possible to adjust the value
of A642 and A643 within a range of 0 to 1000. This input is not isolated.
(Refer to 8-4 Built-in Analog Input.)
(6) Ethernet Port
Using the built-in Ethernet port, user can easily connect the CX-Pro-
grammer to PLCs Online or exchange data between CP1L-EL/EM series
PLCs and other Ethernet devices from either OMRON or another manu-
facturer. Various protocols are supported, including FINS/TCP, FINS/
UDP, Socket, SNTP, DNS.
(7) Input Indicators
The input indicators light when input terminal contacts turn ON.
(8) Power Supply, Ground, and Input Terminal Block
Power supply terminals Used to provide a 24-VDC power supply.
Ground terminals
Input terminals
(9) Option Board Slots
The following Option Boards can be mounted in either slot 1 (left) or slot
2 (right).
• CP1W-CIF01 RS-232C Option Board
• CP1W-CIF11/CIF12 RS-422A/485 Option Board
• CP1W-DAM01 LCD Option Board
• CP1W-ADB21/DAB21V/MAB221 Analog Option Board
an Option Board.
(10) Expansion I/O Unit Connector
CP-series Expansion I/O Units and Expansion Units (Analog I/O Units,
Temperature Sensor Units, or CompoBus/S I/O Link Units) can be con-
nected. Up to three Expansion Units or Expansion I/O Units can be con-
nected to a CPU Unit with 30 or 40 I/O points and one Expansion Unit or
Expansion I/O Unit can be connected to a CPU Unit with 20 I/O points.
(For details on using Expansion Units and Expansion I/O Units, refer to
SECTION 9 Using Expansion Units and Expansion I/O Units.)
(11) Output Terminal Block
The Output terminals are used for connecting output devices.
(12) Output Indicators
The output indicators light when output terminal contacts turn ON.
Protective ground ( ):
To prevent electric shock, ground to 100 Ω or less.
Used to connect input devices.
Section 2-1