Omron CP1L-EM40DT1-D — 40 I/O PLC, Ethernet, PNP
SKU: CP1L-EM40DT1-DUSD 245.00
Omron CP1L-EM40DT1-D is a compact PLC with 40 I/O points (24 in / 16 out PNP), 10K steps program memory, built-in Ethernet, and 100 kHz high-speed counters — for OEM machine control.
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Product Overview
The CP1L-EM40DT1-D is the 40-point PNP-transistor variant in Omron's CP1L compact PLC line. The model code breaks down as: CP1L = series, EM = Ethernet + 10K steps memory, 40 = 40 I/O points, DT1 = transistor sourcing (PNP) output, D = 24 VDC power supply. So this is the right pick when you need 40 I/O with Ethernet on a PNP-input/output architecture (most modern Omron PLCs use PNP). The 40 I/O breakdown is 24 DC inputs and 16 transistor outputs. The 16 outputs are PNP sourcing, switching up to 300 mA each at 24 VDC. For applications needing relay outputs, look at the CP1L-EM40DR-D; for NPN outputs, the CP1L-EM40DT-D. On the connectivity side, the EM suffix means built-in Ethernet TCP/IP for programming, HMI connection, and Modbus/TCP or FINS/UDP communication with host systems. For new installations, use Ethernet for everything — programming, HMI, and host SCADA. The USB port on the front panel is for programming only and supports direct connection to CX-Programmer without a USB-serial adapter. The 10K steps program capacity handles most mid-size machine programs (about 10,000 ladder logic instructions). For larger programs, look at the CP1H series (20K steps) or CP2E (up to 64K steps). For most OEM machines (filling, packaging, assembly, dosing), 10K is plenty. Data memory is 32K words for holding recipes, historical data, and string handling. High-speed I/O is the CP1L's main advantage over the older CPM1A/CPM2A. The 100 kHz high-speed counters (4 axes) can read encoders or fast pulse trains; the 100 kHz pulse outputs (2 axes) drive stepper motors or send position commands to servo drives. For positioning applications, the CP1L-EM40DT1-D handles the work of a small motion controller at a fraction of the cost of a CP1H or NX PLC. Expansion is via CP1W-series I/O units, up to 3 stacked on the right side, for a maximum of 160 I/O total. Common expansions: CP1W-AD041 (4 analog inputs), CP1W-DA041 (4 analog outputs), CP1W-CIF11 (RS-485 serial port), CP1W-TS001 (2 thermocouple inputs). For the full CP1L family, see the 10/14/20/30/60-point siblings in the same 24 VDC PNP-transistor Ethernet line. Common use: standalone OEM machine (filling, packaging, assembly), with NS series HMI for operator interface. For new designs, consider the CP2E (newer, lower cost) or the NX102 (for EtherCAT I/O and motion). The CP1L is the long-term support pick — proven, widely deployed, easy to find programmers for.
Key Features
- 40 I/O class for medium-complexity machine control
- Ethernet connectivity for modern network integration
- High-speed counter support for motion/position tasks
- Suitable for OEM standard machine platform designs
- Compact footprint for efficient panel utilization
- Reliable controller choice for retrofit and new builds
- SKU: CP1L-EM40DT1-D
- Series: CP1L-EM
- I/O: 40 I/O
Best-Fit Applications
- Standalone control of a small packaging machine with NS HMI for operator interface
- OEM machine controller with 40 I/O for filling, dosing, or labelling systems
- Compact PLC for material handling conveyors with high-speed counter inputs from encoders
- Multi-station assembly machine with centralised CP1L-EM and CP1W expansion I/O per station
Buying Checklist
- Built-in Ethernet eliminates need for separate serial-to-Ethernet converter modules
- PNP transistor output matches modern sensor architecture — direct connection without relays
- 10K steps program memory handles most OEM machine programs without upgrade
- 100 kHz high-speed counters and pulse outputs cover simple motion and encoder reading
- CP1W expansion units up to 3 give 160 I/O max — flexible for growing systems
Technical Specifications
| Model | CP1L-EM40DT1-D |
|---|---|
| Series | CP1L-EM |
| Total I/O Points | 40 points |
| Output Type | Transistor (PNP) |
| Power Supply | DC24V |
| Built-in Ethernet | Yes |
| Program Capacity | 5K steps |
| Operating Temperature | 0 to +55°C |
Resources & Downloads
FAQ for CP1L-EM40DT1-D
What's the difference between CP1L-EM40DT1-D and CP1L-EM40DT-D?
DT1 is PNP (sourcing) output; DT is NPN (sinking) output. Choose based on your field wiring: PNP for sourcing sensors and NPN-input PLCs (most modern Omron PLCs and most EU installations); NPN for sinking sensors and PNP-input PLCs (older US installations). Mechanically and electrically otherwise identical.
Can CP1L-EM40DT1-D connect to an NS-series HMI over Ethernet?
Yes — the built-in Ethernet port supports both FINS/UDP and FINS/TCP for connection to NS, NB, and NA series HMIs. For NB and NA HMIs, you can also use Modbus/TCP. Set the HMI's PLC type to CP1L-EM in CX-Designer / NB-Designer and configure the Ethernet node on the same subnet as the HMI.
How many expansion units can I add?
Up to 3 CP1W expansion units on the right side, for up to 160 I/O total. Expansion includes digital I/O (8/16/32 point), analog I/O (4/8 channels), temperature inputs (thermocouple or RTD), serial communication ports, and DeviceNet or CompoBus/S master/slave units. Order the CP1W unit to match the specific I/O you need — the catalog lists 50+ expansion options.
Does CP1L-EM40DT1-D support motion control?
Yes — for simple positioning, the 100 kHz pulse outputs (2 axes) drive stepper drivers or as position references to servo drives. For trapezoidal motion profiles, use the PLS2 instruction in the ladder program. For more complex motion (interpolated axes, electronic gearing), step up to a CP1H or NX102 with native motion controllers.
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