CJ2H-CPU65-EIP

What type of automation component is this?

This is a CPU module for Omron CJ-Series programmable controllers. It is designed to act as the main processing unit in a modular PLC system, handling logic execution, memory management and communications for connected I/O and networked devices.

What systems is this CPU module intended to work with?

It is intended for use within the Omron CJ-Series platform and is designed to work with a wide range of compatible CJ1 family I/O units, communication units and expansion hardware. This makes it suitable for both upgrades to existing CJ-based systems and new modular PLC assemblies.

Does this unit have built-in Ethernet communications?

Yes. The unit includes a built-in EtherNet/IP port, which is one of its key features. It is intended for high-speed industrial networking and can also be used for wider Ethernet-based communications within a control system.

What communication ports are available on this CPU?

This model includes three main communication interfaces: a built-in EtherNet/IP port, an RS-232C serial port and a USB port. That combination gives flexibility for machine integration, network connectivity and local access.

What is the programme capacity of this CPU unit?

The programme capacity is 100K steps. In practical terms, this gives the controller enough space for medium to more demanding machine control tasks where a higher-capacity CJ2H processor is required.

How much memory does the unit provide?

The unit provides 160K words of data memory. It also includes DM memory and EM memory structure associated with the CJ2H platform, making it suitable for applications that require substantial data handling alongside control tasks.

How fast is the instruction execution?

The logic execution time is rated at 0.016 microseconds for basic instructions, with an overhead processing time of 200 microseconds in normal mode. This gives the unit strong performance for high-speed machine control applications.

How many I/O points can this controller handle?

This CPU can support up to 2,560 local I/O points, making it a strong option for larger modular control systems where a substantial amount of field I/O is required.

How many expansion units can be connected?

The unit can support up to 40 connected units in total, with up to 3 expansion racks. This allows the controller to scale well for larger panel-based automation systems.

Does the CPU include any built-in digital I/O?

No. This CPU module does not include built-in digital I/O points. It is intended to be used as part of a modular CJ-Series system, where separate I/O units are added as needed.

What is the power requirement for the module?

The CPU is rated at 5 V DC and has a current consumption of approximately 0.82 A. It draws power through the rack system rather than through a separate direct field connection on the front of the module.

What are the physical dimensions of the unit?

The unit measures approximately 90 mm high, 79.8 mm wide and 74.5 mm deep, with a weight of around 280 g. These dimensions make it suitable for compact but capable panel-mounted CJ-Series assemblies.

What operating environment is this module designed for?

It is designed for panel installation in industrial environments, with an operating temperature range of 0 to 55°C and operating humidity of 10% to 90% non-condensing. The atmosphere should be free from corrosive gases.

Can this unit be used in applications that need EtherNet/IP data exchange?

Yes. One of the main advantages of the CJ2H-CPU65-EIP is its built-in EtherNet/IP capability, which supports tag data links and network communications across compatible industrial devices. This makes it a strong choice for integrated machinery and networked production equipment.

Is a battery used with this CPU?

Yes. The unit uses a CJ1W-BAT01 battery, which is included as an accessory with the CPU unit. The stated battery life is approximately 5 years at 25°C.

What accessories are commonly used with this module?

Common accessories include CJ-Series power supply units, expansion control and interface units, memory cards, USB programming cables, RS-422/485 conversion adapters and rack connection cables. Selection depends on how the final PLC system is being configured.

Is this a suitable choice for larger CJ-Series control systems?

Yes. With 100K steps of programme capacity, 160K words of data memory, built-in EtherNet/IP, support for up to 2,560 I/O points and up to 40 units, this CPU is well suited to larger or more communications-focused CJ-Series installations.

What makes this model different from a standard non-Ethernet CJ2H CPU?

The main difference is the integrated EtherNet/IP port. Compared with non-EIP variants, this version is better suited where built-in Ethernet networking is needed without adding a separate communication unit, helping to simplify the overall rack configuration.