Configured for multi-channel analog signal processing in CJ Series PLC backplane architectures, the Omron CJ1W-MAD42 (CJ1W-MAD42 Analog I/O Unit) provides direct physical/electrical execution.

Signal Architecture & Channel Mapping

• I/O Capacity: Combines 4 analog inputs and 2 analog outputs within a single-slot module width.
• Signal Ranges: Configurable per channel for 1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to 10 V, and 4 to 20 mA.
• Conversion Parameters: Operates with a standard resolution of 1/4,000 (configurable to 1/8,000) and a conversion speed of 1 ms/point (configurable to 500 us/point).

Technical Specifications

Deterministic Backplane Communications

Analog signal conversion maps directly to internal CPU memory through backplane bus communication velocity Licences without scan latency bottlenecks. Fast execution enables real-time updates across all configured channels during active control cycles. Stable memory mapping and firmware flash compatibility ensure continuous conversion stability across various CJ Series rack configurations.

Standard Package Contents

• 1 x Omron CJ1W-MAD42 Analog I/O Module
• 1 x Removable Terminal Block Assembly
• 1 x Hardware Instruction Sheet

Wiring & Installation Instructions

• Slot Placement: Slide the module into the target CJ Series CPU or expansion rack slot until upper and lower latches lock into position.
• Terminal Wiring: Secure field wires using twisted-pair shielded cables to prevent signal noise on low-voltage analog inputs and current outputs.
• Shield Grounding: Connect cable shielding to a dedicated functional earth (100 ohm max resistance) at the module end only to prevent ground loops.
• Range Selection: Set input/output DIP switches and CPU memory allocation words to match field instrument signal ranges prior to powering the unit.

Technical Questions & Answers

• What analog voltage and current ranges can be set on individual channels?

  Each input and output channel independently supports ranges of 1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to 10 V, and 4 to 20 mA.

• What are the selectable resolution modes for analog-to-digital conversion?

  The default resolution is 1/4,000 of full scale, which can be configured through system software settings to 1/8,000 high-resolution mode.

• What is the signal conversion rate per channel on this unit?

  Standard conversion time is 1 ms per point, which can be accelerated down to 500 us per point by modifying memory configuration settings.

• How many unit numbers does this analog module allocate on the system rack?

  The module occupies 1 unit number within the Special I/O Unit address space on the host CPU controller backplane.

• What amount of current does the module draw from the 5 VDC logic bus?

  The hardware consumes 0.58 A (580 mA) from the internal 5 VDC system backplane power rail during standard operational states.

• Can the terminal block be removed without disconnecting individual field wires?

  Yes, the front terminal block is fully removable, permitting module replacement without disturbing existing wiring runs.

• Is hot-swapping permitted for this module during active PLC scan cycles?

  No, system backplane power must be isolated prior to removing or inserting the unit to avoid communication errors and hardware damage.

• What type of cabling is required to maintain conversion accuracy?

  Twisted-pair shielded cables must be utilized for all analog signals to prevent electrical noise interference from affecting accuracy.