Is the CJ1G-CPU42H still in production?
No, it is listed as obsolete, but available for spares and repairs
1 actual photo shown first. Reference images are model-matched and must be confirmed before purchase.
Omron
CJ1G-CPU42H
CJ1G-CPU42H PLC CPU, DIN rail, 64K words memory
Omron
From $1,103.76In stockDiscontinued
Product Description
Omron’s CJ1G-CPU42H is a base CPU unit for CJ1-series PLC systems designed for industrial automation where modular expansion and DIN rail mounting are required. The CPU supports up to 30 modules across two racks, providing flexible I/O and function expansion while maintaining a compact footprint for panel installations. With 64K words of user memory, it accommodates substantial ladder logic programs and data areas for machine sequencing and process control. RS‑232C communication enables integration with host systems, HMIs, and peripheral devices; battery backup preserves data during power interruptions. The unit operates from 0°C to 55°C and includes ingress protection suitable for typical factory environments. Supplied as a single CPU module without a built-in display, it is configured and monitored using Omron engineering tools and can interface with external HMIs. The CJ1 platform’s reliability and lifecycle notes indicate the CJ1G-CPU42H is obsolete, but remains relevant for maintenance and retrofit of existing installations.
Key Features
- •CJ1-series modular CPU unit, DIN rail mounting for panels, 64K words program/data memory, Expansion up to 30 modules 2 racks, RS-232C communication interface, Battery backup for data retention, Operating temperature 0 to 55°C
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $1,398.16
Availability: 12 in stock
Lead time: ~10 day lead
Never Used
Price: $1,214.03
Availability: 4 in stock
Lead time: ~3 day lead
Used
Price: $1,103.76
Availability: 22 in stock
Lead time: ~3 day lead
FNFP
Price: RFQ
Availability: 1 in stock
Lead time: ~5 day lead
Specifications
- Series
- CJ1
- Model
- CJ1G-CPU42H
- Mounting
- DIN rail
- Memory size
- 64K words
- Expansion capacity
- Up to 30 modules, 2 racks max
- Communication
- RS-232C
- Display
- None
- Operating temperature
- 0°C to 55°C
- Ingress protection
- Yes
- Moisture sensitivity level
- MSL 1 (Unlimited)
- Part status
- Obsolete
- Packaging
- Bulk
- Manufacturer standard package
- 1
- Weight
- 5 kg (11 lb)
- HTSUS
- 8537.10.9160
- ECCN
- EAR99
- Part #
- CJ1G-CPU42H
- Category
- PLCs/Machine Control
- Category
- PLC Module/Rack
- Weight
- 0.37 lbs
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Independent sourcing disclaimer
We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
Need CJ1G-CPU42H availability?
Prices and stock can change. Submit quantity, required condition, and destination for a current quote.
FAQ
How much program memory does the CPU provide?
64K words for user program and data
What mounting method is supported?
DIN rail mounting for control panels
Does it have built-in communication?
Yes, RS-232C is supported for device interfacing
Can the system be expanded?
Yes, up to 30 modules across two racks