These temperature sensor units are classified as digital I/O units when considering I/O allocations, and will take digital I/O points from the total allocation for a CJ1M CPU. The number of I/O points is DIP switch selectable as follows: Configured for 1 to 3 inputs takes 48 digital I/O points, configured for 4 inputs takes 64 digital I/O points, and configured for 5 to 6 inputs takes 96 digital I/O points.

Omron CJ1M Digital and Analogue I/O Modules

CJ1 Digital I/O, Analogue I/O, and Communication modules clip together to the right of the CPU in any combination up to a maximum of 10 modules. A further 10 modules can be connected to a CJ1M-CPU13 or CJ1M-CPU23 based system as part of an expansion assembly.

Dimensions: Height 90mm, Width 31mm, Depth 89mm
All modules have removable screw terminal blocks for I/O connections, except screwless (SL)