EN ELC, EXM and PR-Series Expansion Unit Naming Convention Figure 6 – PR-E or EXM-E Expansion Unit Naming Convention 1. Series name – PR or EXM. 2. Indicates Expansion module. 3. Type of input and output points 4. A number – Total number of inputs and outputs a. AI – Analogue input only b. AQ – Analogue output only c. PT100 – Temperature input only PT100 d. RS485 – Isolated RS485 communication 5. Voltage Supply: a. AC b. DC 6. Types of Inputs: a. D – Digital only b. DA – Digital and Analogue 7. Type of Outputs: a. R – Relay b. TN – Transistor PNP Programmable Relay ● User Manual for ELC, EXM and PR Series 23 2020 v6.0 ● © Rievtech Co.,