EN 30/06/2019 5.1 x-Messenger Block Addition 19/08/2019 5.2 Addition of Analogue Table, Free Protocol, General Data Latching Relay and General Arithmetic blocks 07/09/2019 5.3 Added Modbus Read Write block 08/11/2019 5.4 Updated new MQTT Methods 13/01/2020 5.5 Added SMS Usage Examples and Error Codes 28/05/2020 5.6 Added PR-23 Series, new digital expansions and some minor amendments 15/06/2020 5.7 Corrected Analogue Input expansion Modbus addressing 13/08/2020 5.8 Added new Out 2 status codes for Connect to MQTT Server block 19/10/2020 5.9 Added new Modbus addresses for 16-way expansion IO 21/10/2020 6.0 Added Wi-Fi Communication Instructions for Wi-FI CPU’s Programmable Relay ● User Manual for ELC, EXM and PR Series 4 2020 v6.0 ● © Rievtech Co., Ltd.