FIELDBUS COMMUNICATION Contents 1. Modbus RTU ................................................................................................................................ 3 2. PSE Modbus RTU Adaptor ......................................................................................................... 4 3. PSE Data ....................................................................................................................................... 5 3.1. Digital input telegram ................................................................................................................5 3.2.
Digital output telegram............................................................................................................. 6 3.3. Status word and Control word.................................................................................................. 7 3.3.1. Status word ................................................................................................................. 7 3.3.2. Control word .............................................................................................................. 8 3.4. Analog input telegram ............................................................................................................... 9 3.5.
Diagnostics .................................................................................................................................. 9 3.5.1. Diagnostic data ......................................................................................................... 9 3.5.2. Modbus diagnostic data ........................................................................................ 11 3.5.3. Device identification data ...................................................................................... 11 3.6. Parameters .................................................................................................................................. 12 3.6.1.
Configure baud rate ................................................................................................ 13 4. Modbus RTU - A set-up example ............................................................................................. 14 4.1. Softstarter PSE Built-in Modbus RTU communication ..................................................... 14 4.2. Settings ........................................................................................................................................ 14 4.3. Read digital input telegram ..................................................................................................... 15 4.4.
Write digital output telegram ................................................................................................. 16 4.5. Read analog input telegram .................................................................................................... 17 4.6. Read diagnostic data ................................................................................................................ 18 4.7. Write parameters ....................................................................................................................... 19 4.8. Read device identification ...................................................................................................... 20 5.
Troubleshooting ....................................................................................................................... 21 5.1. Modbus slave does not respond to requests ...................................................................... 21 5.2. PSE trips on fieldbus fault (EF40) .......................................................................................... 21 5.3. Motor does not start.................................................................................................................22 5.4. Parameter write does not work ..............................................................................................22 6.
Contact us ................................................................................................................................. 22 STATUS Approved PAGE 2/22 © Copyright 2019 ABB. All rights reserved. SECURITY LEVEL Public DOCUMENT ID. 1SFC132367M0201 REV. B LANG. en