EPISENSOR | MODBUS RS-485 ACCEPTANCE RECORD
Revision: 22 September 2026
Guide: https://episensor.com/knowledge-base/modbus-rs485-commissioning

One record for each RS-485 bus. Keep it with the site documents.
Keep credentials, passwords and access tokens out of this file.

1. MASTER AND SERIAL SETTINGS

Master or interface, model, serial and firmware: __________________________
Baud rate / data bits / parity / stop bits: _______________________________
Two-wire or four-wire: ___________________________________________________

2. TOPOLOGY

Trunk route and length (attach a sketch): _________________________________
Terminator positions (both ends only): ____________________________________
Bias source (one point only): ____________________________________________
Common conductor, shield and earthing: ____________________________________
Repeaters or isolators and their positions: _______________________________

3. DEVICES (one line per device)

Unit ID   Make / model            Firmware    Register map revision
_______   _____________________   _________   __________________________
_______   _____________________   _________   __________________________
_______   _____________________   _________   __________________________

4. POINT MAP CHECKS (one line per data type or device)

Unit ID   Point      FC   Offset   Type / order   Raw words     Decoded   Display
_______   ________   __   ______   ____________   ___________   _______   _______
_______   ________   __   ______   ____________   ___________   _______   _______
_______   ________   __   ______   ____________   ___________   _______   _______

5. TIMING

Polling cycle, calculated: _______________________________________________
Polling cycle, measured in normal operation: ______________________________
Slowest device response seen: ____________________________________________
Timeout and retry settings: ______________________________________________

6. FAILURE TESTS

One device disconnected: others still polled? (yes / no): __________________
Missing values marked stale? (yes / no): __________________________________
Master restart: counters and totals correct? (yes / no): ___________________
Write commands (if any): feedback and safe state tested? (yes / no / n/a): __

7. ACCEPTANCE

Accepted by: ____________________________  Date: _______________________
Open items and owners: ___________________________________________________
_________________________________________________________________________