Installation guide for the Fisher ROC827 Remote Operation Controller and ROC800 series expansion backplane, covering hardware, wiring, and setup.
The Fisher ROC827 Remote Operation Controller is a micro‑processor based controller designed for field automation, data logging, and flow measurement. It supports up to four ROC800 series expansion backplanes, providing a total of 27 I/O module slots when fully configured.
This manual provides detailed installation instructions, power‑input options, I/O module wiring, communication interface setup, troubleshooting, and calibration procedures. It also includes safety and grounding requirements for hazardous‑area installations.
| Base I/O module slots | 3 |
|---|---|
| Maximum I/O slots with expansion | 27 |
| Power input modules | 12 V DC (PM‑12) and 24 V DC (PM‑24) |
| Supported communication protocols | ROC Plus, Modbus, Modbus TCP/IP, TCP/IP encapsulated Modbus, EFM Modbus |
A fully configured ROC827 with four ROC800 expansion backplanes provides up to 27 I/O module slots.
The ROC827 can be powered with either a 12 V DC (PM‑12) or a 24 V DC (PM‑24) input module.
The controller is installed on a DIN rail using the mounting hardware described in section 2.4 of the manual.