ROC827 Instruction Manual

Chapter 2 Installation and Use

Chapter 3

Power Connections

Chapter 4

Input/Output (I/O)

Modules

Chapter 5

Communications

Chapter 6

Troubleshooting

Chapter 7

Calibration

Provides information on installation, tools, wiring, mounting the ROC827, and other essential elements of the ROC827 and EXPs.

Provides information on the Power Input modules available for the ROC827 and EXPs and provides worksheets to help determine power requirements for the ROC827 configurations.

Provides information for the Input/Output (I/O) modules available for the ROC827 and EXPs.

Provides information for the built-in communications and the optional communication modules available for the ROC827.

Provides information on diagnosing and correcting problems for the ROC827.

Provides information for calibrating Analog Inputs, HART Inputs, RTD Inputs, and MVS Inputs for the ROC827.

Glossary

Provides definitions of acronyms and terms.

Index

Provides an alphabetic listing of items and topics

 

contained in this manual.

1.2Hardware

The ROC827 is highly innovative and versatile with an integrated backplane to which the central processor unit (CPU), Power Input module, communication modules, and I/O modules connect. The ROC827 has three I/O module slots.

The ROC800-Series expanded backplane (EXP) attaches to the ROC827. Each EXP provides six additional I/O module slots. The ROC827 can support up to four EXPs, for a total of 27 I/O module slots in a fully configured ROC827 (six slots per EXP plus the three I/O slots on the ROC827 itself).

The ROC827 uses a Power Input module to convert external input power to the voltage levels required by the ROC827’s electronics and to monitor voltage levels to ensure proper operation. Two Power Input modules—12 Volts dc (PM-12) and 24 Volts dc (PM-24)—are available for the ROC827. For more information on the Power Input modules, refer to Chapter 3, Power Connections.

The ROC827 supports a variety of communication protocols: ROC Plus, Modbus, Modbus TCP/IP, Modbus encapsulated in TCP/IP, and Modbus with Electronic Flow Measurement (EFM) extensions.

Figure 1-1 shows the housing, typical I/O modules, and communication modules installed in a ROC827. The patented ABS (Acrylonitrile Butadiene Styrene) plastic housing has wire covers to protect the wiring terminals. The housing includes DIN rail mounts for mounting the ROC827 on a panel or in a user-supplied enclosure.

Issued Mar-06

General Information

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Emerson ROC827 instruction manual Hardware, Issued Mar-06 General Information