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Emerson 644 Reference Manual , Link Active Scheduler , Block Installation

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Reference Manual

00809-0400-4728, Rev AA

June 2011

3-3

Rosemount 644

NOTE

When an upstream block is set to OOS, this will impact the output status of all

downstream blocks. The figure below depicts the hierarchy of blocks:

Link Active Scheduler The 644 can be designated to act as the backup Link Active Scheduler (LAS)

in the event that the designated LAS is disconnected from the segment. As

the backup LAS, the 644 will take over the management of communications

until the host is restored.

The host system may provide a configuration tool specifically designed to

designate a particular device as a backup LAS. Otherwise, this can be

configured manually as follows:

1. Access the Management Information Base (MIB) for the 644.

To activate the LAS capability, write 0x02 to the

BOOT_OPERAT_FUNCTIONAL_CLASS object (Index 605). To

deactivate, write 0x01.

2. Restart the device.

Block Installation Rosemount devices are pre-configured with function blocks at the factory, the

default permanent configuration for the 644 is listed below. The 644 can have

up to ten additional instantiated function blocks.

• 2 Analog Input Blocks (tag names AI 1300, AI 1400)

• 1 Proportional/Integral/Derivative Block (tag name PID 1500)

The 644 supports the use of Function Block Instantiation. When a device

supports block instantiation, the number of blocks and block types can be

defined to match specific application needs.The number of blocks that can be

instantiated is only limited by the amount of memory within the device and the

block types that are supported by the device. Instantiation does not apply to

standard device blocks like the Resource, Sensor Transducer, LCD

Transducer, and Advanced Diagnostics Blocks.

By reading the parameter “FREE_SPACE” in the Resource block you can

determine how many blocks you can instantiate. Each block that you

instantiate takes up 4.5% of the “FREE_SPACE.”

Block instantiation is done by the host control system or configuration tool, but

not all hosts are required to implement this functionality. Please refer to your

specific host or configuration tool manual for more information.

Resource

Block

Transducer

Block

Analog Input

(AI Block)

Other

Function

Blocks

Contents

Main Page Table of Contents SECTION 1 Introduction SECTION 2 Installation SECTION 3 Configuration Rosemount 644 June 2011 Rosemount 644 Rosemount 644 Temperature Transmitters NOTICE Page Section 1 Introduction OVERVIEW Manual Transmitter Reference Manual CONSIDERATIONS General Commissioning Mechanical Electrical RETURN OF MATERIALS PRODUCT RECYCLING/DISPOSAL Section 2 Installation Figure 2-1. Installation Flowchart Reference Manual MOUNTING INSTALLATION Typical European Installation Reference Manual Typical North American Installation LCD Display Installation Reference Manual WIRING Sensor Connections Page June 2011 Lead wire imbalance seen by the transmitter = 0.5 Reference Manual POWER SUPPLY Ground the Transmitter Page Reference Manual Section 3 Configuration OVERVIEW SAFETY MESSAGES GENERAL BLOCK INFORMATION Device Description Node Address Modes Reference Manual Link Active Scheduler Block Installation Capabilities FOUNDATION FIELDBUS FUNCTION BLOCKS Reference Manual Resource Block Page Page Page Reference Manual Sensor Transducer Block Analog Input (AI) Function Block Page Page Page Page LCD Transducer Block Reference Manual OPERATION AND MAINTENANCE Overview Troubleshooting Guides Figure 3-1. 644 troubleshooting flowchart PROBLEMS WITH COMMUNICATIONS Table 3-2. Troubleshooting guide. Figure 3-2. Problems with communications flowchart COMMUNICATIONS ESTABLISHED BUT HAVE BLOCK_ERR OR AN ALARM CONDITION. Sensor Transducer Block Page Table 3-5. Sensor Transducer Block STB.SENSOR_ DETAILED_ STA TUS messages Reference Manual Analog Input (AI) Function Block Rosemount 644 Table 3-6. AI BLOCK_ERR Conditions. Table 3-7. Troubleshooting the AI block Reference Manual Resource Block Reference Manual LCD Transducer block Reference Manual Appendix A Specifications and Reference Data SPECIFICATIONS Functional Physical Reference Manual Performance FOUNDATION FIELDBUS SPECIFICATIONS Page Accuracy Table A-1. Rosemount 644 Input Options and Accuracy Ambient Temperature Effect Table A-2. Ambient Temperature Effect Page Reference Manual DIMENSIONAL DRAWINGS 644H (DIN A Head Mount) Threaded-Sensor Universal Head (Option code J5 or J6) Integral DIN Style Sensor Connection Head LCD Display Mounting Reference Manual Sanitary Housing Covers ORDERING INFORMATION Options Page Tagg in g Software Considerations Reference Manual External Ground Screw Assembly Configuration TABLE 1. Transmitter Accessories Final Station AI Blocks are scheduled for 1 second. AI Blocks are linked as shown above. Appendix B Product Certifications Rosemount 644 Reference Manual European Certifications IECEx Certifications Page Japanese Certifications Combination Approvals Russian GOST Certifications Kazakhstan GOST Ukraine GOST Reference Manual INSTALLATION DRAWINGS Page Page Page Page Page Page Page Page Page Page Page Appendix C FOUNDATION fieldbus Block Information BASIC SETUP RESOURCE BLOCK Parameters and Descriptions including the descriptions and index numbers for each. Page Page SENSOR TRANSDUCER BLOCK Parameters and Descriptions Page Page ANALOG INPUT (AI) FUNCTION BLOCK C-9 AI Parameter Table Table C-3. Definitions of Analog Input Function Block System Parameters C-10 LCD TRANSDUCER BLOCK Table C-4. LCD Transducer Block Parameters and Descriptions PID BLOCK Table C-5. PID Block Parameters and Descriptions Index