Sierra Monitor Corporation Modbus Communications Interface User manual

Brand: Sierra Monitor Corporation

Model: Modbus Communications Interface

Type: User manual

The Sentry Controller Modbus RTU Communica-

tions Interface enables Sentry to easily communi-

cate with PC based Distributed Control Systems

and graphic based human-machine interfaces and

via the FieldServer Technologies gateway to a wide

range of other protocols.

The Sentry system from Sierra Monitor offers comprehen-

sive, cost effective solutions to many specific gas man-

agement requirements. From a simple 4-point monitoring

system to a complete plant wide hazardous gas monitor-

ing system with hundreds of gas detection points, Sentry

meets the need.

With the Modbus communications interface Sentry can

easily interface with a PC-based Distributed Control Sys-

tem to provide a graphical display of hazardous gas condi-

tions in the plant. PC-based DCS software in conjunction

with Sentry provides the operator enhanced data acquisi-

tion, alarming and alarm management, historical trending,

distributed architecture, and integration into the plant’s dis-

tributed control system.

Sentry’s Modbus communication interface provides over

620 different parameters accessible by the PC-based DCS

software, including:

• gas concentration

• alarm setpoints

• sensor diagnostic messages

• historical reset time/date

• power up/down time/date

• trouble alarm time/date

• minimum/maximum values plus time/date

• high/low alarm latch/non-latched

• auto calibration enabled

• calibration status/coefficients

• calibration concentrations

• calibration due date

• zone option enabled

• operate mode

Using the optional FieldServer Technologies Gateway the

user can convert from the Modbus RTU output to a wide

variety of other protocols including DF1, DH+, Profibus,

Modbus TCP, ControlLogix and many more.

FieldServer Technologies is a division of Sierra Monitor Cor-

poration. More information on FieldServer products can be

found at www.fieldserver.com

Ordering Information

5387-50Modbus Communications Interface

4301-10Converter RS-232/RS-485, 9VDC

Sierra Monitor Corp. 1991 Tarob Ct., Milpitas, CA 95035, USA, 408-262-6611, 800-727-4377, FAX: 408-262-9042

Web Site: http://www.sierramonitor.com E-Mail: sales@sierramonitor.com

Sentry

Modbus Communications Interface

Sierra Monitor Corporation Modbus Communications Interface User manual

Sierra Monitor Corporation Modbus Communications Interface User manual

Sierra Monitor Corporation Modbus Communications Interface User manual

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