Configuration, 1 network design, Configuration -1 – Yokogawa Wireless Temperature Transmitter YTA510 User Manual

Page 14: Network design -1

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<5. Configuration>

5-1

IM 01C50T02-01E

5. Configuration

This chapter contains information on how to adapt

the function and performance of the YTA to suit

specific applications. Because two or more devices

are connected to Fieldbus, settings including the

requirements of all devices need to be determined.

Practically, the following steps must be taken.

(1) Network design

Determines the devices to be connected to

Fieldbus and checks the capacity of the power

supply.

(2) Network definition

Determines the tag and node addresses for all

devices.

(3) Definition of combining function blocks

Determines the method for combination

between each function block.

(4) Setting tags and addresses

Sets the PD Tag and node addresses one by

one for each device.

(5) Communication setting

Sets the link between communication

parameters and function blocks.

(6) Block setting

Sets the parameters for function blocks.

The following section describes each step of the

procedure in the order given. Using a dedicated

configuration tool allows the procedure to be

significantly simplified. This section describes the

procedure to be assigned for a host which has

relatively simple functions. Refer to Appendix 5

when the YTA is used as Link Master.

5.1 Network Design

Select the devices to be connected to the Fieldbus

network. The following instruments are necessary

for operation of Fieldbus.

• Power supply

Fieldbus requires a dedicated power supply. It

is recommended that current capacity be well

over the total value of the maximum current

consumed by all devices (including the host).

Conventional DC current cannot be used as is.

• Terminator

Fieldbus requires two terminators. Refer to

the supplier for details of terminators that are

attached to the host.

• Field devices

Connect the field devices necessary for

instrumentation. YTA has passed the

interoperability test conducted by The Fieldbus

Foundation. In order to properly start Fieldbus,

it is recommended that the devices used satisfy

the requirements of the above test.

• Host

Used for accessing field devices. A minimum of

one device with bus control function is needed.

• Cable

Used for connecting devices. Refer to

“Fieldbus Technical Information” for details

of instrumentation cabling. Provide a cable

sufficiently long to connect all devices. For

field branch cabling, use terminal boards or a

connection box as required.

First, check the capacity of the power supply. The

power supply capacity must be greater than the

sum of the maximum current consumed by all

devices to be connected to Fieldbus. The maximum

current consumed (power supply voltage 9 V to 32

V) for YTA is 16.6 mA. The cable must have the

spur in a minimum length with terminators installed

at both ends of the trunk.

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