Getting Started; Connection Of Devices - YOKOGAWA Admag TI Series User Manual

3.

Getting Started

Fieldbus fully adopts digital communication protocol and differs in operation from conventional 4
to 20 mA transmission protocol. It is recommended that those novice users who use field devices
for the first time should use the device in accordance with the procedures described in this
section. The procedures assume that field devices will be set up on a bench.
3.1

Connection of Devices

The following devices are required to use Fieldbus devices:
Power supply:
z „
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).
The conventional 4 -20 mA DC current cannot be used as is.
Terminator:
z „
Fieldbus requires two dedicated terminators. Refer to the supplier for details of terminators
that are attached to the host.
Field device:
z „
Connect the Fieldbus communication type product. This product or other devices can be
connected.
In order to smoothly start Fieldbus, please use the devices that has passed the
interoperability test of the Fieldbus Foundation.
Host:
z „
Used for accessing field devices. A dedicated host (such as DCS) is used for an
instrumentation line while dedicated communication tools are used for experimental
purposes. For the operation of the host, refer to the instruction manual for each host. No
other details on the host are given in this manual. At least one device with the bus control
function is necessary.
Cable:
z „
Used for connecting devices. Refer to "Fieldbus Technical Information" (TI 38K03A01-01E)
for details of instrumentation cabling. For laboratory or other experimental use, a twisted
pair cable two to three meters in length (a cross section 0.9mm
cycle period of within 5 cm (2 inches)) may be used. Termination processing depends on the
type of device being deployed. For this product, use an M4 screw terminal claw. Some hosts
require a connector.
Contact Yokogawa when making arrangements to purchase the recommended devices.
<3. Getting Started>
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