Ver.1.02

CPU-CA20(FIT)GY

2

Physical Dimensions

System Configuration Image

This product is an I/O controller module for processing I/O signals from

connected device modules and transferring this data via a network to or

from a PC or other host device.

When connected to a device module, the I/O Controller Module forms

an I/O Controller Unit.

When used in conjunction with an I/O Assist Server Unit (SVR-

IOAx(FIT)GY), the I/O Controller Unit can collect data and perform

management functions, such as loading data onto the I/O Controller Unit

itself.

Multiple I/O controller units and I/O assist server units (a maximum of

eight units) can be installed on the same network. In this manner, when

connected to an I/O assist server unit, a host controller can input and

output signals to and from the devices that are connected to a

subordinate I/O controller unit.

Nomenclature

I/O Assist Server Unit:

The I/O Assist Server Unit supports the management function that

enables it to collect data from, and set data to, I/O controller units that

belong to the same group as the Group ID that is set by using the Group

ID switches of the SVR-IOAxx(FIT)GY ("Assist Server"), which is a CONTEC

product. Group IDs can be set in a range of 0 - 7.

By connecting local terminals and office terminals by means of a Web

browser, it is possible to monitor the status of the devices that are

connected to an I/O controller unit.

I/O Controller Unit:

The I/O Controller Unit is a general term that refers to any combination

of this product, the

CPU-CAxx(FIT)GY, with device modules.

Each device contains a Group ID SW and a Unit ID SW; these switches

must be set so that they are unique within the network. The I/O

Controller Unit transmits data collected from the devices to the I/O Assist

Server Unit that bears a specified Group ID.

The Group ID for a CPU-CA10(FIT)GY can be set in the range 0 - 8. The

Unit ID can be set in the range 0 - 7.

The Group ID for a CPU-CA20(FIT)GY can be set in the range 0 - 8 and A.

The Unit ID can be set in the range 0 - 7. If the Group ID is set to A, the

Unit ID can be set in the range 0 - 7Fh, permitting up to 128 devices.

Data cannot be sent to an I/O Assist Server if the Group ID is set to 8 or

A. Control of the I/O controller unit can be performed directly from a

terminal.

Further details on this topic may be found in the respective device

module manuals.

HUB:

This is a line concentration device that is used when a LAN is constructed

using twisted-pair cables.

The F&eIT series includes an 8-port switching HUB unit (SH-8008(FIT)H)

that is equipped with a DIN rail mounting mechanism.

F&eIT Protocol Specifications

The sudden spread of the Internet has resulted in networks springing up

in a wide range of fields. This, in turn, has resulted in the appearance of

many information devices that make use of this infrastructure. Yet, it is a

fact that interconnectivity - the greatest advantage of networks - is not

being used to its fullest. CONTEC sees networks as a prime part of the

system bus concept and has developed distributed monitor & control

networks that organically integrate various applications from corporate

offices through to field applications.

The following defines the common protocol layers that will be provided

in all products based upon the communications server concept. Such

products, complying with the communications server specifications, will

be able to access device information using the same protocol.

(1.2)

25.2

64.7

4.0

3.5

(1.2)

[mm]

5 V D

Vo+

Vo-

FG

CPU-CA20

RUN

Unit

ID

6

STATUS

Group

ID

C

ACT

LIN

RESET

(1.2)

25.2

64.7

4.0

3.5

(1.2)

[mm]

5 V D

Vo+

Vo-

FG

CPU-CA20

RUN

Unit

ID

6

STATUS

Group

ID

C

ACT

LIN

RESET

I/O Assist Server Unit

Local terminal

Office terminal

Internet

I/O Controller Unit

I/O Controller Unit

I/O Controller Unit

HUB

Router

Device

Device

Device

Device