Omron CS1W-ETN21 operation manual Service Status Ethernet Unit to CPU Unit, FTP Status Bit

CIO Area Allocations Section 4-1

Service Status (Ethernet Unit to CPU Unit)

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

n+17

FTP Status

System Setup Format

Link Status

Accessing Memory,

Sending Mail

Accessing Memory,

Receiving Mail

Bit

Name

Status

Manipulated

Unit operation

Reference

by

0

FTP Status Flag

ON

Unit

FTP server operating. (FTP client

Operation Manual, Con-

connected.)

struction of Applica-

tions, SECTION 4

OFF

Unit

FTP server on standby. (FTP client

not connect.)

1

Accessing Memory,

ON

Unit

ON while CPU Unit memory is being

Operation Manual, Con-

Sending Mail

accessed to create a file to be

struction of Applica-

attached using the mail send func-

tions, SECTION 2

tion.

OFF

Unit

OFF when the file to be attached

has been created.

2

Accessing Memory,

ON

Unit

ON while CPU Unit memory is being

Operation Manual, Con-

Receiving Mail

accessed to store an attached file

struction of Applica-

using the mail receive function.

tions, SECTION 3

OFF

Unit

OFF when the attached file has

been stored.

3 to 7

(Not used.)

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8 to 11

System Setup For-

ON

Unit

Shows the current format in the CPU

SECTION 2 Installation

mat

Bus Unit System Setup Area by the

and Initial Setup

OFF

Unit

ON/OFF status of a combination of

bits.

12 to 13

(Not used.)

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14

Link Status

ON

Unit

ON while a link is established

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between hubs.

OFF

Unit

OFF when the link between hubs is

terminated.

15

(Not used.)

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FTP Status (Bit 0)

Turns ON while connected to an FTP client, and OFF while not connected. With the FTP server function only one FTP client can be connected at a time, so while this bit is ON no other clients can connect to the server.

The FTP status is also shown by the Ethernet Unit’s FTP indicator, as follows:

Not lit: FTP server on standby. (FTP status: OFF)

Lit: FTP server operating. (FTP status: ON)

Accessing Memory (Sending Mail) (Bit 1)

This bit turns ON while CPU Unit memory is being accessed to create a file to be attached using the mail send function, and it turns OFF when the file has been created.

ON while CPU Unit memory is being accessed to store an attached file using the mail receive function.

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