MODEL: R7G

R7G SPECIFICATIONS

ES-7817 Rev.3 Page 4/6

http://www.m-system.co.jp/

INDICATOR LED

RUNx

ERRx

SDx*

1

RDx

STATUS*

2

ON

BL

BL

ON

Communicates normally with occasional CRC errors due to noise interference.

ON

BL

BL

ON

Communicates normally but the Baud Rate and/or Station Address switches failed.

ERRx LED blinks approximately in 0.5 seconds intervals.

ON

BL

BL

OFF

----

ON

BL

OFF

ON

CRC error found in the received data. Unable to respond.

ON

BL

OFF

OFF

----

ON

OFF

BL

ON

Normal communication

ON

OFF

BL

OFF

----

ON

OFF

OFF

ON

Unable to receive data addressed to the station.

ON

OFF

OFF

OFF

----

OFF

BL

BL

ON

Performs the interval-timed responses but CRC error found in receiving the refresh data.

OFF

BL

BL

OFF

----

OFF

BL

OFF

ON

CRC error found in the data addressed to the station.

OFF

BL

OFF

OFF

----

OFF

OFF

BL

ON

Link is not started.

OFF

OFF

BL

OFF

----

OFF

OFF

OFF

ON

No data addressed to the station. Or unable to receive data addressed to the station

due to noise interference. (Missing parts of the data sent from the master)

OFF

OFF

OFF

OFF

Unable to receive data due to wire breakdown

OFF

ON

OFF

OFF/ON

Faulty Baud Rate and/or Station Address setting

OFF

OFF

OFF

OFF

Power input removed. Or power supply failure.

OFF = OFF, ON = ON, BL = Blinking

*1. SDx LEDs may look not blinking but ON with high baud rate and fewer connected modules.

*2. LEDs indicated with “----” in STATUS rarely occurs in normal operation. (LED failure or the like as possible cause).

■ CC-Link STATUS INDICATOR LED

DATA ALLOCATION

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

RX(n+1)

RX(n+0)

CH1

CH2

CH1

CH2

RX(n+2)

RX(n+3)

Interval-timed Response(X)

CC-Link

Do

HLS

Unused

Unused

{(80+2m) +1}H

{(80+2m) +0}H

{(80+2m) +3}H

{(80+2m) +2}H

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

RY(n+1)

RY(n+0)

n: CC-Link station address selected with rotary SW.

m: HLS module address selected with rotary SW.

CH1

CH2

CH1

CH2

RY(n+2)

RY(n+3)

Refresh Data(Y)

Di

Unused

Unused

{(100+2m) +1}H

{(100+2m) +0}H

{(100+2m) +3}H

{(100+2m) +2}H