8-4 Error and treatment

Operation status of the JW-20CM can be check by indication lamps, flags, or system memory.

(1)Indication lamp JW-20CM

JW–20CM

C O M M

S 0

S D

S 1

R D

S 2

C D

S 3

L T

S 4

T E S T

S 5

E R R O R

S 6

F A U L T

S 7

Indication lamp

8

Name

Operation

Recovery

 

 

 

COMM

Lights while the remote I/O is operating

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SD

Flickers while sending data

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RD

Flickers while receiving data

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CD

Flickers while detecting a carrier

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LT

Lights when the termination resistance

 

switches turned ON

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TEST

Lights while testing

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· Check disconnection of communication cable

ERROR

Lights while an error is detected (Indicate

· Check settings of switches

error code by S0 to S7 LEDs)

· Check settings of parameter

 

 

 

· Check power supply voltage.

 

 

 

FAULT

Lights when the watchdog timer is time

Replace the JW-20CM

up (JW-20CM is faulty)

 

 

 

 

 

S0 to S7

Indicates error codes by hexadecimal

See the next page

when an error is occurred

 

 

 

 

 

8·46