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Chapter 13: Troubleshooting
13-4 Error indicators on the display panel
If an error occurs while communicating with the module, the error details can be checked by reading
the error code on the display panel (LED display) of the module. Find the cause of the error by looking
up the error code that is displayed. Then take the appropriate countermeasures (resetting the param-
eters, etc.)
JW-20FL5/T
Z-336J
LN
TX
RX
12 V
PE
HE
S0 to S7
Error code of LED (S0 to S7)
S7 S6 S5 S4 S3 S2 S1 S0
O
O
O
O
O
O
O
O
O
O
13
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
: Light,
JW-20FL5
(JW-20FL5)
(JW-20FLT)
LED symbol
JW-50FL
LNK
Lit when communicating normally.
TX
Lit when sending data.
RX
Lit when receiving data.
12 VDC Lit when 12 VDC power is present. (This indicator cannot be used with JW-20FLT.)
T
TEST
Lights while in the test mode. (Is normally OFF.)
PER
Lights when the parameter settings are abnormal.
HER
Lights when the module has an error.
S0 to S7 Displays the node number when it is normal, and an error code when an error occurs.
LED name
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
: Light off
JW-50FL
LNK
TX
RX
DC12V
TEST
PER
HER
(JW-50FL)
Error
Error item
code
(H)
01
Node number
02
Token monitor time
Not available CU
04
(Only the JW-50FL.)
08
Area 1 address
09
Area 1 size
0A
Area 2 address
0B
Area 2 size
0E
Area 1 PC address
0F
Area 2 PC address
Doubled node
10
number
Doubled common
11
memory address
20
Range of area 1
21
Range of area 2
22
Range of each table
Rang e of the
23
transmission buffer.
13-6
S0
S1
S2
S3
S4
S0
S5
S1
S6
S2
S7
S3
S4
HE
S5
PE
S6
S7
T
12V
RX
TX
LN
(Z-336J)
Details
Cause (parameter setting status)
Node number is outside the range of 1
to 254.
The token monitor time is 0.
The host PC is a W70H/100H.
Area 1 is outside the allowed range.
Area 1 is larger than 8K bits.
Area 2 is outside the allowed range.
Area 2 is larger than 8K words.
The top address of area 1 is outside
the allowed range.
The top address of area 2 is outside
the allowed range.
The same node number was assigned
to more than one node.
This node's transmission area 1 (or
2) is used by another node.
*
When the JW20H and J-board (Z-300
series) is used for a PC, any area is set
for file 1 though there is no file 1.
* Related to the cyclic transfer
*
*
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