5
PREPARATION AND SETUP
5.3 Part Names
5
- 5
1
O
V
ER
VI
E
W
2
SYST
EM
CO
NF
IG
URA
T
IO
N
3
SPECI
F
IC
A
T
IO
N
S
4
F
UNCT
IONS
5
PREP
ARA
T
IO
N AND
SET
UP
6
P
A
RAM
E
T
E
R
SET
TI
NG
7
PRO
C
ESSI
NG
T
IM
E
8
PRO
G
R
AM
M
ING
(1) Indicator LEDs
* 1 When the CPU module is reset, the LEDs other than the EXT.PW LED turn OFF.
Figure 5.3 Indicator LEDs
Table 5.3 LED indication
Name
LED status
*1
Description
RUN
ON, green
Operating normally
OFF
Hardware fault or watchdog timer error
MODE
ON, green
Online mode
Flashing, green
Test mode
OFF
Offline mode
PRM
ON, green
Operating as a Control station
OFF
Operating as a Normal station
D LINK
ON, green
Data link in operation (Cyclic transmission operated)
Flashing, green
Data link in operation (Cyclic transmission stopped)
OFF
Data link not in operation (Disconnected from network)
ERR.
ON, red
• Received data are erroneous.(Receive frame error)
• A frame error above a certain level has occurred between
stations.
• The Control station or a station number is duplicated.
• Cable disconnection, or incorrect cable connection between OUT
and IN
• Network parameters are corrupted, or some settings (Reserved
station specification, Total number of stations, Network No, etc.)
are inconsistent between the Control and Normal stations.
OFF
Normal status
SD
ON, green
Sending data
OFF
Not sending data
RD
ON, green
Receiving data
OFF
Not receiving data
1 100
1,2,4,8 10
1,2,4,8 1
ON, green (Numeric
display)
The station No. is set. (
(2) in this section)
OFF
No station No. is set.
EXT.PW
ON, green
External power supplied (Own station power status (SB0042) is
ON.)
OFF
External power not supplied (Own station power status (SB0042) is
OFF.)
RUN
MODE
SD
ERR.
PRM
D LINK
RD
1
10
100
X
S
T.
N
O.
Q J 7 1 G P 2 1 - S X
1
2
4
8
1
1
2
4
8
EXT.PW
Q J 7 1 G P 2 1 S - S X
RUN
MODE
SD
ERR.
PRM
D LINK
RD
1
10
100
X
S
T.
N
O.
1
2
4
8
1
1
2
4
8
QJ71GP21S-SX
QJ71GP21-SX
Summary of Contents for QJ71GP21-SX
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