Mitsubishi Electric Melsec Q Series User Manual page 159

5
SETTINGS AND PROCEDURES BEFORE SYSTEM
OPERATION
(1) Indicator LEDs
LED
RUN
SD/RD
READY
RSP ERR.
TEST
TOKEN
PRM SET
FAULT
1
More than 1
Status
ON Normally operating
OFF Hardware error (watchdog timer error) or power failure
ON
Exchanging I/O data *
Flashing
OFF Not communicating with DP-Slave, or being in the standby system
ON Ready to communicate or communication being performed
OFF Not ready to communicate or no communication
ON A communication error has occurred.
OFF No communication error
ON Executing self-diagnostics or flash ROM initialization
Flashing Executing self-diagnostics
OFF Not executing self-diagnostics or flash ROM initialization
ON
Token being passed *
Flashing
OFF
No token passing, or being in the standby system *
ON Operating in Parameter setting mode (mode 1)
Flashing The written parameters are invalid
OFF Operating in operation mode other than Parameter setting mode (mode 1)
ON An error has occurred.
OFF Normally operating
* 1 The LED flashes at intervals based on the value set in "Data control time" in Master Parameters.
* 2 The LED flashes at the time of request or response in acyclic communication.
* 3 The LED status during token passing varies depending on the number of DP-Masters within the
same network and the transmission speed setting, as shown the Table 5.4.
No. of DP-Masters within the
Same Network
5.3 Part Names and Settings
Figure 5.4 Indicator LEDs
Table5.3 Indicator LEDs
Description
1
or during acyclic communication *
3
3
Table5.4 TOKEN LED Status
Transmission Speed
19.2kbps or less
Flashing
Reference
Section 9.1
Section 4.1.1
2
Section 4.2.1
Section 3.4.6
Section 5.4
Section 9.6
Section 5.4
Section 6.2
Section 9.1
Section 6.2
Section 9.1
93.75kbps or more
ON
ON or OFF
5
1
2
3
4
5
6
7
8
- 6