Mitsubishi Electric MELSEC QS Series User Manual page 155

9
TROUBLESHOOTING
(c) H/W LED Information
The H/W LED Information area displays the following data link information.
If network parameters are not set, "0" is displayed for each of transmission speeds
"156K to 10M".
Item
1: Module is operating normally.
RUN
0: Watchdog timer error
1: All stations are faulty.
ERR.
Switching between 0 and 1: There is a faulty station.
MST 1: Set to the master station
M/S 1: A master station already exists on the same line.
PRM 1: There is an error in the parameter settings.
TIME 1: The data link monitoring timer was activated.
LINE 1: Cable is disconnected or the transmission path is affected by noise, etc.
156K 1: Transmission speed is set to 156 kbps.
625K 1: Transmission speed is set to 625 kbps.
2.5M 1: Transmission speed is set to 2.5 Mbps.
5M 1: Transmission speed is set to 5 Mbps.
10M 1: Transmission speed is set to 10 Mbps.
TEST 1: Hardware test is being executed
9.4 CC-Link Diagnostics Using GX Developer
Value
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