7.3. Status check by BD52x LED
7.3. Status check by BD52x LED
6 LEDs for each channel are mounted on BD52x. Each of the 4 LEDs on the left side has a different role according to fieldbus protocol.
However, the meanings of the 2 LEDs on the right side are as given in [Table 7-3], regardless of protocol.
Table 7‑3 Common LED status and meaning
Name | Color | Status | Meaning |
RDY | Yellow | Turned on | Ready |
Blinking | Bootstrap loader active | ||
Turned off | Hardware or system error | ||
RUN | Green | Turned on | Communication is on |
Blinking | Parameter error | ||
Turned off | Communication stop |
[Figure 7.1] to [Figure 7.3] and [Table 7-3] to [Table 7-6] provide LED name and the explanation of each fieldbus protocol.
Figure 7.8 LED of DeviceNet master and slave module
Table 7‑4 LED status and the meaning of DeviceNet master and slave module
Name | Color | Status | Meaning |
NET | Green | Turned on | Online, connected |
Blinking | Online, not connected | ||
Turned off | Refer to NETERR | ||
NETERR | Red | Turned on | Critical link failure |
Blinking | Connection timeout | ||
Turned off | Refer to NET | ||
MOD | Green | Turned on | Normal operation |
Blinking | Setting failure | ||
Turned off | Refer to MODERR | ||
MODERR | Red | Turned on | Irrecoverable error |
Blinking | Insignificant error | ||
Turned off | Refer to MOD |
※ If NET and NETERR are turned off, it may indicate a problem with the DeviceNet power (24V) supply.
Figure 7.9 LED of Profibus-DP master, slave and Interbus master module
Table 7‑5 LED status and the meaning of Profibus-DP master, slave and Interbus master module
Name | Color | Status | Meaning |
STA | Yellow | Turned on | DP master: Hold token DP slave: Data exchange Interbus: Data telegrams active |
Turned off | Master: No hold token Slave: No data exchange Interbus: No data telegrams active | ||
Turned on | Error on the communication line | ||
MODERR | Red | Turned off | No error on the communication line |
Figure 7.10 LED of Interbus slave module
Table 7‑6 LED status and the meaning of Interbus slave module
Name | Color | Status | Meaning |
RC | Green | Turned on | Remote bus cable check OK |
Turned off | No connection with previous slave | ||
BA | Green | Turned on | Data message alive |
Turned off | Data message dead | ||
TR | Green | Turned on | PCP data transfer |
Turned off | No PCP data transfer |
