Omron 3G3AX-MX2-PRT-E User Manual page 74

Troubleshooting using the LED indicators
5-1-4 PROFIBUS Errors
Table 81 PROFIBUS Errors
MX2 RX
Display & Display &
Indicators Indicators
60
If the PROFIBUS master is correctly configured and there are no wiring
errors, the COMM indicator will be ON and the BF indicator OFF. The table
below shows the indicator patterns caused by configuration PROFIBUS
errors.
Possible Cause(s)
The PROFIBUS master cannot communi-
cate with the Option Board because the
PROFIBUS configuration is not correct.
The PROFIBUS wiring is not correct.
The PROFIBUS network has not been
terminated correctly.
The Option Board detected too many
communication errors.
Corrective Action
Check (and correct) the following items:
• Does the node address in your PROFI-
BUS master configuration program match
P180?
• Does any other slave device on the PRO-
FIBUS network also have the same node
address?
• Is the PROFIBUS master ON-LINE?
• If you are using OMRON CX-Configurator:
Make sure that the 'Enable DPV1 option'
on the 'DPV1' tab is NOT checked.
Check (and correct) the following items:
• Are the correct pins wired on the PROFI-
BUS connector?
• Are there any short circuits or line interrup-
tions?
• Are you using the correct cable type?
• If you have branches from the PROFIBUS
cable main line: Are any of these branches
too long?
Follow the instruction provided in the PROFI-
BUS Installation Guideline for Cabling and
Assembly to correctly terminate the network.
Check (and correct) the following items:
• Is the ground cable of the Option Board
connected to a ground terminal on the
Inverter?
Are the MX2 installation guide-
lines to comply with EMC recom-
mendations properly
implemented (refer to MX2 User's
manual section D-1)?
Are the RX installation guidelines
to comply with EMC recommen-
dations properly implemented
(refer to RX User's manual sec-
tion "2-1 Installation")?)
• Are there any excessive EMI sources near
any of the cables or equipment?
Section 5-1