Technical data

Manual – MOVI-PLC® advanced DH.41B Controller
81
7
Diagnostic procedure for PROFIBUS-DP
Error Diagnostics
7.2 Diagnostic procedure for PROFIBUS-DP
Diagnostic problem: The MOVI-PLC
®
advanced DHF41B control card
does not work on PROFIBUS.
Initial status:
• The MOVI-PLC
®
advanced DHF41B control card is connected
physically to PROFIBUS.
• The MOVI-PLC
®
advanced DHF41B control card is configured in the
DP master and bus communication is active.
↓
Is the bus connector plugged in? No → [A]
Yes
↓
Response of the Profibus fault LED?
OFF →
[B]
ON →
[C]
FLASHES
↓
The MOVI-PLC
®
advanced DHF41B control card detects the baud rate, but
was either not configured in the DP Master or has been configured
incorrectly.
↓
Check whether the configured PROFIBUS address is the same as the
address set on the DIP switches.
↓
PROFIBUS addresses identical? No → [D]
Yes
↓
You may have configured an incorrect unit type or defined the configuration
incorrectly.
↓
Delete the configuration for the MOVI-PLC
®
advanced DHF41B control
card from the DP network.
↓
Reconfigure the MOVI-PLC
®
advanced DHF41B control card and select
the unit designation "MOVI-PLC".
Use a predefined configuration to simplify the process. Do not change any
of the preset configuration data!
Assign the address range for your control system.
↓
Load the configuration into the DP master and start the bus communication
again.
[A] Check the bus cabling.
[B] The MOVI-PLC
®
advanced DHF41B control card is exchanging data
cyclically with the DP master.
[C] The MOVI-PLC
®
advanced DHF41B control card cannot detect the baud
rate.
Check the bus cabling.
[D] Adapt the bus addresses.