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Definition
3
No Communications
4
No Operational Firmware
5
No Hold Mode Selection
6
Invalid RS-232/423 Baud Rate
7
No I/O Configuration
8
Watchdog Timer Expired
Consult Siemens Technical
C
Support
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SIMATIC 505/500 PROFIBUS-DP RBC User Manual
Table 4 PROFIBUS-DP RBC Status Codes (continued)
Communications
to this RBC
The RBC detects no PROFIBUS-DP I/O
channel activity.
Action: Place the system in a safe state and
None
check the connection to the PROFIBUS-DP
I/O channel. Ensure that other
PROFIBUS-DP I/O channel devices are
powered and not reporting errors.
Firmware is missing.
None
Action: Download new firmware into Flash
Memory.
[505 RBC only] Jumper E1 is missing or
not recognized.
Action: Install jumper on header E1.
OK
Default: The RBC continues to operate with
a missing jumper; if communication is lost,
outputs will be driven to Off setting.
Improper dipswitch selection for RS-232
baud rate.
Action: Set the dipswitch to valid RS-232
OK
baud rate.
Default: The RBC continues to operate with
an improper dipswitch setting; it uses an
RS-232 baud rate of 9600.
PROFIBUS-DP master and RBC did not
complete I/O channel initialization.
Probable causes: The station address is
incorrect, or the I/O modules installed in
this base do not match the I/O configuration
Not Ready
expected by the PROFIBUS-DP master.
Action: Check for and if necessary select a
valid station address. Compare the actual
configuration of the base against the
configuration expected by the
PROFIBUS-DP master.
Hardware watchdog timeout that
immediately resets the RBC.
Action: Serious malfunction. Place the
None
system in a safe state and consult Siemens
Technical Support. (In the U.S.A., call
423–461–2522.)
Serious malfunction.
Action: Place the system in a safe state and
Not Ready
consult Siemens Technical Support. (In the
U.S.A., call 423–461–2522.)
No power to base, or serious malfunction.
Action: Check power to base. If base power is
None
OK, place the system in a safe state and
consult Siemens Technical Support. (In the
U.S.A., call 423–461–2522.)
Comment/Action
19
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