08/2005 Overview of Alarms
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© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Definitions: An access conflict occurred on the PROFIBUS DP in cyclic mode: The NCK attempted to
write data to the bus or to read from the bus while cyclic data transfer was active. This can
lead to data integrity problems.
Type 1: Cyclic transfer has not finished on the PROFIBUS when the NCK attempts to
read data.
Type 2: The NCK has not finished writing data when cyclic transfer begins again. Counter
%2 contains a serial number starting at 1. A maximum of 10 alarms are output in succes-
sion. If no conflicts occur in a DP cycle, the counter is reset and new alarms are output
again on the next conflict.
Reactions: - Alarm display.
Remedy: • Check the timing again, in particular ensure that the settings in
SYSCLOCK_CYCLE_TIME and POSCTRL_CYCLE_DELAY are correct:
POSCTRL_CYCLE_DELAY must be larger for type 1. POSCTRL_CYCLE_DELAY must
be smaller for type 2.
• If alarm-free operation cannot be achieved with any POSCTRL_CYCLE_DELAY setting,
SYSCLOCK_CYCLE_TIME must be increased.
• If the error cannot be eliminated by this procedure, please make a note of the error text
and contact the control system manufacturer.
Program Con-
tinuation:
Clear alarm with the Delete key or NC START.
380020 PROFIBUS DP: bus %3 SDB1000 error %1 for SDB source %2
Parameters: %1 = Cause of the error
%2 = SDB1000 source
%3 = Number of the affected bus
Definitions: Error in SDB1000 for PROFIBUS DP configuration.
Error cause:
• 01 = SDB1000 does not exist in SDB1000 source.
• 02 = SDB1000 in SDB1000 source too large.
• 03 = SDB1000 in SDB1000 source cannot be activated.
SDB1000 source:
• 00 = Default SDB (selected by MD 11240 = 0 if no user SDB1000 is loaded on the con-
trol system)
• 01 = Standard SDB1 (selected by MD 11240 = 1)
• 02 = Standard SDB2 (selected by MD 11240 = 2)
• .....
• 100 = SDB1000 stored in battery-backed memory (SRAM)
• 101 = User SDB1000 stored in file system
• 102 = SDB1000 reloaded in SRAM on startup
Reaction: PROFIBUS DP is inactive or operating in accordance with default SDB1000.
Reactions: - Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
Remedy: • Check MD 11240.
• If SDB1000 source = 100: Reload user SDB1000 in passive file system
/_N_IBN_DIR/_N_SDB1000_BIN.
• If SDB1000 source = 101: Check backup batteries.
• If SDB1000 source = 102: Follow the procedure described for troubleshooting alarm 380
001.
• If alarm 380 021 is also signaled, please follow the instructions provided for this alarm.
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