Siemens SINUMERIK 840D Series Diagnostics Manual page 507

11.02
Definitions:
Reactions:
Remedy:
Program Continuation:
300745
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300746
Parameters:
Definitions:
Reactions:
Remedy:
 Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
The actual checksum of the safety-relevant MDs calculated by the drive and stored in MD
1398: $MD_SAFE_ACT_CHECKSUM (display of the checksum of the machine data for
safe functions) has another value than the setpoint checksum stored during the last
machine acceptance in MD 1399: $MD_SAFE_DES_CHECKSUM (checksum of the
machine data for safe functions). The safety-relevant data have been modified or there is
an error.
Request: During boot-up of the control.
- Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- Alarm display.
- Interface signals are set.
Check, and if necessary, correct all safety-relevant MDs. Then perform POWER ON. Per-
form acceptance test.
Switch control OFF - ON.
Axis %1 drive %2 limit values for safe end positions exchanged
%1 = NC axis number
%2 = Drive number
For the safe end position monitoring, there is a smaller value in the MD for the upper limit
value than in the MD for the lower limit value.
Request: During boot-up of the control.
- Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department.
Check the MDs
• Modify MD 1334: $MD_SAFE_POS_LIMIT_PLUS[n] (upper limit value for safe limit
position) and
• Modify MD 1335: $MD_SAFE_POS_LIMIT_MINUS[n] (lower limit value for safe limit
position)
and modify so that the upper limit value exceeds the lower limit value.
Switch control OFF - ON.
Axis %1 drive %2 SBH/SG not enabled
%1 = NC axis number
%2 = Drive number
In the machine data 1301: $MD_SAFE_FUNCTION_ENABLE (safe functions enable) the
function SBH/SG has not been enabled although the function SE/SN has been selected in
this MD.
Request: During boot-up of the control.
- Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department. Enable the function SBH/SG
via MD 1301: $MD_SAFE_FUNCTION_ENABLE (safe functions enable).
1 Alarms
1-507