Siemens SINUMERIK 840D Description Of Functions page 344

6 Alarms
6.2 Alarms from SIMODRIVE 611 digital
300744
Axis %1, drive %2 checksum error safe monitoring functions –
acknowledgement and acceptance test required!
Parameter %1 = NC axis number
%2 = drive number
Explanation The actual checksum of the safety-relevant MDs calculated by the drive and
saved in MD 1398: $MD_SAFE_ACT_CHECKSUM (display of the checksum of
the machine data for safe functions) has another value than the setpoint
(reference) checksum saved during the last machine acceptance in MD 1399:
$MD_SAFE_DES_CHECKSUM (checksum of the machine data for safety-
related functions). The safety-relevant data has been modified or there is an
error.
Response Mode group not ready
Channel not ready
NC start inhibit in this channel
NC stop for alarm
Alarm display
Interface signals are set
Remedy Check all safety-relevant MDs and correct if necessary. Then carry-out a power
on. Carry-out an acceptance test on the machine.
Program continuation Power-down the control and power-up again.
300745
Axis %1, drive %2 limit values for safe end positions exchanged
Parameter %1 = NC axis number
%2 = drive number
Explanation The data for the upper limit for the SE monitoring function contains a lower
value than the data for the lower limit.
Interrogation: When the control runs-up.
Response Mode group not ready
Channel not ready
NC start inhibit in this channel
NC stop for alarm
Alarm display
Interface signals are set
Remedy Check the following MDs
MD 1334: $MD_SAFE_POS_LIMIT_PLUS[n] (upper limit value for the safe limit
position) and
MD 1335: $MD_SAFE_POS_LIMIT_MINUS[n] (lower limit value for the safe
limit position) and change so that the upper limit value is greater than the lower
limit value.
Program continuation Power-down the control and power-up again.
300746
Axis %1, drive %2 SBH/SG not enabled
Parameter %1 = NC axis number
%2 = drive number
Explanation 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.
Interrogation: When the control runs-up.
Response Mode group not ready
Channel not ready
NC start inhibit in this channel
NC stop for alarm
Alarm display
Interface signals are set
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
© Siemens AG 2003 All Rights Reserved
11.03