Reactions:
Remedy:
Program Continuation:
Axis %1 drive %2 transmission length SSI direct measuring system invalid
%1 = NC axis number %2 = Drive number
Configuration of the direct measuring system is faulty for SSI encoder: MD_1041 $MD_NO_TRANSMISSION_BITS_DM (SSI transmission length) is smaller than the number of all parameterized bits in MD_1031 $MD_ENC_ABS_TURNS_DIRECT (multiturn), MD_1032 $MD_ENC_ABS_RESOL_DIRECT (singleturn) and MD_1037 $MD_ENC_CONFIG_DIRECT Bit 14 (alarm bit) and MD_1037 $MD_ENC_CONFIG_DIRECT Bit 12 (parity bit).
- Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Set parameters correctly for all associated machine data:
MD_1041 $MD_NO_TRANSMISSION_BITS_DM (SSI transmission length): number of bits in an SSI protocol, including all bits such as alarm bit and parity bit.
MD_1031 $MD_ENC_ABS_TURNS_DIRECT (multiturn): number of resolvable revolutions
MD_1032 $MD_ENC_ABS_RESOL_DIRECT (singleturn): number of increments per revolution
MD_1037.Bit 12 $MD_ENC_CONFIG_DIRECT.Bit 12: parity bit MD_1037.Bit 14 $MD_ENC_CONFIG_DIRECT.Bit 14: alarm bit Example:
SSI encoder with 25 bits transmission length, 12 bits multiturn, 12 bits singleturn, one alarm bit:
$MD_NO_TRANSMISSION_BITS_DM = 25 $MD_ENC_ABS_TURNS_DIRECT = 4096 $MD_ENC_ABS_RESOL_DIRECT = 4096 $MD_ENC_CONFIG_DIRECT.Bit 14 = 1 $MD_ENC_CONFIG_DIRECT.Bit 12 = 0 Switch control OFF - ON.
© Siemens AG 2005 All Rights Reserved