Siemens SINUMERIK 840D sl Series Diagnostics Manual page 923

08/2005
Reactions: - Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Set parameters correctly for all associated machine data:
• MD_5028 $MD_NO_TRANSMISSION_BITS (SSI frame length): number of bits in an
SSI protocol, including all bits, such as alarm bit/parity bit
• MD_5021 $MD_ENC_ABS_TURNS_MOTOR (ultiturn): number of resolvable revolu-
tions
• MD_5022 $MD_ENC_ABS_RESOL_MOTOR (singleturn): number of increments per
revolution
• MD_5027.Bit 12 $MD_ENC_CONFIG.Bit 12: parity bit
• MD_5027.Bit 14 $MD_ENC_CONFIG.Bit 14: alarm bit
Example:
SSI encoder with 25 bits message frame length, 12 bits multiturn, 12 bits singleturn, one
alarm bit:
• $MD_NO_TRANSMISSION_BITS = 25
• $MD_ENC_ABS_TURNS_MOTOR = 4096
• $MD_ENC_ABS_RESOL_MOTOR = 4096
• $MD_ENC_CONFIG.Bit 14 = 1
• $MD_ENC_CONFIG.Bit 12 = 0
Program Con- Switch control OFF - ON.
tinuation:
311712
Axis %1 drive %2 multiturn SSI motor measuring system invalid
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The configuration of a linear SSI motor measuring system is incorrect: A linear measuring
system cannot have any multiturn information.
Reactions: - Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Set MD_5021 $MD_ENC_ABS_TURN_MOTOR (number of representable revolutions) to
0.
Program Con- Switch control OFF - ON.
tinuation:
311716
Axis %1 drive %2 SSI measuring system without incremental signals not possible
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: With the present module, it is not possible to use SSI encoders without incremental sig-
nals.
Reactions: - Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-923