Dia
nostic Information
Dec 2021
ATM60 / ATM90 / KHK53 49
9.4.4 Operating Status
Shows the ‘Operating Mode’ parameter. -- (see 8.3.3), DDLM_Set_Prm.
(s1) of 9.4.1
Status of the scaling function - The value is reset to zero '0' in the following cases:
• The scaling parameters (CPR, CMR) are configured such that the default value
is used, also when the control bit 'DDLM_Set_Prm' is set to one ('1').
• The Class 2 functionality control bit 'DDLM_Set_Prm' is set to zero (0) (not en-
abled).
(s2) of 9.4.1
If, during configuration, the diagnostic control of the Operating Mode for the linear
encoder KHK53-P was disabled {(0) set} then, in case of a position error, the mas-
ter is not allerted by the slave to retrieve a diagnostic data set. Thus, the control
(PLC) remains in a trouble-free state.
However, the diagnostic data is formed, ready in the slave’s corresponding output
registers, and could be retrieved at the DP master’s request (until the fault condi-
tion for the position error no longer exists).
A position error can, for instance, be triggered by briefly exceeding the positional
tolerance (excessive distance between measuring element and reading head). A
fault message at the control, due to this event, is however not always wanted.
9.4.5 Device Identification
The encoder type can be queried via this diagnostic byte.
Device/model
Ident_Number (hex) Encoder type
ATM60-P 59.52 1 (rotary, absolute)
ATM90-P 00.FE 1 (rotary, absolute)
KHK53-P 05.F6 2 (linear, absolute)
9.4.6 Physical Resolution Span (PRS)
For rotary encoders, the parameter shows the max. number of measuring steps per revolution.
• The ATM60-P supports a resolution of { 8,192 } steps/rev.
• The ATM90-P supports a resolution of { 2,048, 4,096 or 8,192 }
steps/rev.
For linear encoders, this parameter shows the smallest measuring step supported by the en-
coder (max. physical resolution), which is given in nanometres (nm).
• The KHK53-P supports a resolution of 0.1 mm
. This corresponds to the value
100,000.
9.4.7 Physical Number of Revolutions (PNumR)
For rotary encoders, this parameter shows the max. number of revolutions which can be distin-
guished.
• The ATM60-P supports a resolution of { 8,192 } revolutions.
• The ATM90-P supports a resolution of { 2,048, 4,096 or 8,192 } revolutions.
This parameter is irrelevant to linear encoders -- Display [FF.FF](h).
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