Siemens SINUMERIK 840D Description Of Functions page 219

11.03
36918 $MA_SAFE_ENC_RESOL
MD number Encoder pulses per revolution
Default: 2 048
Change becomes effective after POWER ON:
Data type: DWORD
Meaning The number of pulses per revolution for a rotary encoder is specified here.
MD irrelevant for .... a linear encoder
36920 $MA_SAFE_ENC_GEAR_PITCH
MD number Spindle pitch
Default: 10
Change becomes effective after POWER ON:
Data type: DOUBLE
Meaning Gear ratio of gearbox between encoder and load for a linear axis with rotary encoder.
MD irrelevant for .... a linear encoder
36921 $MA_SAFE_ENC_GEAR_DENOM[n]
MD number Denominator of encoder/load gear
Default: 1
Change becomes effective after POWER ON:
Data type: DWORD
Meaning Denominator of the gearbox between encoder and load, i.e. the denominator of the
fraction
No. of encoder revolutions / No. of load revolutions
n = 0, 1, ... ,7 stands for gear stage 1, 2, ... 8
The current value is selected via safety-relevant input signals (SGEs).
Corresponds with ... MD 36922: $MA_SAFE_ENC_GEAR_NUMERA[n]
MD irrelevant for .... a linear encoder
36922 $MA_SAFE_ENC_GEAR_NUMERA[n]
MD number Numerator of encoder/load gear
Default: 1
Change becomes effective after POWER ON:
Data type: DWORD
Meaning Numerator of the gearbox between encoder and load, i.e. the numerator of the fraction
No. of encoder revolutions / No. of load revolutions
n = 0, 1, ... 7 stands for gear stage 1, 2, ... 8
The current value is selected via safety-relevant input signals (SGEs).
Corresponds with ... MD 36921: $MA_SAFE_ENC_GEAR_DENOM[n]
MD irrelevant for .... a linear encoder
36925 $MA_SAFE_ENC_POLARITY
MD number Direction reversal actual value
Default: 1
Change becomes effective after POWER ON:
Data type: DWORD
Meaning A direction reversal of the actual value can be selected using this data.
= -1:
= 0 or = 1:
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Min. input value: 1
Protection level (R/W) 7/2
Applies from SW 3.4
Min. input value: 0.1
Protection level (R/W) 7/2
Applies from SW 3.4
Min. input value: 1
Protection level (R/W) 7/2
Applies from SW 3.4
Min. input value: 1
Protection level (R/W) 7/2
Applies from SW 3.4
Min. input value: -1
Protection level (R/W) 7/2
Applies from SW 3.4
Direction reversed
Direction not reversed
4 Data Descriptions
4.1 Machine data
840D
Max. input value: 100 000
Unit: -
840D
Max. input value: 10 000
Unit: mm
Max. input value: 2 147 000 000
Unit: -
Max. input value: 2 147 000 000
Unit: -
Max. input value: 1
Unit: -
840D
840D
840D
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