Siemens SINUMERIK 840D Description Of Functions page 242

4 Data Descriptions
4.2 Machine data for SIMODRIVE 611 digital
4.2.2 Description of the machine data
1300 $MD_SAFETY_CYCLE_TIME
Monitoring clock cycle
Unit: Default:
31.25 µs 384 (= 12 ms)
This data sets the monitoring clock cycle for safe operation.
Position controller clock cycle <= Monitoring clock cycle <= 25ms
The monitoring clock cycle defines the response time of the monitoring
functions. It should be noted that a short monitoring cycle time increases the
load on the CPU.
1301 $MD_SAFE_FUNCTION_ENABLE
Enable safety functions
Unit: Default:
Hexadecimal 0
This data enables the partial functions for safe operation on an axis-specific or
spindle-specific basis. The bit assignment is as follows:
Bit 15 Bit 14
High byte Enable safe cams
SN4 - SN4 +
Bit 7 Bit 6
Low byte Enable
(840D from SW4.2)
Cam External
synchron- STOPs
ization
1302 $MD_SAFE_IS_ROT_AX
Axis-specific bits for safety-relevant functions
Unit: Default:
- 0
Axis and encoder bits related to safety functions.
Bit 15 Bit 14
High byte
0
Bit 7 Bit 6
Low byte
0
Bit 0
Bit 1
4-242
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Minimum value: Maximum value:
16 800
Minimum value: Maximum value:
0 FFEB Hex
Bit 13 Bit 12
SN3 - SN3 +
Bit 5 Bit 4
Reserved, these bits must be set to 0
Override, Enable
safely- external
reduced ESR
speed activation
Minimum value: Maximum value:
0 00 03
Bit 13 Bit 12
Reserved, these bits must be set to 0
0 0 0
Bit 5 Bit 4
Reserved, these bits must be set to 0
0 0 0
1: Rotary axis/spindle
0: Linear axis
1: Imperial system (inches etc.)
0: Metric system:
Relevant for:
FD/MSD
Data type:
short integer
Relevant for:
FD/MSD
Data type:
Binary
Bit 11 Bit 10 Bit 9
SN2 - SN2 + SN1 -
Bit 3 Bit 2 Bit 1
Enable
Enable Reserved
actual for
value functions
synchroniz with
ation 2- absolute
encoder reference
system
Relevant for:
FD/MSD
Data type:
Binary
Bit 11 Bit 10 Bit 9
0 0
Bit 3 Bit 2 Bit 1
0 0 Inch
system
© Siemens AG 2003 All Rights Reserved
11.03
611 digital
Becomes effective:
POWER ON
611 digital
Becomes
effective:
POWER ON
Bit 8
SN1 +
Bit 0
SE SBH/SG
611 digital
Becomes
effective:
POWER ON
Bit 8
0 0
Bit 0
Axis type