Siemens simatic et 200s Operating Instructions Manual page 333

Control Signals: Search for Reference
Address Assignment
Byte 0 Bits 0.7 to 0.4:
Bit
Bit 3: SPEED (SPEED = 0 is creep feed; SPEED = 1 is rapid feed)
Bit 2: DIR_M
Bit 1: DIR_P
Bit 0: START
Bytes 1 to 3 Reference point coordinates
(linear axis: 0 to 16 777 215; rotary axis: 0 to end of rotary axis - 1)
Feedback Signals: Search for Reference
Address Assignment
Byte 0 Bit 3: SYNC
Bit 2: POS_ DONE
Bit 1: POS_ERR
Bit 0: POS_ACK
Bytes 1 to 3 Actual value
(linear axis: 0 to 16 777 215; rotary axis: 0 to end of rotary axis - 1)
Parameters: Search for Reference
Parameters
Reference point run and evaluation of the reference signal
Reference signal
Reference switch
Start direction of the
reference point run
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
7 6 5
0 0 1
Meaning
This parameter defines the relevant
switch or the combination of switch and
zero mark.
Relevant in the case of reference
signal:
Reference switch and zero mark
•
Reference switch
•
This parameter defines the referencing
direction in which the relevant switch
must be traversed.
4
MODE 3 = Reference Point Run
1
Value range
Reference switch and zero
•
mark
Reference switch
•
Zero mark
•
Reduction cam towards
•
minus
Reduction cam towards
•
plus
Minus limit switch
•
Plus limit switch
•
Plus
•
Minus
•
1PosUniversal/Digital
7.6 Functions of the 1PosU
Default setting
Reference switch and
zero mark
Reduction cam
towards minus
Plus
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