Siemens simatic et 200s Operating Instructions Manual page 47

Feedback Bits Notes
SYNC This bit is set after a correct search for reference.
The SYNC bit is deleted after parameter assignment with new ET 200S station parameters or after
deletion of the pulse enable.
Notes on the Control Bits
Control Bits Notes
Base Frequency F To set the base frequency in steps
b:
Mode Mode = 0 incremental mode, relative
Mode = 1 search for reference
C_PAR Start of parameter changing
DIR_M This bit requests and starts a positioning job in the backward direction.
DIR_P This bit requests and starts a positioning job in the forward direction.
DRV_EN If you use the DI 3 digital input as external stop, this bit is interpreted as a pulse enable.
Limit switch This limit switch limits the travel range in the backward direction. You set or delete this bit in your
LIMIT_M user program.
Limit switch This limit switch limits the travel range in the forward direction. You set or delete this bit in your user
LIMIT_P program.
EXTF_ACK Acknowledgment bit for diagnostic message
Multiplier G To set the velocity/output frequency in steps
Multiplier n To set the start-stop frequency in steps
Reduction factor R The base frequency F
start-stop frequency F
STOP With this bit, you can stop a positioning job with a delay ramp at any time.
STOP_REF_EN When the bit is set, the STOP function is active on the reference cam. When the reference cam is
detected, the positioning job is stopped with a delay ramp.
Distance A 20-bit value that contains (without signs) the pulses that still have to be traversed.
Multiplier i To set the acceleration/delay in steps
Access to Control and Feedback Interface in STEP 7 Programming
Feedback interface
Control interface
Load and transfer commands are also possible with CPU 3xxC, CPU 318-2 (as of V3.0), CPU 4xx (as of V3.0)
1
See also
Stopping the Stepping Motor (Page 37)
Pulse Enable (Page 39)
Starting the Positioning Job (Page 48)
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
is multiplied by 0.1 if the bit is set. This reduces the output frequency F
b
, and the acceleration/delay a by the same amount.
ss
Configured with STEP 7
via GSD file1
(hardware catalog\PROFIBUS DP\Other Field
Devices\ET 200S)
Read with SFC 14 "DPRD_DAT"
Write with SFC 15 "DPWR_DAT"
1STEP 5V/204kHz
2.8 Feedback and Control Interface
Configured with STEP 7
via HW Config
(hardware catalog\PROFIBUS DP\ET 200S)
Load command e.g. L PED
Transfer command e.g. T PAD
, the
a
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