Siemens SIMATIC FM 353 - Page 235

Description of Functions
9-35
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Table 9-8 Control actions for “Automatic” mode (examples), continued
Signal name ExplanationLevel
Control action 5, traversing block with dwell
Checkback signals:
Travel plus [FR+] or Travel
minus [FR−]
Dwell time running [T-L]
Position reached, stop
[PEH]
t
0
During processing of a traversing block with dwell, the
dwell time t
0
[T-L] and [PEH] are output.
Control action 6, cancelation of the read-in enable during program execution (special situationl)
Control signal:
Read-in enable [EFG]
Checkback signals:
Travel plus [FR+] or Travel
minus [FR−]
Position reached, stop
[PEH]
If [EFG] is canceled during program execution, the
current block is processed up to the end, and program
execution is then suspended.
[FR+] and [FR−] are reset.
[PEH] is actuated.
Control action 7, resume program execution after read-in enable (special situation)
Control signal:
Read-in enable [EFG]
Checkback signals:
Travel plus [FR+] or Travel
minus [FR−]
Position reached, stop
[PEH]
The program resumes on [EFG].
[FR+] and [FR−] are reset.
[PEH] is reset.
Control action 8, stop during positioning with new start signal for resumed positioning
(special situation)
Control signals:
Stop [STP]
Start [ST]
Checkback signals:
Position reached, stop
[PEH]
Travel plus [FR+]
Start enable [SFG]
Processing in progress
[BL]
Interrupt with Stop
[FR+] is cleared when the axis comes to a standstill,
and [SFG] is enabled (if Stop is not active). [PEH] re-
mains cleared, since the defined position has not yet
been reached.
Start clears [SFG] and enables [FR+] again.
[BL] remains enabled.
Before the axis comes to a standstill, it is possible to
define a new direction “through start”.
Control action 9, end of program reached
Checkback signals:
Travel plus [FR+] or
Travel minus [FR−]
Processing in progr. [BL]
Position reached, stop
[PEH]
M function number [MNR]
Start enable [SFG]
The end of the program is indicated by the enabling of
[PEH], output of M2, M30 and resetting of [BL].