Siemens SIMATIC FM 453, Manual

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9-23
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Preconditions:
S
The FM 453 has been parameterized.
S
The mode has been selected and confirmed
S
Drive enable [AF] = 1 (control signal, FC MODE_WR)
S
Stop [STP] = 0 (control signal, FC MODE_WR)
S
Servo enable (RF) = 1 (FC MODE_WR, job no. 10)
S
Velocity levels have been transferred (FC MODE_WR, job no. 1)
S
Axis is synchronized
Table 9-5 Control Actions for “Incremental Relative” Mode (examples)
Signal Name Level Explanation
Control action 1, enable “Incremental relative” mode
Control signal:
Mode [BA]
Checkback signals:
Active mode [BAR]
Start enable [SFG]
The user initiates a [BA] command.
The module returns [BAR] and [SFG].
Control action 2, define position
Transfer increment (job no.
3)
Select increment (254)
Control signal:
Direction plus [R+]
Checkback signals:
e.g. Travel plus [FR+]
Start enable [SFG]
Processing in progress [BL]
e.g. Travel plus [FR+]
Processing in progress [BL]
Position reached, stop [PEH]
When the increment has been transferred and selected, [R+]
can be initiated.
The axis cancels the [SFG] and outputs messages [BL] and
[FR+]
When the defined position has been reached, the axis enables
[PEH]; [SFG] and checkback signals [FR+] and [BL] are
reset.
Control action 3, stop during positioning
Control signal:
Stop [STP]
Checkback signals:
Travel minus [FR–]
Start enable [SFG]
If Stop is enabled during positioning, the axis stops. [FR–] is
reset, and [SFG] is activated. [PEH] is not output, since posi-
tioning is not complete.
Before the axis comes to a standstill, it is possible to define a
new direction “through start”.
Control Actions
Description of Functions