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FM 353, 354, 453 -- Setting up and parameterizing hardware -- Initializing and parameterizing modules
What must be considered when using the SIMATIC S7 FM354 module with incremental encoder?
What should you watch out for when calling FB POS_CTRL and FB POS_MSRM?
Which function modules (FM) can be used remotely in an ET 200M?
What should you watch out for when parameterizing a digital input for the "Set flying actual value" function in Automatic mode?
How do you assign parameters to an FM354 when using an absolute linear rule?
What does MD38 signify with FM 353?
How can you reduce the positioning times for short distances?
What invokes the procedure program error 0x0801 "Program selection subprogram error"?
How many FM 353s or FM 354s can the communicate with an OP that is connected to the CPU via MPI?
Transferring an NC block (traversing program) by user program to an FM353 / FM354
Aborting an active MDI record of an FM353 or FM354
Behavior of the FM 354 upon signal change at the release input
Aborting an active MDI record of an FM353 or FM354
Part number:

 

QUESTION:
What options are there for aborting an active MDI record of an FM353 or FM354? 

ANSWER:  

  1. Aborting with "STOP" control signal and individual command "Delete distance to go"
With the "STOP" control command you can abort an active MDI record. The FM353 or FM354 brakes to a standstill depending on the delay parameterized (machine data 41). 
If, after interrupting the current MDI record, you wish to start a new MDI record, then you must use the individual command "Delete distance to go". 
Note:
After successfully execution of "Delete distance to go" and the response "START RELEASE" (signal status "TRUE"), a new MDI record can be started.

Address

Name

Type

Initial value

Actual value

Comment

Control signal

DBX15.1

STOP

BOOL

FALSE

TRUE

Stop signal

Status signal

DBX23.0

DRV_EN

BOOL

FALSE

TRUE

If the start release is TRUE, MDI record can be started 

Individual command (write job)

DBX37.1

DELDIST_EN

BOOL

FALSE

TRUE

Trigger for individual command "Delete distance to go"

Finished signal

DBX47.1

DELDIST_D

BOOL

FALSE

TRUE

"TRUE" : "Delete distance to go" has been executed

Error signal

DBX57.1

DELDIST_ERR

BOOL

FALSE

FALSE

"TRUE" : Error has occurred during "Delete distance to go"

Table 1: Overview of signals used ("Stop")
 
  1. Aborting with control signal "Drive release"
You can abort an active MDI record by switching off the "Drive release". The FM353 or FM354 brakes according to the voltage ramp parameterized (machine data 45). After abortion of the MDI record, the setpoint value is set to the actual value. 
Note:
If the Drive release is switched on again, then a new MDI record can be started after the status signal "START RELEASE"  (signal status "TRUE"). 

Address

Name

Type

Initial value

Actual value

Comment

Control signal

DBX15.7

DRV_EN

BOOL

FALSE

TRUE

Drive release

Status signal

DBX23.0

DRV_EN

BOOL

FALSE

TRUE

If the start release is TRUE, MDI record can be started 

Table 2: Overview of signals used ("Drive release")

Notes on Points 1 and 2:

  1. The following requirements must be met to abort an active MDI record of an FM353 or FM354:
  • No digital input is parameterized as "Release input" or "External Start".
  • No dwell time G04 is set in the MDI record.
  • Valid MDI records have been transferred to FM353 or FM354.
  1. You need the following to abort an active MDI record of an FM353 or FM354:
  • Configuration software SIMATIC S7 FM353 Stepper or FM354 Servo >= Version 3.1,
  • Standard FC 1 (FC POS_CTRL) in your project (in the cyclic program).
  • User data base for the FM353 or FM354 in your project.
  1. More information is available in the manual for FM353 (Edition 04/2002) – Entry ID 2106357 or FM354 (Edition 04/2002) – Entry ID 2110628:
  • Structure of User Block -  Section 6.5
  • Description of "FC POS_CTRL"   -  Section 6.3.2
  • Description of the MDI mode -  Section 9.2.5
  • Description of the Drive release - Section 9.1

Keywords:
Operating mode MDI, Drive release


 Entry ID:15309290   Date:2003-06-03 
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