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Processing read requests
A Read request is initiated by setting the relevant job request number. The relevant
operating mode must be activated.
The following Read requests are available:
Operating Mode
System Data
Basic operating data
Active NC block
Next NC block
Actual value for block chan-
ge
Service data
Operating error number
Suppl. operating data
Parameters/data
Digital inputs/outputs
Application data
Read measured values
x
Data are accepted or processed.
Operating mode control
The operating modes are discussed in detail in Section 9.2, the control-/checkback
signals and handling information in Section 9.1.
The user must write the control signals to the user data block (AW-DB). The
POS_CTRL block transfers the control signals from user data block AW-DB to the
FM 353 and the checkback signals from the FM 353 to user data block AW-DB.
The FM must be initialized.
The Table below lists the control and checkback signals, with symbols in German
and English.
Table 6-8
German
Control signals
TFB
BFQ/FSQ
ST
STP
R−
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Read
Data
Request
DBX42.0 DBB310...333
DBX42.1 DBB342...361
DBX42.2 DBB362...381
DBX42.3 DBB398...401
DBX42.4 DBB402...433
DBX42.5 DBB86...89
DBX43.5 DBB434...442
DBX43.3 DBB446...469
DBX43.4 DBB220...221
DBX43.6 DBB382...397
DBX43.7 DBB486...497
Control/checkback signals
English
AW-DB
TEST_EN
DBX14.1 Switch P bus interface to "Start-up"
OT_ERR_A
DBX14.3 Acknowledge operator and traversing errors
START
DBX15.0 Start
STOP
DBX15.1 Stop
DIR_M
DBX15.2 Negative direction
Programming the Technological Functions
T
STE
REF
SM
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Description
See
MDI
A/AE
Sect.
x
x
9.3.11
x
9 3 12
9.3.12
x
x
9.3.14
x
x
9.3.15
x
x
6.3.4
x
x
9.3.16
x
x
9.3.17
x
x
9.8
x
x
9.3.13
x
x
9.3.10
6.3.5
6-37
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