Siemens SIMATIC FM 353 - Page 117

Programming the Technological Functions
6-37
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
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
Read
Request
Data T STE REF SM MDI A/AE
See
Sect.
Basic operating data DBX42.0 DBB310...333 x x x x x x 9.3.11
Active NC block DBX42.1 DBB342...361 x
9312
Next NC block DBX42.2 DBB362...381 x
9.3.12
Actual value for block chan-
ge
DBX42.3 DBB398...401 x 9.3.14
Service data DBX42.4 DBB402...433 x x x x x x 9.3.15
Operating error number DBX42.5 DBB86...89 x x x x x x 6.3.4
Suppl. operating data DBX43.5 DBB434...442 x x x x x x 9.3.16
Parameters/data DBX43.3 DBB446...469 x x x x x x 9.3.17
Digital inputs/outputs DBX43.4 DBB220...221 x x x x x x 9.8
Application data DBX43.6 DBB382...397 x x x x x x 9.3.13
Read measured values DBX43.7 DBB486...497 x x x x x x 9.3.10
6.3.5
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 Control/checkback signals
German
English AW-DB Description
Control signals
TFB TEST_EN DBX14.1 Switch P bus interface to “Start-up”
BFQ/FSQ OT_ERR_A DBX14.3 Acknowledge operator and traversing errors
ST START DBX15.0 Start
STP STOP DBX15.1 Stop
R− DIR_M DBX15.2 Negative direction