Siemens SIMATIC FM 353, Manual

Page: 109 / 361

Programming the Technological Functions
6-29
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
The table below provides an overview of the functions (FC), function blocks (FB),
data blocks (DB) and organization blocks (OB) required for communication and
control of the FM 353.
Table 6-6 Standard function blocks of the “FM353_354” block library (overview)
Block Block Name Description/Function Remarks
FC 0
Page 6-30
POS_INIT Call in OB 100 and OB 86, start-up/initializa-
tion
Required for application,
number can be changed
1)
FB 1
Page 6-30
POS_CTRL Call in OB 1, cyclic operation (synchroniza-
tion with the FM 353)
Basic functions and operating modes, inter-
face processing, read and write requests
FB 2
Page 6-41
POS_DIAG Call in OB 82, internal errors, external er-
rors, and external channel errors of the FM
FB 3
Page 6-41 POS_MSRM Call in OB 40 or OB 1,
reading out of the measured values
To be used only if the
function in question is re-
quired for the application in
question; the number can
be changed
1)
DB 1 IFFM_ICTRL Interface to the FM and instance DB for
POS_CTRL (FB 1)
Required for application,
number can be changed
1)
DB 3 IMSRM Instance DB for POS_MSRM (FB 3) Required for application if
POS_MSRM is called;
number can be changed
1)
OB 1 − Cyclic level Required for application
OB 82 − Diagnostic interrupt level
OB 100 − Start-up level
OB 86 − Subrack failure For distributed configura-
ti
OB 122 − I/O access error
tions
1) − The block number is a default setting , block number can be changed in the SIMATIC Manager
− Symbol table entries can only be changed in conjunction with symbolic programming
Note
The symbolic block identifier is used from here on.