Siemens SIMATIC S7-300 Manual page 261

Writing Traversing Programs
Overview To execute the desired operations of the machine axis (sequence, position,
etc.) in "Automatic" mode, the FM 354 needs certain information. This in-
formation is programmed with "Parameterize FM 354" (traversing program
creation) in the form of a traversing program, based in principle on DIN
66025.
Traversing
Each traversing program is stored under a program number.
programs
A traversing program consists of not more than 100 traversing blocks.
The program number and traversing blocks are converted to an internal for-
mat (see Section 9.3.12), are stored in the appropriate data block, and are
transferred to the module. where they are administered.
The possible number of programs depends on the amount of memory avail-
able (max. 16 Kbytes) and on the length of the individual programs.
Program length in bytes: 110 + (20 x no. of traversing blocks)
Program name Any program can be assigned a name (optional).
The program name may have up to 18 characters, and is saved with the pro-
gram.
Program number Programs may be numbered from % 1 to % 199.
Traversing block A traversing block contains all the data required to perform a machining step.
Program structure
A program consists of several blocks. Each block number occurs only once,
and numbers are arranged in ascending order.
A sample program structure follows:
FM 354 Servo Drive Positioning Module
10
10-1