Siemens SIMATIC FM 351 - Introduction; Requirements

12
12-2
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
Table 12-1 below describes the contents of the channel DB with the
associated absolute and symbolic addresses.
Table 12-1 Contents in the Channel DB
Address Decla-
ration
Variable Data
Type
Starting
Value
Description
Entries of FC INC_MODE
0.0 in DRV_EN BOOL FALSE  TRUE: Positioning enable
 FALSE: Switches off a running
positioning
0.1 in REL_ABS BOOL FALSE  TRUE: Absolute incremental mode
 FALSE: Relative incremental mode
1.0 in TRG_NO BYTE B#16#0 Incremental dimension number
2.0 in OT_ERR_A BOOL FALSE  TRUE: Acknowledge operating er-
ror
 FALSE: No response
2.1 in STOP BOOL FALSE  TRUE: Stop running approach
 FALSE: No response
4.0 out OT_ERR BOOL FALSE  TRUE: Operating error occurred
 FALSE: No operating error oc-
curred
4.1 out INC_MD_A BOOL FALSE  TRUE: Incremental operating
mode active
 FALSE: Not active
4.2 out POS BOOL FALSE  TRUE: Positioning running
 FALSE: No response
4.3 out POS_RCD BOOL FALSE  TRUE: Position reached
 FALSE: No response
6.0 in_out START BOOL FALSE  TRUE: Start positioning
 FALSE: No response
6.1 in_out DIR_P BOOL FALSE  TRUE: Positive direction
 FALSE: No response
6.2 in_out DIR_M BOOL FALSE  TRUE: Negative direction
 FALSE: No response
Addresses
12.0 stat MOD_ADR (Entries!) WORD W#16#0 Module address
14.0 stat CH_ADR (Entries!) DWORD DW#16#0 Channel address
18.0 stat DS_OFFS (Entries!) BYTE B#16#0 Record offset
Contents in the
Channel DB
Structure of the Channel DB