Parameter Declaration Data type Memory block Description
RACK OUTPUT WORD I, Q, M, D, L See AREA below
SLOT OUTPUT WORD I, Q, M, D, L
SUBADDR OUTPUT WORD I, Q, M, D, L
AREA specifies how the output parameters RACK, SLOT and SUBADDR must be inter-
preted. These dependencies are depicted below.
Value of
AREA
System Significance of RACK, SLOT and SUBADDR
0 - reserved
1 Siemens S7-300 RACK: Rack number
SLOT: Slot number
SUBADDR: Address offset to base address
2 Decentralized
periphery
RACK (Low Byte): Station number
RACK (High Byte): DP master system ID
SLOT: Slot number at station
SUBADDR: Address offset to base address
3 ... 6 - reserved
The return value contains an error code if an error is detected when the function is being
processed.
Value Description
0000h No error has occurred.
8090h The specified logical address is not valid or an illegal value exists for parameter IOID.
14.1.38 SFC 50 - RD_LGADR - Read all logical addresses of a module
The SFC 50 RD_LGADR (read module logical addresses) determines all the stipulated
logical addresses of a module starting with a logical address of the respective module.
You must have previously configured the relationship between the logical addresses and
the modules. The logical addresses that were determined are entered in ascending order
into the field PEADDR or into field PAADDR.
AREA
RET_VAL (Return value)
Description
VIPA SPEED7
Integrated Standard
System Functions > SFC 50 - RD_LGADR - Read all logical addresses of a module
HB00 | OPL_SP7 | Operation list | en | 18-30 684
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