User Manual

VEGACOM 557 Siemens 25
5. 3 Reading in data (indicating values)
The indicating values are saved in a PLC data component of the S5 data memory. It is obliga-
tory to state DB3 in the programming package COM 525 when determining the orders for
measurement loops 1 … 128 and DB4 for measurement loops 129 … 255. See also chapter
5.1. Here also the data destination, e.g. source data component 3 from source word address
0 is stated.
Saving of the VEGAMET data in a PLC data component
The data words 0 to 12 are reserved and are not used. 2 data words (4 bytes) are required
per indicating value. Each VEGAMET provides 7 indicating values. These are saved in the
data component as follows:
Image 1 VEGAMET address = 1 … 15 (source word address 0)
DW
0 00000080
2 00 00 00 80 reserved, are not used
…
12 00 00 00 80
14 HB LB ME STAT
HB LB ME STAT VEGAMET address 1
26 HB LB ME STAT
210 HB LB ME STAT
HB LB ME STAT VEGAMET address 15
222 HB LB ME STAT
Explanation:
HB LB = Indicating value (Highbyte and Lowbyte )
ME = Field for measuring unit (will be filled with 0)
STAT = Status value
S5 functional component