Table 8- 1 Assignment Of Data Record 3 - Siemens SIWAREX WP251 Manual

Scale parameters and functions
8.3 DR 3 Calibration parameters
Basic calibration of the scale is accomplished through the calibration parameters and
calibration procedure (assignment of zero point and reference point). With a wire jumper on
the "P" and "PR" terminals (parameter protection), most of DR 3 parameters can no longer
be changed (write-protected). This provision is relevant for applications requiring official
calibration. All changes in data record 3 require service mode to be switched on for the
module. If service mode is not active, all parameter inputs are directly rejected with an error.
Procedure
● Read DR 3 from SIWAREX (in SIWATOOL, SIMATIC DB or ModbusMaster)
● Check all parameters and change them for the specific application
● Transfer data record DR 3 to SIWAREX (from SIWATOOL, SIMATIC DB or Modbus
Master)
● Perform the calibration of the scale (zero point and calibration point 1 – optionally
calibration point 2)
● Read DR 3 from SIWAREX (in SIWATOOL, SIMATIC DB or ModbusMaster)
Table 8- 1 Assignment of data record 3
Parameter
Data record number
Length
Application
Version identifier
Scale name header
Scale name (Page 66)
Unit of weight (Page 66)
Gross identifier (Page 66) 0: "B"
Code for regulations
(Page 67)
Reserve
62
Description Format
Contains no. of the USHORT
data record
Data record length USHORT
information
Information on appli- USHORT
cation to which DR
belongs
Current data record USHORT
version information
Maximum length and UBYTE
actual length of string
for scale name
Freely selectable CHAR
scale name
0: "mg" USHORT
1: "g"
2: "kg"
3: "t"
4: "oz" (ounce)
5: "lb" (pound)
6: "T" (=short tons)
7: "TL" (= long tons)
USHORT
1: "G"
0: None USHORT
1: OIML
Reserve USHORT
Length De- Min
[bytes] fault
2 3 -
2 172 -
2 105 -
2 1 1
2 12, -
12
12 " " -
2 2 0
2 0 0
2 0 -
2 0 -
Max Write Modbus
protec- holding
tion register
- - 1000
- - 1001
- - 1002
65535 - 1003
- x 1004
- x 1005
6 x 1011
1 x 1012
- - 1013
- - 1014
SIWAREX WP251
Manual, 12/2015, A5E37203357A