Baumer BA_DSRT_22DJ - Handbuch (Seite 60)

Manual_CANopen_StrainLink_EN_V3_05.doc 60/65 Baumer
22.07.11/dam Frauenfeld, Switzerland
8.2 Read process value with SDO (16 and 24bit)
Initialize of measurement:
1. Set data type (object 21’12h) 24-Bit
71’30h => 16 bit process value 81’30h => 24 bit process value
2. Request unit (object 61’31h) 24-Bit
FA’01’01’00h => µ
ε
or µm/m FA’01’01’00h => µ
ε
or µm/m
3. Request decimal digits (object 61’32h) 24-Bit
02h => 2 decimal digits => Divide with 10 2 02h => 2 decimal digits => Divide with 10 2
Measurement cycle:
Object 71’30h, strain Object 81’30h, strain
01’2Ch => 300
Dez
Shift with decimal digits: 300 / 10 2 = 3.00
Add unit: 3.00 => 3.00µ
ε
01’38’80h => 80’000
Dez
Shift with decimal digits: 80'000 / 10 2 = 800
Add unit: 800 => 800µ
ε
Object 71’30h, compression Object 81’30h, compression
FE’D4h => 1111’1110’1101’0100b
Shift with decimal digits: -300 / 10 2 = -3.00
Add unit: -3.00 => -3.00 µ
ε
FE’C7’80h => 1111’1110’1100’0111’1000’0000b
Shift with decimal digits: -80'000 / 10 2 = -800
Add unit: -800 => -800µ
ε
16-Bit
16-Bit
16-Bit
16-Bit
16-Bit
24-Bit
24-Bit
- 0000’0001’0010’1011b
- 0000’0001’0010’1100b = -300
Dez
inv.
+1
- 0000’0001’0011’1000’0111’1111b
- 0000’0001’0011’1000’1000’0000b = -80’000
Dez
inv.
+1