Operation via fieldbus
74
a4643-1.0 HBM: public ClipX
The following table shows the byte assignment of the object value when
accessing the object dictionary.
The control word
Setting a bit in the control word (Set command) triggers the function specified in
the table. However, all set functions are always executed, even if only one bit is
changed. If, for example, bit 1 (Tare) is already set, taring is triggered again on
every change of one of the other bits. The control word comprises 32 bits; the
bits not listed here are reserved for later upgrades.
The control word is acknowledged by ClipX – see Data transfer from the ClipX
to the controller. If the acknowledgment matches the transmitted control word,
the action has been executed and you can delete the bit.
Bit 31 … 24 Bit 23 … 16 Bit 15 … 8 Bit 7 … 0
Data object types UDINT, DINT, REAL
Not used Data object types INT, UINT
Not used Data object types
SINT, USINT
Bit Function
0 Zero (the gross value)
1 Tare (zero the net value)
2 Reset zero value (= 0)
3 Reset tare value (= 0)
4 Set the 1. Point Electrical in two-point scaling
5 Set the 2. Point Electrical in two-point scaling
6 Hold capture 1
7 Hold capture 2
8 Delete capture 1
9 Delete capture 2
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