BECKHOFF AX2000 PROFIBUS DP communication profile - Manual (Page 37)

5.1.2 Status word (ZSW)
With the help of the status word, the amplifier state can be represented and a transmitted control
word can be verified.
If the amplifier does not react to changes of the control word (STW) as expected, the marginal con-
ditions like (enable of the output stage – hardware + software, application of the DC bus link vol-
tage) must be checked.
The bits in the status word can be mode-dependent or mode-independent.
The following table describes the bit assignment in the status word.
Bit Name Commentary
0 Ready for switch-on ---
1 Switched on ---
2 Operation enabled ---
3 Error see ASCII command ERRCODE
4 Voltage inhibited ---
5 Fast stop ---
6 Switch-on inhibit ---
7 Warning see ASCII command STATCODE
8 Setpoint / actual value monitoring only in position-control opmode: following error indicator
9 Remote not supported, fixed to 1
10 Setpoint reached only in position mode: In Position
11 Limit active not supported at present
12 Depends on mode used in ASCII-mode
13 Depends on mode used in ASCII-mode
14 Manufacturer-specific used in ASCII-mode
15 Manufacturer-specific reserved
States of the status machine:
State Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Not ready for
switch-on
0 X X 0 0 0 0
Switch-on inhibit 1 X X 0 0 0 0
Ready for switch-on 0 1 X 0 0 0 1
Ready for operation 0 1 X 0 0 1 1
Operation enabled 0 1 X 0 1 1 1
Error 0 X X 1 X X X
Error response 0 X X 1 0 0 0
Fast stop active 0 0 X 0 1 1 1
5.2 Operating modes
The selection of a new operating mode is described in detail on p. 23. This procedure must be follo-
wed for proper amplifier operation.
WARNING
Appropriate precautionary measures against damage caused by faulty presentation of data
formats or normalization of the setpoints must be taken by the user.
The possible operating modes are described below. PROFIBUS operating modes with a positive
number (1,2) are defined in the drive profile. Operating modes with a negative number (-1,-2...) are
labeled in the drive profile as being manufacturer-specific modes.
PROFIBUS for AX2000/2500 37
BECKHOFF
12/05
Process data channel