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12. Appendix 2 – Control and status word
Dual port ethernet option board installation manual
MN032004EN October 2017 www.eaton.com
12. Appendix 2 – Control and status word
12.1 Control word bit description
The Control word is composed of 32 bits.
FBFixedControlWord consist of the first 16 bits.
FBGeneralControlWord consist of the remaining 16 bits.
While the functionality of FBFixedControlWord is fixed
in the Eaton standard applications, the functionality of
FBGeneralControlWord is totally application specific and can
vary even in the standard applications.
The meanings of FBFixedControlWord bits are described
below. Unused bits have to be set to zero.
otee: N This table is valid for standard applications.
otee: N
There are some control word bit modifications in SPX
drive. These modifications are described in Table 158.
Unused bits have to be set to zero.
Table 157. FBFixedControlWord bits
Bit Function Description
B0 Start/Stop
0 Stop request from fieldbus.
1 Run request from fieldbus.
B1 Direction
0 Requested direction is “FORWARD”.
1 Requested direction is “REVERSE”.
B2 Fault reset
0 No action.
1 No action. Rising edge (0->1) = Active faults, alarms and infos are reset.
B3 Stop mode 1
0 Stop mode is unmodified.
1 Stop mode is overridden to “Coasting”.
B4 Stop mode 2
0 Stop mode is unmodified.
1 Stop mode is overridden to “Ramping”.
B5 Quick ramp time
0 Normal deceleration ramp time.
1 Deceleration ramp time is switched to shorter than normal.
B6 Freeze Setpoint
0 Changes in the setpoint value from fieldbus (FB Speed Reference) are taken into use by the application.
1 Changes in the setpoint value from fieldbus (FB Speed Reference) are not taken into use by the application.
B7 Setpoint to Zero
0 The setpoint value from fieldbus is taken from FB Speed Reference.
1 The setpoint value from fieldbus is changed to 0.
B8 Request Fieldbus Control
0 Control Place is as parameterized in the drive (unchanged).
1 Control Place is overridden to Fieldbus Control.
B9 Request Fieldbus Reference
0 Source of the setpoint value is as parameterized in the drive (unchanged).
1 Source of the setpoint value is overridden to Fieldbus.
B10 Jogging 1
0 No action.
1 Jogging request with ref1.
B11 Jogging 2
0 No action.
1 Jogging request with ref2.
B12 Quick stop
0 Drive operates as normal.
1 Drive executes quick stop/emergency stop.
B13 Reserved
0 –
1 –
B14 Reserved
0 –
1 –
B15 Reserved
0 –
1 –