AKD EtherCAT | 4 EtherCAT Profile
4.4.2 Commands in the Control Word
Bit assignment in the control word
Bit
Name
Bit
Name
0
Switch on
8
Pause/halt
1
Disable Voltage
9
reserved
2
Quick Stop
10
reserved
3
Enable Operation
11
reserved
4
Operation mode specific
12
reserved
5
Operation mode specific
13
Manufacturer-specific
6
Operation mode specific
14
Manufacturer-specific
7
Reset Fault (only effective for faults)
15
Manufacturer-specific
Commands in the control word
Command
Bit 7
Fault
Reset
Bit 3
Enable Oper-
ation
Bit 2
Quick
Stop
Bit 1
Disable
Voltage
Bit 0
Switch
On
Transitions
Shutdown
X
X
1
1
0
2, 6, 8
Switch on
X
X
1
1
1
3
Disable Voltage
X
X
X
0
X
7, 9, 10, 12
Quick Stop
X
X
0
1
X
7, 10, 11
Disable Operation
X
0
1
1
1
5
Enable Operation
X
1
1
1
1
4, 16
Fault Reset
1
X
X
X
X
15
Bits labeled
X
are irrelevant.
0
and
1
indicate the status of individual bits.
Mode-dependent bits in the control word
The following table shows the mode-dependent bits in the control word. Only manufacturer-
specific modes are supported at present. The individual modes are set by Object 6060h
Modes of operation.
Operation mode
No Bit 4
Bit 5
Bit 6
Profile Position Mode (pp)
01h new_setpoint
change_set_
immediately
absolute/relative
Profile Velocity Mode (pv)
03h reserved
reserved
reserved
Profile Torque Mode (tq)
04h reserved
reserved
reserved
Homing Mode (hm)
06h homing_operation_
start
reserved
reserved
Interpolated Position Mode (ip) 07h
reserved
reserved
Cyclic synchronous position
mode
08h reserved
reserved
reserved
Description of the remaining bits in the control word
Bit 8
: (Pause) If Bit 8 is set, then the drive halts (pauses) in all modes. The setpoints (speed
for homing or jogging, motion task number, setpoints for digital mode) for the individual
modes are retained.
Bit 9,10
: These bits are reserved for the drive profile (DS402).
Bit 13, 14, 15
: These bits are manufacturer-specific, and reserved at present.
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Kollmorgen | kdn.kollmorgen.com | October 2017