3.103
IDN134 Master Control Word
The amplifier’s control word within the MDT is stored within IDN134 as a diagnostic aid.
More detailed information can be found in the sercos
®
standards (see MDT Control Bit
13-15
Þ
p. 20).
Data Length: 2 bytes
Non-Volatile:
No
Data Type:
Binary
Write Access:
Read-only
Minimum:
Run-Up Check:
Maximum:
Cyclic Transfer:
Control word, length: two bytes
Bit No.
Control word description
Bits 15-13
1 1 1
Amplifier should follow the setpoints
Bit 15 (MSB)
Amplifier ON/OFF
0
Amplifier OFF
1
Amplifier ON: when changing from 0 -> 1: drive follows the master's setpoints
Bit 14
Enable amplifier
0
Not enabled: when changing from 1 –> 0, torque is immediately disabled and the power sta-
ge pulses are blocked (independent of bits 15 and 13).
1
Enable Amplifier : when changing from 0 –> 1, the enable is delayed in the amplifier by the
amplifier enable delay time.
Bit 13
Halt/Restart Amplifier
0
Halt Amplifier : when changing from 1 –> 0, amplifier is halted according to the „amplifier
acceleration bipolar“ parameter and the control loop remains closed (only possible when
bits 15 and 14 are set to 1).
1
Restart Amplifier : when changing from 0 –> 1, original function is continued. Only in velocity
control the amplifier has to use the „amplifier acceleration bipolar“. In position control the
control unit has to set position setpoints to the position feedback value before bit 13 is set.
Bit 12
Reserved
Bit 10
IPOSYNC: Control unit synchronization bit , not supported
Bits 11,9, 8
Operation mode
0 0 0
Primary operation mode (defined by operation data IDN32).
0 0 1
Secondary operation mode 1 (defined by operation data IDN33)
0 1 0 ...1 1 1
not supported
Bit 7
Real-time control bit 2
Bit 6
Real-time control bit 1
Bits 5, 4, 3
Data block element
0 0 0
Service channel not active, close service channel or break active transmission
0 0 1
IDN of the operation data. Service channel is closed for the previous IDN and opened for a
new IDN
0 1 0
Name of operation data
0 1 1
Attribute of operation data
1 0 0
Unit of the operation data
1 0 1
Minimum input value
1 1 0
Maximum input value
1 1 1
Operation data
Bit 2
0
Transmission in progress
1
Last transmission
Bit 1
R/W (read/write)
0
Read service INFO
1
Write service INFO
Bit 0
MHS
0/1
Service transport handshake of the master
58
sercos
®
for S300/S700
sercos
®
IDN Set
04/2016
Kollmorgen