AMCI SMD34K, User Manual

Page: 58 / 100

C
ONFIGURATION
D
ATA
F
ORMAT
SMD34K User Manual
ADVANCED MICRO CONTROLS INC.
58
Data Format (continued)
Configuration Word 0 Format (continued)
Bit 12: Reserved –
Must equal zero.
Bit 11: Use_Backplane_Proximity –
“0” when the Backplane_Proximity_Bit is not used when homing the
SMD34K. “1” when the Backplane_Proximity_Bit is used when homing the unit. Note that this bit is
not the Backplane_Proximity_Bit, but enables or disables its operation. Do not use the
Backplane_Proximity_Bit if you only want to home to a Home Limit Switch. (Leave this bit equal to
“0”.) If you enable this bit and then never turn on the Backplane_Proximity_Bit, the SMD34K unit
will ignore all transitions of the home limit switch and you will not be able to home the device.
Bit 10: Use_Encoder –
“0” when the built-in encoder is not used or not available. “1” to enable the built-in
absolute or quadrature encoder. You must also program the Encoder_Resolution parameter in CoE
index 8010:05.
Bit 9: Reserved –
Must equal zero.
Bits 8-6: Input 3 Function –
See the table below.
Input 3 is not available for use when using the Distributed Clock functionality to syn-
chronize the SMD34K to the EtherCAT SYNC0 signal. In this case, the input should be
set as a General Purpose Input and must be left disconnected.
Bits 5-3: Input 2 Function –
See the table below.
Bits 2-0: Input 1 Function –
See the table below.
Table R5.2 Configuration Data: Input Function Selections
Bits
8 7 6
5 4 3
2 1 0 Function Available On
0 0 0 General Purpose Input
The input is not used in any of the functions of the
SMD34K, but it’s status is reported in the Network Data.
This allows the input to be used as a discrete DC input to
the host controller.
0 0 1 CW Limit Input defines the mechanical end point for CW motion.
0 1 0 CCW Limit Input defines the mechanical end point for CCW motion.
0 1 1 Start Indexed Move
Starts the move that is currently located in the output reg-
isters.
0 1 1
Start Indexed Move /
Capture Encoder Value
When the encoder is enabled on an SMD34K, the encoder
position value is captured whenever this input transitions.
An inactive-to-active state transition will also trigger an
Indexed Move if one is pending in the SMD34K.
1 0 0
Stop Jog or
Registration Move
Brings a Jog or Registration Move to a controlled stop.
1 0 0
Stop Jog or
Registration Move
& Capture Encoder Value
When the encoder is enabled on an SMD34K, the encoder
position value is captured when the input triggers a con-
trolled stop to a Jog or Registration move.
1 0 1 Emergency Stop
All motion is immediately stopped when this input makes
an inactive-to-active transition.
1 1 0 Home Used to define the home position of the machine.
1 1 1 Invalid Combination This bit combination is reserved.