M-Series Operator’s Manual 4/9/15
Parameter 284-291 – Brake Resistor Wattage for ACDC Drives 1-8
These parameters specify the brake resistor wattage which default to the minimum internal resistor value. If CNC11
detects that the estimated brake wattage exceeds these parameter settings, then a "470 _ axis (drive _) brake wattage
exceeded" message is reported in the status window and written to the message log. These warnings may be written at
most twice a minute. User variables #27201-#27208 can be used in an M- or G-code program to return the estimated
brake wattage as reported by the ACDC drive to MPU11. Note that these are drive numbers, and match the LED
indicator on the ACDC drive, but do not necessarily match the axes as displayed in the DRO due to the flexibility of
drive mapping.
Parameter 300-307 – Drive assignment to Axes 1-8
These parameters control to what physical drive the commands for motion are sent. Parameter 300 assigns a physical
drive to axis 1, parameter 301 assigns a physical drive to axis 2, and so on. The values for these parameters can be set
to any value from 1-25 based on the table below. These parameters must be set before attempting to move motors.
Note that if you change any of these values, the machine must be powered down and restarted for the changes to
take effect. Contact your dealer before changing these values.
Drive Number
Assignment
Drive Type and Location Description
1,2,3,4,5,6,7,8 Drive Bus Channel 1-8 Drive types are DC3IOB, DC1, ACSINGLE, OPTIC4, and
OPTICDIRECT. Other drive types may be added in the
future.
9, 10, 11, 12 GPIO4D/RTK4 Drive Out 1-4 Drive output is implemented as outputs on the PLC bus
which are updated at 4000hz.
13 RTK4 Drive Out 5 5
th
output for RTK4 drive
14-16 Reserved
17, 18, 19, 20 Legacy DC 1-4 Examples of Legacy DC drives are: QUADDRV1,
SERVO1, M15DRV1, DC3IO, SERVOLV, SERVO3IO,
DCSINGLE.
21,22,23,24,25 Legacy AC 1-5 Examples of Legacy AC drives are: SD1, and SD3.
Parameter 308-315 –Encoder assignment to Axes 1-8
These parameters control to which encoder the axis should look for feedback. Parameter 308 assigns an encoder to axis
1, parameter 309 assigns an encoder to axis 2, and so on. The values for these parameters can be set to any value from
1-15 based on the table below. These parameters must be set before attempting to move motors. Note that if you
change any of these values, the machine must be powered down and restarted for the changes to take effect.
Contact your dealer before changing these values.
Encoder
Number
Location Description
1 MPU11 onboard encoder 1
2 MPU11 onboard encoder 2
3 MPU11 onboard encoder 3
4 MPU11 onboard encoder 4
5 MPU11 onboard encoder 5
6 MPU11 onboard encoder 6
Encoder inputs on the MPU11.
7 Drive Bus Channel encoder 1
8 Drive Bus Channel encoder 2
9 Drive Bus Channel encoder 3
10 Drive Bus Channel encoder 4
11 Drive Bus Channel encoder 5
12 Drive Bus Channel encoder 6
13 Drive Bus Channel encoder 7
14 Drive Bus Channel encoder 8
Encoder inputs on Drive Bus devices.
Here are some examples:
One DC3IOB would occupy 3 Drive Bus Channel encoder locations numbered 7,8,9. Two
DC3IOB’s chained together would occupy 6 Drive Bus Channel encoder locations numbered
7,8,9,10,11,12.
An OPTICDIRECT occupies 1 Drive Bus Channel encoder location. Chaining 8
OPTICDIRECTs together would occupy 8 encoder locations numbered 7-14.
Legacy AC drives (such as SD1 or SD3) occupy 6 encoder locations numbered 7-12.
Note that every Drive Bus device takes up a Drive Bus encoder location even if there is no
encoder going to the drive.
15 MPU11 onboard MPG encoder MPG connector with no index pulse
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