Rockwell Automation 8720MC Drives Integration Manual User Manual

Page 79

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Publication 8720MC-IN002A-EN-P — December 2002

SCANport Command Interface

4-5

Jog Request - If the drive is stopped (disabled via bit 00 of the
command word) and the jog command bit is set true (rising edge) and
there are no faults, the drive will assert the jog reference enabled state
and follow SCANport jog reference command on SCANport adapter
Input Word 2.

The drive will continue to follow the jog reference until the jog is
released. It will then regenerate to a stop.

The manual reference request, bit 11 of the SCANport Logic Command
Word, does not need to be asserted. This will automatically occur
when the jog bit 02 is set.

Fault Clear - If a drive shut down fault has occurred setting the
Drive_Err_Reset bit is required in order to reset the drive shut down
error. The fault cannot be reset unless the fault condition is removed.

Coast Stop Request - If the drive is running and the Coast Stop
Request bit is set the drive power will be removed from the motor and
it will not regenerate. Under this condition the motor will coast until
the friction of the motor and load bring it to a stop.

Refer to the tables below for SCANport I/O key logic commands.

SCANport Input Command Word

SCANport Output Status Word

Bit

Description

Bit

Description

00

Regenerative Stop Request

00

Drive Enabled

01

Start Request

01

Auto Reference Enabled

02

Jog Request

02

Rotation Direction

03

Fault Clear

03

Drive OK

04

Coast Stop Request

04

At Zero Speed

05

Parameter Set Select bit 0

05

At Reference Speed

06

Parameter Set Select bit 1

06

Orient complete

07

Parameter Set Select bit 2

07

Reserved

08

Parameter Strobe

08

Brake Solenoid enabled

09

Orient Request

09

Torque greater than Torque Limit

10

Home Request

10

High Winding Selected

11

Manual Reference Select

11

Low Winding Selected

12

Reserved

12

Shut Down Fault

13

Reserved

13

Reserved

14

Reserved

14

Reserved

15

Reserved

15

Manual Reference Selected

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