Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS User Manual

Page 90

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Formatting and Interpreting Data Blocks

Chapter 7

7Ć8

The processor must not transfer the command or moveset blocks to the
servo controller until the ready bit is on.

Bit 3 Hardware Jog + (Hardware Start)

The 1771-M3 controller turns on this bit when the 1771-ES expander
recognizes a jog plus or hardware start input signal.

Bit 4 Slide Stop

The 1771-M3 controller turns on this bit when it receives a slide-stop
request from the command block (word 1, bit 5). The slide stop status bit
stays on even after the slide-stop command is no longer present in the
command block. This bit turns off when you command axis motion or
reset. A reset command while the axis is in motion will also turn on this
bit and cause a slide stop. When the axis stops, this bit turns off.

Bit 5 Hardware Jog Ć (Feedrate Override Enable)

The 1771-M3 controller turns on this bit when the 1771-ES expander
recognizes a jog minus or feedrate override enable input signal.

Bit 6 Home

The 1771-M3 controller turns on this bit when the axis feed is done after
any command to move to the home position, if you have established a
home position. You establish a home position through an initialize home,
or search home command. This bit turns off when the axis moves away
from the home position.

Bit 7 Auto/Manual

This bit indicates the current mode of the axis, based on the status of the
auto/manual bit (word 1, bit 7) in the command block (1=auto,
0=manual).

Bit 10 Immediate Stop

When this bit is on it indicates that the 1771-ES expander is holding its
analog output signal at zero and is disabling the servo drive through its
drive disable output. You can clear this immediate stop condition through
a reset command or by cycling I/O chassis backplane power off, then on.
Commands and events that can cause the immediate stop condition are:

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