Rockwell Automation 1771-QB Linear Pos. - Manual (Page 116)

Formatting Module Data (WRITES)
Chapter 7
7Ć37
Bit 8 – Immediate Stop
Setting the immediate stop bit causes the module to immediately set the analog
output to zero and turn on OUTPUT 2 if it is configured as the loop fault
output. To recover from an immediate stop condition, either issue a reset
command or turn the I/O chassis power off and then back on. The following
rules govern the immediate stop command:
the module recognizes an immediate stop command in either auto or manual
mode
immediate stop commands have priority over slide stop, setpoint, or jog
commands
Bit 9 – Reset
Setting the reset bit reinitializes the loop to powerup state. The module
recognizes a reset command in either auto or manual mode. Reset commands
have priority over setpoint or jog commands.
If the axis is in motion when this command is issued, the axis stops at the
current deceleration rate. After the axis stops, the reset command is
acknowledged through the status block (ready bit).
The reset command is similar to powerup. The module disables the axis until a
new parameter block is received. However, unlike powerup, the other axis isn’t
affected.
If the discrete outputs, OUTPUT 1 and OUTPUT 2, are configured as
programmable, resetting the module with the reset bit will not change the
programmed configuration of those outputs. (See Chapter 9.)
Bits 10 – Integral Disable
To disable integral control, set bit 10 high. When integral control is disabled, the
value of the integral term is maintained at the value it was prior to disabling,
and integral windup does not occur. When integral control is re-enabled (set bit
10 low), the integral term behaves as it did prior to being disabled.
Bit 11 – Reserved
Bit 11 is reserved for future use. The PLC program must set it to zero.