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Configuring a Controller
78
372 SPU 780 01EMAN May 2002
Remote
Channels
984A-S901, 984B-S901, and 584 controllers only: Select from 2 to 32
remote I/O channels. Channels always come in pairs, so this setting must be
an even number.
Total
Messages
Controllers that support ASCII messaging only: Type the total number of
ASCII messages the controller will use.
Message
Words
Controllers that support ASCII messaging only: Type the length (in machine
words) of your controller’s ASCII messages. One machine word is equal to
two ASCII characters.
ASCII Ports Type the number of ASCII ports on the controller. This setting must be an
even number.
B984
Controller
Select the type of B984 controller you have: B884 or B886.
Input Latched Select this option if you want the controller to freeze the input state on power-
down. Inputs remain frozen for one scan when the controller is powered
back up.
Settling Time Group Settling Time allows you to set parameters for input digital filtering.
Each input value is polled through a filter based on a time window. You
can set the duration of the time window between 200 microseconds and
19.8 ms (in 200 microsecond increments).
The module samples each input every 200 microseconds and uses the
time window associated with the input to determine the input state. If the
scanned input state is OFF, the input state is set OFF. If the scanned
input state is ON, the input state is set based on a history queue. If the
input was ON one time window ago, the input is set ON; if the input was
OFF, the input state is set OFF.
The inputs are divided into four groups. The Settling Time of each can be
configured separately:
Group 1: Inputs 1-4
Group 2: Inputs 5-8
Group 3: Inputs 9-12
Group 4: Inputs 13-16
Battery Coil Type the control address for the controller’s battery.
Timer
Register
Type the register offset used to store the controller’s timer value.
Time of Day
Clock
Type the register offset used to store the controller’s clock value. For more
information see Hardware Clock, p. 152.
Watch Dog
Timer
Type the time-out delay for the Watch Dog Timer, in tens of milliseconds.
The controller adds 250 ms to the value you enter. The default is 0000, which
represents 250 ms.
Parameter Description