Setup guide

Chapter 3 Driver and Protocol Objects
Object Reference Manual 3-12 www.Automationdirect.com
C:0_OV -
C255:255_OV
logical yes yes Counter overflow bit.
C:0_UA -
C255:255_UA
logical yes yes Counter update accumulation bit
(HSC in fixed controller only)
C:0_UN -
C255:255_UN
logical yes yes Counter underflow bit.
C:0_CD -C255:255_CD logical yes yes Counter down-enable bit.
CommFail logical yes no Object-generated signal that is ON if,
for any reason, LookoutDirect cannot
communicate with the SLC.
F:0-F255:255 numeric yes yes Floating point value
I:0 - I:30 numeric yes yes Unsigned 16-bit input value ranging
from 0 to 65,535
I:0_0 - I:30_15 logical yes yes One bit within a 16-bit input word
N:0 - N255:255 numeric yes yes 16-bit signed integer value ranging
from –32,768 to +32,767.
N:0_0 - N255:255_15 logical yes yes One bit within a 16-bit signed integer
word
O:0 - O:30 numeric yes yes Unsigned 16-bit output value ranging
from 0 to 65,535
O:0_0 - O:30_15 logical yes yes One bit within a 16-bit output word
OffHook logical no yes When true, instructs the PLC to retain
exclusive use of its assigned
communication port. This prevents
Lookout
Direct
from hanging up
between polls, saving the redial
overhead. This also prevents other
blocks from communicating over the
same channel.
Poll logical no yes When transitioned from false to true,
the Lookout
Direct
object polls the
SLC device
Table 3-3. AB_SLC500 Data Members (Continued)
Data Member Type Read Write Description