Setup guide

Chapter 3 Driver and Protocol Objects
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Automationdirect.com 3-11 Object Reference Manual
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 LookoutDirect object polls the
PLC device
PollRate numeric no yes Specifies the frequency at which the
Lookout
Direct
object polls the PLC
device
Update logical yes no Object-generated signal that pulses
each time the object polls the device
Table 3-3. AB_SLC500 Data Members
Data Member Type Read Write Description
B:0 - B255:255 numeric yes yes 16-bit signed binary word ranging
from –32,768 to +32,767
B:0_0-B255:255_15 logical yes yes One bit within a 16-bit binary word
B_0 - B255_4095 logical yes yes One bit within the specified datafile.
For example, B3_32 specifies datafile
3, word 2, bit 1.
C:0.ACC -
C255:255.ACC
numeric yes yes Counter accumulated value. Two-byte
signed word ranging from –32,768 to
+32,767
C:0.PRE -
C255:255.PRE
numeric yes yes Preset counter value. Two-byte signed
word ranging from –32,768 to +32,767
C:0_CU - C255:255_CU logical yes yes Counter up-enable bit.
C:0_DN -
C:255:255_DN
logical yes yes Counter done bit.
Table 3-2. AB_PLC2 Data Members (Continued)
Data Member Type Read Write Description