Setup guide

Chapter 3 Driver and Protocol Objects
Object Reference Manual 3-4 www.Automationdirect.com
Retry attempts specifies the consecutive number of times Lookout
Direct
attempts to establish communications with a device if it is not getting a
valid response. After it tries the number of Retry attempts specified, the
object generates an alarm and begins to Skip every n poll requests after
comm failure. Once Lookout
Direct
reestablishes communications, it polls
the device on its regular cycle, as defined by PollRate.
Receive timeout is the time delay Lookout
Direct
waits for a response from
a device before retrying the poll request.
Interface identifies the type of communication hardware you are using.
The selection you make here determines what protocol parameters you
have to specify. The paragraphs that follow describe interface-specific
protocol parameters.
Allen-Bradley Serial Port Interface Parameters
The KE/KF/Serial Interface selection enables serial port
communication via a KE card, a KF3 module or KF2 module. When
using your serial port, Lookout
Direct
employs the Allen-Bradley
full-duplex (peer-to-peer) DF1 protocol. Figure shows an Allen
Bradley object configured for serial communications.
Serial port specifies which RS-232C port the object uses for
communication to the physical device.
Data rate, Parity, and Error detection reference the settings on the
hardware device. The AB object classes support both BCC (block check
character) and CRC (cyclic redundancy check) error detection. BCC
provides a medium level of data security. CRC ensures a higher level of
data security. Choose the settings as configured on your PLC or SLC.
Phone number specifies the number to be dialed if the serial port setting
is configured for dial-up. This number only applies to the individual object.