Revised May 1, 2019
Revision 25 of DOCU225, © Copyright
Page 14 of 44
4 Setting Up WITS in the EDR
After connecting the hardware, you need to use the EDR to set up WITS communication.
Set up procedures vary depending on whether you connected the WITS device to the
EDR via a comm box or via a Workstation, DHC, or SideKick. The following sections
describe the required procedures.
4.1 Set up on UJB
If connecting to a UJB, ensure the port is set to WITS. This requires UJB firmware
version 11 or higher. Select
Setup Ports
>
Change to WITS
from the UJB local
interface. Then select either
WITS 9600
or
WITS 19200
.
4.2 About Handshaking
Setting up and maintaining WITS communication between a WITS device and the EDR
requires the use of a handshake. The handshake is important because it prompts the
EDR to recognize that a WITS device has been connected to the system, and is
necessary for the EDR to keep WITS communication active. If you connected the WITS
device via a toolpush connection box or a network panel, handshaking also prompts the
EDR to display a WITS protocol in the Comm Port Setup screen, so handshaking is
useful for determining which ports are connected to WITS devices.
Important:
Failure to continuously send at least one packet to the EDR every 30 seconds causes the EDR’s
communication engine to time out, stopping WITS communication. This is a major cause of WITS
communication problems.
Establishing and Maintaining WITS Communication
To establish and maintain WITS communication with the EDR, the third-party WITS
device must send at least one WITS packet to the EDR continuously every 30 seconds,
even if the third-party has no other need to send WITS packets
. The only exception to
this requirement is when the WITS device is connected via a toolpush connection box or
a network panel, and the EDR comm port is set to Send Only. This requirement can be
met in one of the following two ways:
•
The third-party WITS device continuously sends at least one WITS packet to the
EDR every 30 seconds as part of the desired operation, or
