Honeywell UDC3300 Product Manual page 51

4.5 Communications Set Up Group,
Communications
group prompts,
continued
Table 4-4 Communications Group Definitions, Continued
Lower Display
Prompt
DUPLEX
(RS422/485 only)
TX DELAY
(RS422/485 only)
LOOPBACK
UNITS
1/01
Upper Display
Range of Setting
or Selection
HALF
FULL
1 to 500 milliseconds
ENABLE
DISABL
PERCNT
ENG
UDC3300 Limit Controller Product Manual
Continued
Parameter
Definition
DUPLEX —Transmission Type
HALF DUPLEX—Two wires
FULL DUPLEX—Four wires
TX DELAY—Configurable response-delay timer allows
you to force the UDC to delay its response for a time
period of from 1 to 500 milliseconds compatible with the
host system hardware/software.
LOCAL LOOPBACK tests the communications hardware.
ENABLE—Allows loopback test. The UDC goes into
Loopback mode in which it sends and receives its own
message. The UDC displays "PASS" or "FAIL" in the
upper display and "LOOPTEST" in the lower display as
long as the test is running. The UDC will go into manual
mode. The test will run until the operator disables it here.
DISABLE—disables the Loopback test.
COMMUNICATION UNITS—This selection determines
how the controller values are expressed during
communications.
PERCENT OF SPAN
ENGINEERING UNITS
41