35
S280-77-4
!
SAFETY
FOR LIFE
Digital Communications (cont’d)
Security
Limits
Access
Factory
Code
Write
Read
Scroll
High
Low
Incr
Parameter
Settings
85
0
0
NO
425
0
1
Communications Port Transmit
50
Enable Delay (mS)
•
Defines the delay after the Transmit Enable signal is
sent by the Form 4C control and before the trans-
mission of the message. This allows for stabilization
of the transmitter hardware before the message is
actually sent.
•
The value entered specifies the number of millisec-
onds that elapse before transmission begins. When a
modem interface is used, a delay of 50 milliseconds is
recommended. See Figure 7 under access Code 83.
•
Select Auto Time-Tagged Reset ON or OFF using
the CHANGE key.
•
ON position reports only data that occurred since the
last time the event recorder or load profile was
polled.
•
OFF position reports the entire content of the event
recorder and load profile regardless of the data pre-
viously downloaded.
•
This change affects Protocol 2179 only through the
communication serial port. This has no effect on the
time-tagged buffers addressed by the front panel, via
Code 161 (scroll) or via the Data Port (DB9).
•
Reset via SCADA enabled if
1) At least one event previously logged with Code
86 off,
AND
2) Code 86 is now one,
AND
3)
a) The Supervisory Switch is ON
AND/OR
b) Code 77 is CPU Firmware Revision number
is 14 or higher.
Security
Limits
Access
Factory
Code
Write
Read
Scroll
High
Low
Incr
Parameter
Settings
86
0
0
NO
--
--
--
Auto Time-Tagged Reset (ON/OFF)
(communications port buffer clear)
ON