46020-38-0299 <90-00029>
P
AGE
7
F
IG
. 4 - M
AXIMUM
C
ABLE
L
ENGTHS
FOR
D
ATA
T
RANSMISSION
I
NTERFACES
40
RS232
RS422 BALANCED
RS423 UNBALANCED
100
1
10K
100K
1M
10M
10K
4K
1K
100
50
10
CABLE LENGTH (FEET)
DATA MODULATION RATE (BAUDS)
B
ATTERY
B
ACKUP
The MAP has a battery backup to preserve the system configu-
ration information that has been placed in memory. You can set
switches on the MAP to retain the information in memory, even
if the power to the MAP is interrupted. If you do not set the
switches to retain the memorys contents, configuration informa-
tion is erased when the power is restored. To learn how to set
these switches, refer to the
Switch Settings
chapter.
R
ESET
On the front panel of the MAP, there is a recessed reset button.
When you push this button, it executes a complete, or hard,
reset. The effect is the same as removing power from the MAP.
When power is restored later, the information in the MAPs
memory is saved ...
only
if you have set the switches to retain it
(see Battery Backup paragraph). If you have not set the
switches to save the memory, it will be erased.
The MAP also has a protective (watchdog) circuit. If the
software encounters a problem and is unable to refresh the
protective circuit, a complete reset automatically occurs after 1.2
seconds.
GENERAL DESCRIPTION
