PRODUCT MANUAL
Power-up Response:
Upon power up, the unit will show the last value displayed before shipping. A
battery back-up circuit retains the pre-loaded information. Unit will power up
incrementing once per second. See Appendix E for details on protocol.
Addressing:
1200; no parity; 8 data bits; 1 stop bit. Set to address 01.
Protocol:
See Appendix E
Keyboard Input:
APPENDIX E:
COMMON ASCII CHARACTERS:
All messages to these displays are made up of combinations of standard ASCII
characters. The 16-key keypad supplied by Electronic Displays, Inc on the
remote control panel generates one character per key.
ASCII
CODE
KEYPAD
LABEL
VALUE
(decimal)
FUNCTION
STX
A
2
‘Start of text’, also known as a ‘Control
B’, this character must be the first
character of each message
ETX
D
3
‘End of text’, also known as a ‘Control
C’.
LF
B
10
‘Line Feed’, also known as a ‘Control
J’, this character is used as the last
character of some ‘setup’ messages.
CR
C
13
‘Carriage Return’, also known as a
‘Control M’ and as ‘Enter’, this
character is also used as the last
character of some ‘setup’ messages.
0
thru
9
0
thru
9
48
thru
57
These are the standard ASCII
‘printable’ decimal digit characters.
They are used as both ‘address’
characters and ‘data’ characters.
Variable Rate Timer Display:
This display is capable of receiving three types of messages.
