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NOTE
: 4 digit version does
not have 2 left hand
characters.
Baud RATE
Recognition ADDRESS
Input Signal LEVEL
Operating MODE
PARITY
Number of BITS
Polarity
indicator
Overload
indicator
7 6
5
4
3
2
1
Character 1, Baud RATE
displayed will be a number from 0 to 7. Factory default is 3 (1200 baud).
Character 2, Recognition ADDRESS
: The ADDRESS displayed will be 0 by default (30h) or one of 31 other numeric
and alphanumeric characters from 1 through to letter O. See Table of Characters.
Character 3, Input Signal LEVEL
, will show a symbol "
L
" for a correct idle condition or a symbol "
H
" for an incorrect
idle condition. For RS485 signals, ensures the transmitter is in active driving condition, since a 485 driver in a receive
condition may give a correct idle indication even if the signal wires are transposed.
Character 4, Operating MODE
displayed will be "
F
"
for shift mode, or "
r
"
for strobe mode, which is the factory default.
Character 5, PARITY
will show the symbol "
I
", by default, which means "Ignored" or one of the following characters
; "
n
" for none, "
o
" for Odd and "
E
" for Even.
Character 6
, Number of BITS displayed will be 7 for seven bits or 8 for eight bits.
Character 7
, will show the Polarity indication.
After 3 seconds of power-up the display will shown "- - - - - - -", (all middle bar and polarity indicator is light-up)
it means that the instrument is ready to receive data, and all printable characters received (20, 2B, 2D, 2E and
30 to 5F) will be displayed directly if the instrument is programmed in shift mode or after receiving the code 0D
in strobe mode.
It is convenient in this moment and before starting the addressing mode, to send a character XOFF or ETX to
clear the internal buffer from uindesirable data. (XOFF recommended).
7.2.- OPERATING MODES
The following serial ASCII protocols are DIP switch selectable :
Mode 0 : Each printable character as it is received is placed in the least significant position and all characters are
shifted left one position. Following a carriage return character, the next valid character received causes
the display to clear and that character is placed in the least significant position. (If it is a printable character)
Mode 1 : Printable characters are placed in a buffer on reception. Receipt of the carriage return character causes
the buffer contents to be transferred to the display.
7.- OPERATING DESCRIPTION
7.1.- POWER-UP
Having determined that the unit has been configured for the correct input signal, connect the mains plug to a
suitable AC power source and the signal input to the signal source.
Ensure that the source is an idle condition, i.e. not transmitting data, and switch on the mains power.
The unit will power-up displaying its recognition address, its baud rate, the condition at the signal input, its
operating mode, the parity and bits number.
The display will be as follows :