The bridges between 1,7 and 8 can be omitted if the receiving soft-
ware ignores the CTS and DCD signals.
2. Other EDP units (acc. to DIN 66020)
Reflotron Plus Computer
(DB-25 plug) (DB-25 plug)
GND 1 1 GND (protective)
TD 2 2 TD
RD 3 3 RD
RTS 4 4 RTS
CTS 5 5 CTS
DSR 6 6 DSR
DTR 20 20 DTR
GND 7 7 GND (signal)
The following settings are predetermined by the software:
● BAUD RATE: 300–9600
● STOP BITS: 1 2
● PARITY: NONE ODD EVEN
● STX/ETX*: NO YES
● BCC**: NONE EVEN ODD
For the settings see “Basic instrument settings” in this Section.
* If Start of TeXt/End of TeXt is selected, the above records look as
follows:
STX (02 hex)
Record
ETX (03 hex)
** When using an STX/ETX frame, an additional BCC (Block-Check-
Character) may be sent (DIN 66219) to improve data security.
The modulo-2 sum after STX up to and including ETX must be
0 with EVEN and 255 with ODD.
The word length is 8 bits.
The character set corresponds to the standard ASCII character set
by IBM.
6.13
Interface configuration
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