In te rf ac es • Se ri al In te rf ac es
7
Pin Assignment of the Serial Interface RS232 (V .24) at the Connector (11)
Connector at the printer: (5pin). >>> serial cable. The other end has a
9 pin SUB-D socket. The assignment is 1:1 matching the serial COM interface of the PC.
GCT -437 8/79 -FL ASH 5pin
Min i-US B Con nec tor
Pin Assignment of the Serial Interface Cable
COM Interface PC
9p inS UB -D
Pi
1
Signal
CTS
I/O
O
Comment
If the lev el is log ic-t rue , the con tro lle r can rec eiv e dat a.
Signal
CTS
Pin
8
2
3
4
5
TxD
RxD
I
O
VAU X/R TS
GN D sig na l
I/O
GND
Pri nt da ta
Err or me ssa ges and Xon /Xo ff me ssa ges
TxD
RxD
VP, VC C, or RT S sel ect abl e at the fac tor y thr oug h sol der bri dge s
RTS
GND signal
3
2
7
5
scr ee n
At the con tro lle r, scre en is con nec ted to GN DF (fra me gro und )
scr ee n
1,4 ,6,9 = NC
RS232
The interface cable that comes with the set connects
plug-in connector (11) with the RS232 connection
(COM interface of a PC) on the other end. An open-
ended cable with 5 single wir es is available as an opti-
on.
TTL
For OEM, a special version with 3.3V TTL levels is
available.
GeBE COM
In this setting, the printer uses the GeBE - Ir pr otocol for
communicating. The pr otocol can be used thr ough the
RS232 as well as the TTL.
Thr ough the CRC pr otected transmission blocks, a secu-
r e data connection can be r ealized.
Also see: Infrar ed Interfaces
GeBE-Dok.Nr. MAN-D-394
5 In te rf ac es
5.1 Serial Interfaces
Timing of the Serial RS232 /TTL Interface
The standar d timing is shown in the diagram.
For printers with EEPROM, the data format can be set thr ough the print settings menu.
LS B
MS B
Sta rt
St op
Pa r
Sta rt
0
1
2
3
4
5
6
7
Bit
1 Cha ract er: (1S tart , 8 Dat a, 1 Par ity, 1 Sto p)
"1" (Ma rk)
"0" (Sp ace )
Attent ion
: the sta nda rd con figu ratio n has no parit ybit
Attent ion
: the sta nda rd con figu ratio n has 1 sto pbit
S i g n a l
L e v e l o n T T L i n te r f a c e
L e v e l o n R S - 232 i n te r f a c e
" 1" (M a r k )
+5 V (T T L - l e v e l )
- 3 V . . . - 1 2 V
0V (T T L - l e v e l )
+ 3 V . . . + 1 2 V
" 0" (S p a c e )
Standar d Data Format
• 9,600 baud
• 8 data bits
• NON parity bit
• 1 stop bit
• TX line on
Selectable Data Formats
• 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600 and
115,200 baud
• 7/8 data bits
• odd, even, non parity bit
• 1, 2 stop bit
• TX line turned ON/OFF
Ge BE E + F Gm bH • ww w .oe m- pri nte r .co m • SM AN -E- 471 -V2 .3 • The rm al Pri nte r GPT -43 78 / 437 9
