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5 In te rf ac es5.1 Serial InterfacesIn te rf ac es • Se ri al In te rf ac es 7RS232The interface cable that comes with the set connectsplug-in connector (11) with the RS232 connection(COM interface of a PC) on the other end. An openendedcable with 5 single wir es is available as an option.TTLFor OEM, a special version with 3.3V TTL levels isavailable.GeBE COMIn this setting, the printer uses the GeBE - Ir pr otocol forcommunicating. The pr otocol can be used thr ough theRS232 as well as the TTL.Thr ough the CRC pr otected transmission blocks, a secure data connection can be r ealized.Also see: Infrar ed InterfacesGeBE-Dok.Nr. MAN-D-394Pin Assignment of the Serial Interface RS232 (V .24) at the Connector (11)Connector at the printer: (5pin). >>> serial cable. The other end has a9 pin SUB-D socket. The assignment is 1:1 matching the serial COM interface of the PC.GCT -437 8/79 -FL ASH 5pinMin i-US B Con nec torPi12345Pin Assignment of the Serial Interface CableCOM Interface PC9p inS UB -DSignalCTSI/OOCommentIf the lev el is log ic-t rue , the con tro lle r can rec eiv e dat a.SignalCTSPin8TxD IPri nt da taTxD 3RxD OErr or me ssa ges and Xon /Xo ff me ssa gesRxD 2VAU X/R TS I/O VP, VC C, or RT S sel ect abl e at the fac tor y thr oug h sol der bri dge s RTS 7GN D sig na l GNDGND signal 5scr 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 = NCTiming of the Serial RS232 /TTL InterfaceThe standar d timing is shown in the diagram.For printers with EEPROM, the data format can be set thr ough the print settings menu.Attent ion : the sta nda rd con figu ratio n has 1 sto pbitAttent ion : the sta nda rd con figu ratio n has no parit ybit"1" (Ma rk)"0" (Sp ace )Sta rtBitLS BMS B0 1 2 3 4 5 6 7Pa rSt opSta rt1 Cha ract er: (1S tart , 8 Dat a, 1 Par ity, 1 Sto p)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" 0" (S p a c e )0V (T T L - l e v e l )+ 3 V . . . + 1 2 VStandar d Data Format• 9,600 baud• 8 data bits• NON parity bit• 1 stop bit• TX line onSelectable Data Formats• 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600 and115,200 baud• 7/8 data bits• odd, even, non parity bit• 1, 2 stop bit• TX line turned ON/OFFGe 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