Citizen Systems CBM-910 manual Description of Input/Output Signal, DTR Data Terminal Ready

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6.3Description of Input/Output Signal

(1)Input signal

1)TD (TRANSMIT DATA)

Serial transmission data signal.

2)RD (RECEIVE DATA) Serial receive data signal.

3)DTR (DATA TERMINAL READY)

Input command or data while this signal is in ready state (space). Data input while the signal is BUSY (mark) will cause an overrun error to occur. Data can be provided to the input buffer even if the printer is printing. Busy state may also occur when power is applied, or during test printing, on-line, or when the printer is reset.

4)RESET (L) (TTL level)

Signal for resetting the whole printer. Reset is activated with L level of 4 ms or more.

5)RESET (RS-232C level)

Signal for resetting the whole printer. Reset is activated with Space of 4 ms or more.

6)FG (FRAME GND) Case ground.

7)GND

Signal ground for the circuit.

(2)Data configuration

Mark

Space

t

b0, b1, b2 • • • • •

(1)

(2)

(3)

(1)Start bit (1 bit)

(2)Data bit (8 bits)

(3)Stop bit (more than 1 bit)

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Contents CBM-910 Type CE Marking Declaration of Conformity Compliance Statements General Precautions Safety Precautions -WHICH should be Strictly Observed Page Precautions for Installation Precautions for Handling Table of Contents External Dimensions Accessories FeaturesIntroduction Type Type ClassificationsAC Adapter CBM-910II-24 CBM-910II-40 SpecificationsExternal Appearance External Appearance and Part DescriptionsOFF Part DescriptionsConnection of the AC Adapter OperationsSetting of the Printer Cover Setting Ribbon Cassettes Setting Paper Special Remarks Concerning Paper Self-Printing Function Japan 910JPN Memory Switch SettingUSA = U.S.A Paper-Near-End, Mechanical Alarm, Memory Error General Remarks Pin Signal Name Connector Pin AssignmentParallel Interface Description of Input/Output Signals Electrical Characteristics Serial Interface Host-Printer Pin Signal Name Signal Direction Function RS-232CDTR Data Terminal Ready Description of Input/Output SignalTTL circuit Input Reset Receiving Control and Buffering Error DetectionSwitch No Parity Baud Rate Factory Setting DIP Switch SettingSwitch No Function Factory SettingParallel Interface Type Print Control Function Symbol Code Function CBM910 IDP3110 HexadecimalList of Control Codes Control Code Details Abcd Page Character Code Table CountryESC Page FF FF FF FF FF FF For 40-column model 3110 emulation Page Model 123 CR Function Content of Setting Ascii + 910 Emulation International 910 Emulation Japan Character Code TableCodepage PC437 USA, Standard Europe Katakana Codepage PC858 Multilingual Codepage PC860 Portuguese Codepage PC863 Canadian-French Codepage PC865 Nordic Codepage PC852 Eastern Europe Codepage PC866 Russian Codepage PC857 Turkish Codepage WPC1252 Windows Latin1 Codepage PC864 Arabic Codepage PC869 Greek International Character Code Table External Dimensions Page