Epson EPL-N1200 Service Manual - Page 30

Optional Serial Interface LocalTalk/Serial Module - epl 1200

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General Description EPL-N1200 Service Manual 1.3.2 Optional Serial Interface (LocalTalk/Serial Module) The optional LocalTalk/Serial module contains serial interface with the following characteristics. Type: RS-232C or current loop Transfer system: Synchronization: Full duplex Asynchronous start-stop system Start-bit: 1 bit Stop-bit: 1 or 2 bits Data length: 7 bits or 8 bits Parity: Odd, even, or none Protocol: X-ON/X-OFF (can be combined with DTR control) DTR control (can be combined with X-ON/X-OFF) Transfer speed: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 BPS Note 1: For RS-232C signal level, speeds of 38400 BPS and above place restrictions on the host computer, cable, and other operating conditions. Note 2 For current loop signal level, speeds of 2400 BPS and above place restrictions on the host computer, cable, and other operationg conditions. Error: Applicable plug Overrun error: Processed as missing data and replaced by "*" Parity error: Replaced by "*" Framing error: Replaced by "*" Breaking character: Ignored Circular miniature DIN 8-pin plug Signal Level (EIA BASED) : TXD, DTR Out put Voltage (VOH) 5 to 15 V (VOL) -5 to -15 V Open circuit voltage (VO) within +15 V Impedance with power off (rO) 300 ohms (MIN.) Load capacitance (CL) 2500 pF (MAX.) Through rate 30 V/u SEC (MAX.) Load resistance (Lo) 3 K to 7 K ohms RXD, CTS Input Voltage Input signal range Input impedance Imput current Open-circuit input voltage (VIH) (VIL) (RI) (II) (EL) 3 V (MIN.) -5 V (MIN.)*1) +25 V (MAX.)*1) 3 K to 7 K ohms + 8 mA (MAX)*1) -2 V (MAX>)*1) Note : Annotations "MIN". and "MAX." apply to absolute values. Signal descriptions: See Table 1-10. 1-18 Rev. A

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1.3.2
Optional Serial Interface (LocalTalk/Serial Module)
The optional LocalTalk/Serial module contains serial interface with the following characteristics.
Type:
RS-232C or current loop
Transfer system:
Full duplex
Synchronization:
Asynchronous start-stop system
Start-bit:
1 bit
Stop-bit:
1 or 2 bits
Data length:
7 bits or 8 bits
Parity:
Odd, even, or none
Protocol:
X-ON/X-OFF (can be combined with DTR control)
DTR control (can be combined with X-ON/X-OFF)
Transfer speed:
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 BPS
Note 1:
For RS-232C signal level, speeds of 38400 BPS and above place restrictions on the host
computer, cable, and other operating conditions.
Note 2
For current loop signal level, speeds of 2400 BPS and above place restrictions on the
host computer, cable, and other operationg conditions.
Error:
Overrun error:
Processed as missing data and replaced by “*”
Parity error:
Replaced by “*”
Framing error:
Replaced by “*”
Breaking character:
Ignored
Applicable plug
Circular miniature DIN 8-pin plug
Signal Level
(EIA BASED) :
TXD, DTR
Out put Voltage
(VOH)
5 to 15 V
(VOL)
-5 to -15 V
Open circuit voltage
(VO)
within
+15 V
Impedance with power off
(rO)
300 ohms (MIN.)
Load capacitance
(CL)
2500 pF (MAX.)
Through rate
30 V/u SEC (MAX.)
Load resistance
(Lo)
3 K to 7 K ohms
RXD, CTS
Input Voltage
(VIH)
3 V (MIN.)
(VIL)
-5 V (MIN.)*1)
Input signal range
+25 V (MAX.)*1)
Input impedance
(RI)
3 K to 7 K ohms
Imput current
(II)
+ 8 mA (MAX)*1)
Open-circuit input voltage
(EL)
-2 V (MAX>)*1)
Note :
Annotations “MIN”. and “MAX.” apply to absolute values.
Signal descriptions:
See Table 1-10.
General Description
EPL-N1200 Service Manual
1-18
Rev. A