Star Micronics LS-5 SERIES, Technical Manual

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GENERAL SPECIFICATIONS
2. Pin Functions on Interfaces
2-1. Parallel Interface
Pin No.
Signal
Direction Function
Name
1 STROBE IN Goes from High to Low (for at least 0.5 microseconds) when data are valid.
2 DATA1 IN
3 DATA2 IN
4 DATA3 IN
5 DATA4 IN
6 DATA5 IN
7 DATA6 IN
8 DATA7 IN
9 DATA8 IN
10 ACK OUT A low pulse acknowledges receipt of data.
11 BUSY OUT Low when the printer is ready to receive data.
12 PAPER OUT OUT Goes High if the printer runs out of paper.
13 SELECTED OUT High when the printer is online.
14-15 N/C Unused
16 SIGNAL GND Signal ground
17 CHASSIS GND Printer’s chassis ground, isolated from signal ground.
18 +5VDC OUT External supply of +5VDC
19-30 GND Twisted pair return signal ground level.
31 PRIM IN LS-5 model does not check this signal.
LS-5EX and TT are not connected.
32 FAULT OUT Goes Low to signal that the printer cannot print due to an error condition.
33-36 N/C Unused. In case of LS-5 model, pin no. 33 and 35 are always HIGH.
2-2. Serial Interface
Pin No.
Signal
Direction Interface Function
Name
1 GND 232C/422A Chassis ground
2 TXD OUT RS-232C Transmitted data
3 RXD IN RS-232C Received data
RXD– IN RS-422A Received data–
4 RTS OUT RS-232C SPACE when the printer is ready to receive data.
But this printer does not check the signal.
5-6 N/C Unused
7 GND 232C/422A Signal Ground
8 N/C Unused
9 TXD+ OUT RS-422A Transmitted data+
10 TXD– OUT RS-422A Transmitted data–
11-17 N/C Unused
18 RXD+ IN RS-422A Received data+
19 N/C Unused
20 DTR OUT RS-232C SPACE when the printer is ready to receive data.
21-25 N/C Unused
2-3. AppleTalk Interface
Pin No.
Signal
Direction Function
Name
1 HSKo OUT Handshake out (always GND)
2 HSKi IN Handshake in
3 TXD– OUT Transmitted data –
4 GND Signal ground
5 RXD– IN Received data –
6 TXD+ OUT Transmitted data +
7 N/C Unused
8 RXD+ IN Received data +
Eight-bit character data. DATA8 is the most significant bit; DATA1 is the least significant bit.
High is logic 1 and low is logic 0.