Section 5: Interface Specifications
Page 5-8 LM Basic 408e/412e Operator’s Manual
5.10 X-ON/X-OFF
This transmission protocol informs the host if the printer can receive data or not, by sending the
"XON" (Hex 11H) or "XOFF" (Hex 13H) code.
Data received cannot be guaranteed, when print data (ESC+"A"~ESC+"Z") is sent from the host,
under the following conditions:
1) When the printer is Offline
2) When an error has occurred in the printer
Pin Assignments
Caution!
In the connections, it may be necessary to loop (usually kept "High”) CS and RS on the host side
depending on the type of host. Therefore, make sure to re-check the host before use.
Input/Output Signals
1) DB-25 P DB-25 P 2) DB-9P DB-9P
Printer Host Printer Host
FG 1 1 FG FG 1
SD 2 3 RD SD 2 2 RD
RD 3 2 SD RD 3 3 SD
RS 4 5 CS RS 4 8 CS
CS 5 4 RS CS 5 7 RS
DR 6 20 ER DR 6 4 ER
SG 7 7 SG SG 7 5 SG
ER 20 8 DR ER 20 6
AR
Pin no. Signal Type Direction Contents
1 FG - Frame Ground
2 SD Output Send Data
3 RD Input Receive Data
7 SG - Signal Ground
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