Figure 1-10. Serial Data Transmission Timing; Figure 1-11. Serial Interface Connector - Epson LQ-2550 Technical Manual

REV.-A
Data Transmission Timing
( +V)
NOTES: 1. The value of "T" varies according to the input data.
2. The word structure of serial data is 1 start bit + 8 data bits + parity (Odd, Even, or none)
+ 1
or more stop bits.
Error Detection
Connector
Connector Pin Assignments
1-10.
See Figure
1
– " 'IIM!l!m
-v]
D a t a Blt

Figure 1-10. Serial Data Transmission Timing

Parity error: "*" is printed.
Overrun error: Ignored
Framing error: Ignored
D-SUB 25-pin connector (See Figure 1-1 1.)
Refer to Table 1-15.
1. CHA5.51S GND

Figure 1-11. Serial Interface Connector

stop
Data Bit
Handshake
34. Nc
19. NC
1-18
. . . ~
"
...
,'
.