Read Sharp ER-A490 (serv.man4) Service Manual online
4. Connection between the ECR and Slip
printer: TM-295 (By EPSON)
1. Data transmission format
•
8bits ASCII code
•
No start bit
•
Non parity
•
One stop bit
•
Rate: 9600 asynchronous (PGM programming: #6412, #6552)
2. Handshaking
•
DTR/DSR control
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR : DATA SET READY
RTS : REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS : CLEAR TO SEND
INIT : PRINTER INITIAL
FG : FRAME GROUND
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR : DATA SET READY
RTS : REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS : CLEAR TO SEND
INIT : PRINTER INITIAL
FG : FRAME GROUND
*
NOTE:
•
Slip printer:
Set TM-295 DIP switch to ON for use.
FG
1
R D
TXD
DTR
SD
2
7
20
2
3
7
8
SLIP
25
INIT
RXD
3
RTS
4
DSR
6
SG
4
5
6
ECR
CTS
ER
GND
DSR
INIT
25PIN D-SUB
9PIN D-SUB
1 – 5
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