ER-A750 (serv.man3). ERA750 Options Installation Manual - Sharp EPOS Service Manual (repair manual). Page 10

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Auxiliary command
3. [Roll printer (TM-300): by Epson]
1) Data transmission format
– 8bits ASCII code
– No start bit
– Non parity
– One stop bit
– Rate:9600   asynchronous
Their datas are fixed by ECR.
2) Handshaking
– DTR/DSR control
3) Pin-outs
4) Protocol
Dispense coins
Auxiliary command
<cmd><ENQ>
(ECR)
(C/D)
EOT
"C"
<STX> status <ETX><cc>
ACK
NAK
or
<cmd>: " r "=reset
b7
b6
Always
=1
b5
Change
dis-
pensed
=1
b4
Low
coin
alarm
=1
b3
Dis-
pensing
coins
=1
b2
Always
=1
b1
Func-
tion
error
=1
b0
Parity
error
=1
Scale status byte format:
Pin No.
: 1
: 2 RD
: 3 SD
: 4 ER
: 5 GND
: 6 DSR
: 7 RTS
: 8 CTS
: 9
1 F.G
2 TXD
3 RXD
4 RTS
5
6 DSR
7 S.G
20 DTR
(ECR)
Pin No.
:
:
:
:
:
:
(Roll printer)
Connector: D-SUB25
:
:
<STX>XX<ETX><cc>
status
(ECR)
(C/D)
EOT
"C"
ACK
status
NAK
or
XX: ten' s+one' s
<cmd><ENQ>
(ECR)
(C/D)
EOT
"C"
<STX> status <ETX><cc>
ACK
NAK
or
<cmd>: " r "=reset
b7
b6
Always
=1
b5
Change
dis-
pensed
=1
b4
Low
coin
alarm
=1
b3
Dis-
pensing
coins
=1
b2
Always
=1
b1
Func-
tion
error
=1
b0
Parity
error
=1
Scale status byte format:
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