Specifications
70
TTPM3 Printer/Encoder–Technical Manual
0705
9 SPECIFICATIONS
9.1 Interface
description
The TTPM3 communicates through an RS232 serial interface.
9.1.1 Setup
options
Baud:
2 400, 4 800, 9 600, 19 200, 38 400, 57 600, and
115 200
bits/s
Flow control:
None, Xon / Xoff, or
Hardware
Data bits:
8 (fixed)
Stop bits:
1 (fixed)
Parity:
None
, Odd, or Even
Default settings: 115200 bits/s, 8-bits, No parity, 1 stop bit, and hardware flow control.
See also: Default parameter settings on page 25
9.1.2 Communications
protocol
The protocol is 8 data bits, 1 stop bit, and no parity. Handshaking is DIP-switch-
selectable, either or RTS/CTS or XON/XOFF (parameter n4).
Recommendation –
Use RTS/CTS hardware handshake (parameter n4=2) and
ACK/NAK + error code enabled (parameter n5=0)
9.1.3 Communications
cable
Use a 9-pin serial cable to connect the TTPM3 printer to the host computer.
Such a cable is available from Swecoin. Part number 10825-000. The cable is 1.5 m long
with 9-pole D-sub connectors at both ends (PC and TTPM3).
Printer
PC
Female
5
9
4
8
3
7
2
6
1
Female
5
9
4
8
3
7
2
6
1
2
RxD
RxD
2
3
TxD
TxD
3
9
RI
RI
9
6
DSR
DSR
6
8
CTS
CTS
8
4
DTR
DTR
4
7
RTS
RTS
7
1
DCD
DCD
1
5
GND
GND
5
Serial Cable 10825-000
Figure 3. Serial connector pin assignment
NOTE! —
This cable is
not
connected as a standard null-modem cable.
So we recommend you to use the original cable from Swecoin
or manufacture a cable according to the above drawing.
If you use a null-modem cable, you will lose data in the
transfer to the printer.
Specification subject to changes without notice.