
0309 TTPM2 Technical Specification 9
1.2.2 Communications cable
Pin Function
2 RXD (Receive data)
3 TXD (Transmit data)
4 DTR (Data terminal ready)
5 Ground
7 RTS (Request to send)
8 CTS (Clear to send)
Figure 6. RS232 serial interface connector pin assignment
A serial communications cable is available from Swecoin. See ordering information on
page 32. The cable is 1.5 m long with 9-pole D-sub connectors at both ends.
9-pole to 25-pole D-sub adapters are commercially available.
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