Intermec EasyCoder 501 – Service Manual Ed. 7
160
Chapter 20 Serial Interface Board
20.3 Connector Confi g-
uration
"uart2:" is a DB-25pin female connector.
"uart3:" is a DB-25pin male connector.
The mounting holes are connected to chassis ground.
Pin "uart2:" "uart3:" Used for: Remarks
DB-25 female DB-25 male "uart2:" "uart3:"
1 GNDC GNDC RS-232 RS-232 Cable shield
2 TXDA TXDB RS-232 RS-232 Transmitted data from printer
3 RXDA RXDB RS-232 RS-232 Received data to printer
4 RTSA RTSB RS-232 RS-232 RTS from printer
5 CTSA CTSB RS-232 RS-232 CTS to printer
6 DSRA DSRB RS-232 RS-232 DSR to printer
7 GNDI GNDI RS-232 RS-232 Signal ground
8 – – – – not used
9 – +20M1 – Current loop + 20 mA
10 – –20M1 – Current loop - 20 mA
11 – +TXD – Current loop TXD +
12 – –TXD – Current loop TXD –
13 – +20M2 – Current loop + 20 mA *
14 – –20M2 – Current loop – 20 mA *
15 – – – – not used
16 – +5VEXT – RS-232/CL + 5V max 200 mA. (if strap fi tted on P-6)
17 – – – – not used
18 – +RXD – Current loop RXD +
19 – – – – not used
20 DTRA DTRB RS-232 RS-232 DTR permanently high
21 – – – – not used
22 – – – – not used
23 – – – – not used
24 – – – – not used
25 – –RXD – Current loop RXD –
*/. In case of printer being active receiver.
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