Connector Confi Guration - Intermec EasyCoder 501 Service Manual

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