Intermec EasyCoder 501 E – Installation & Operation Ed. 1 145
Appendix 4 Interfaces
"uart3:" Serial Port
The communication port "uart3:" uses a DB-25pin male connector.
Pin Signal Name Description
1 GNDC Cable Shield
2 TXD RS-232 Transmitter
3 RXD RS-232 Receiver
4 RTS RS-232 Request To Send
5 CTS RS-232 Clear To Send
6 DSR RS-232 Data Set Ready
7 GNDI Signal Ground
8 Not connected
9 +20M1 +20 mA current loop
10 -20M1 -20 mA current loop
11 +TXD +TXD 20 mA current loop
12 -TXD -TXD 20 mA current loop
13 +20M2 +20 mA current loop
(printer active receiver)
14 -20M2 -20 mA current loop
(printer active receiver)
15 Not connected
16 +5VEXT 5 VDC for external use (max. 200 mA)
1
17 Not connected
18 +RxD +TXD 20 mA current loop
19 Not connected
20 DTR RS-232 Data Terminal Ready
2
21–24 Not connected
25 -RxD -TXD 20 mA current loop
1
/. Enabled by a strap being fi tted on P-6.
2
/. DTR permanently high.
Refer to the installation instructions for the Serial Interface Board
for further information.
Serial Interface
Board, cont.
"uart3:"
230V
0
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