Intermec EasyCoder F4 – Installation & Operation Ed. 3
108
Appendix 3 Interfaces
"uart3:" Serial Port
The communication ports "uart3:" uses a DB-25pin male connec-
tor.
Pin
Signal Name
Description
1
Not
connected
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
GND
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
+RS422I
+RS-422
Receive
16
+5V
5 Volt for external use (max. 200 mA)
1
17
-RS422I
-RS-422
Receive
18
+RxD
+TXD 20 mA current loop
19
+RS422O
+RS-422
Transmit
20
DTR
RS 232 Data Terminal Ready
21
-RS422O
-RS-422
Transmit
22
RI
RS-232 Ring Indicator
23
Shield
Optional shield for RS-422
24
Not
connected
25
-RxD
-TXD 20 mA current loop
1
/. The external 5V is automatically switched off at overload.
Double Serial
Interface Board,
cont.
"uart3:"
Содержание EasyCoder F4
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