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UBI EasyCoder 501 – Technical Manual
INTERFACES
Communication Port
"uart1:"
All EasyCoder 501 printers are fitted with a DB25 male interface
connector on their rear plates (comm. port "uart1:"). This connector
can be used for an RS 232C, an RS 422, or a 20 mA current loop
interface depending on how the CPU board is strapped. In the latter
two cases, additional circuits must be fitted. The configuration of
the connection cable is also important.
If the printer is ordered without any connection cable, a suitable
cable can be procured locally and, if necessary, be modified
according to the pinout descriptions in this chapter.
NOTE!
A shielded communication cable is required in order to comply
with the FCC/DOC approval and to avoid
the risk of interference to radio communications.
GNDC
2
1
3
4
5
6
7
8
9
10
11
12
13
15
14
16
17
18
19
20
21
22
23
24
25
GNDC
TXD out
RXD in
RTS out
CTS in
DSR in
GNDI
+20 mA 1
-20 mA 1
+TXD
-TXD
+20 mA 2
GNDC
-20 mA 2
+RS 422 In
+5V Ext.
-RS 422 In
+RXD
+RS 422 Out
DTR out
-RS 422 Out
-RXD
Signals on the printer's
communication port "uart1:"
0
230V
MADE IN SWEDEN
Type
Art. No.
Ser. No.
115/230 V 2.6/1.3 A 50–60 Hz
TA
UART = Universal Asynchronous
Receiver and Transmitter
