14 ENGINEERING DOCUMENTATION
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7.4 Strip for connecting external devices
Inside SE-01/N/18 and SE-01/N/25 indicators housing there is a strip with
communication ports, transmitters and external keys connections on it.
The draft of SE-01/N/18 (SE-01/N/25) indicators strip:
Strip description:
IN-A(+), IN-B(-),
OUT-A(+), OUT-B(-)
- input and output of RS485 interface,
+ 4-20 - (+) analog output 4-20mA
(optionally 0-10V or 0-20mA),
- 4-20 - (-) analog output 4-20mA
(optionally 0-10V or 0-20mA),
P1-P3(THRESHOLDS) - opto-isolator outputs for transmitters,
GND - external ground (opto-isolators emitters),
RS1 - RI, TO i GND - main RS232C interface (e.g. for a computer),
RS2 - RI, TO i GND - additional RS232C interface (e.g. for a printer),
0
,
T
, MENU, , I/
→0←, T/ON, F, P,
- external keys inputs,
+24V - an input of external feeder voltage input supplying
opto-isolators.