ECI0016PA Data Capture Card User Manual V1.5
3.5.
RS232 Serial Port
RS232 is in one standard DB9 male socket and supports MODBUS_RTU protocol and
custom communication.
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Interface Definition
Terminal
PIN
Name
Type
Function
1
、
4
、
6
、
7
、
8
NC
Spare
Reserved
2
RXD
Input
RS232 signal, receive data
3
TXD
Output
RS232 signal, send data
5
EGND
Output
Negative pole output of 5V power,
and output for the public end
9
E5V
Output
Positive pole output of 5V power,
maximum is 300mA
3.5.1.
RS232 Interface Specification & Wiring
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Specification:
Item
RS232
Maximum Communication Rate (bps)
115200
Terminal Resistor
No
Topology Structure
Connect correspondingly (1 to 1)
The number of nodes can be extended
1
Communication Distance
The Longer communication distance is,
the lower communication rate is,
maximum 10m is recommended.
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Wiring Reference:
Содержание ECI0016PA
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