adesto SM2400-EVK2 Podręcznik użytkownika - Strona 5
Przeglądaj online lub pobierz pdf Podręcznik użytkownika dla Płyta główna adesto SM2400-EVK2. adesto SM2400-EVK2 16 stron. Serial-2-plc adapter
Drukuj stronę3. Hardware Connection
3.1 Evaluate ASCII Pass-through Using the SM2400-EVK2
The SM2400-EVK2 can be used to evaluate ASCII pass-through by connecting an RS232 device to the host inter-
face P1 header on the base board of the SM2400-EVK2 as shown below.
3.2 Replacing the RS485 Bus with Power Line via SM2400-EVK2 with ASCII Pass-through
This section shows the difference between the older RS485 bus network (Figure 2) and the newer RS485 bus net-
work with RS232 devices (Figure 3) and RS485 devices (Figure 4).
Master
P1 Header on the SM2400-EVK2 Base Board
Figure 1.
Table 1. P1 Header Pin List
Pin#
P1
3V3
P2
Mode1
P3
RS485 Data Enable
P4
EX_UART_RX
P5
EX_UART_TX
P6
Reset
P7
GND
RS485 Bus
Slave 1
Old RS485 Bus Network
Figure 2.
Name
Slave 3
Slave 2
SM2400 Serial-to-PLC Adapter User's Guide
Slave 4
UG-SM2400–-177A–-02/2019
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