The following diagram shows the locations of the jumpers:
Figure 2-6:Jumper Layout
COM1 Port Setting (JP1)
Jumper JP1 lets you configure the COM1(3F8) port as an RS-232 or as an RS-485 interface for different
applications. Jumper settings are shown below:
Watchdog Timer Setting (JP2)
Jumper JP2 lets you configure the watchdog timer in disable mode, reset mode or NMI (Non-maskable
interrupt) mode.
NMI
RESET
JP2
JP2
Reset Mode
Non-maskable
Interrupt (NMI)
NMI
RESET
JP2
Disable Watchdog Timer
NMI
RESET
(Default)
Reset Function Setting (JP3)
Jumper JP3 enables or disables the function of the reset pin, as shown below:
2.4 Communication Wiring
The ADAM-4500 offers two serial ports: COM1(3F8) in RS-232 or RS-485, and COM2 (2F8) in RS-485.
COM1 can be configured as an RS-232 or as an RS-485 interface via the jumper setting. This provides
flexibility for communications between the controller and other devices in your application.
RS-232 Connection
The ADAM-4500 has a DB-9 pin connector as its RS-232 port connector. Since the connection for an RS-
232 interface is not standardized, different devices implement the RS-232 connection in different ways. If
you are having problems with a serial device, be sure to check the pin assignments for the connector.
The following table shows the pin assignments for the ADAM-4500's RS-232 port.
Pin No. Description
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Table 2-1: Pin Assignments of RS-232 Port
