Chapter 1 Understanding remote management 19
ICS Remote Tools User Guide
Connecting directly to the Norstar system
If you are using a computer that is at the same site as the Norstar system, you can connect to the
RAD serial port using a serial cable (RS-232) connected to one of the serial ports on your
computer. Ensure that you note which serial port you use.
When you click on the Connect button on an ICSRT Connection Properties screen that is correctly
set for Direct connection (“Connecting to a Norstar system” on page 51), your computer directly
contacts the RAD, which verifies the RAD password and opens up a connection.
Figure 3 Connecting directly to the RAD using a serial cable
In a direct connection, the RAD is connected to one of the computer COM ports by an RS-232
cable. In this type of connection, the data transfer rate between the computer and the KSU is 9600
baud. The cable must be constructed as shown in the pinout diagrams in Figure 4 and Figure 5.
Figure 4 Pinouts for direct connect, RAD to computer
RAD
Norstar system
Onsite computer
Serial cable
RAD
25-pin,
D-type male
connector
Computer port
25-pin, D-type
female connector
Computer port
9-pin, D-type
female connector
RAD
25-pin,
D-type male
connector
2TX 2
3RX 3
5CTS 5
6DSR6
7GND7
8OCD8
20 DTR 20
2TX 3
3RX 2
5CTS 8
6DSR6
7GND5
8OCD1
20 DTR 4
