The
port
entered must be the serial port connected to the NCM either
directly or via a modem. (See
Establishing a Connection
later in this
section.) The allowable serial ports and their configuration defaults are
shown in the table below. If you do not specify a port, the NT Emulation
software will communicate via COM2.
Port
Port
Baud Rate
Port Address
IRQ
COM1
9600
3F8
4
COM2
9600
2F8
3
COM3
9600
3E8
4
COM4
9600
2E8
3
HOSTESS1
9600
2E0
3
HOSTESS2
9600
2E8
3
HOSTESS3
9600
2F0
3
HOSTESS4
9600
2F8
3
Table 6: PC Serial Port Configuration Defaults
The
baud_rate
specified must match the baud rate defined for the NT
port at the Network Control Module (NCM). Standard value is
9600 baud; however, if you are using a PC with a 8086 processor or a
286 processor running at less than 14 MHz, and you are using a mouse
that is interrupt driven, you need to lower the baud rate to 2400 for
optimum efficiency. The NT Emulator supports baud rates of 300, 1200,
2400, 4800, and 9600. For instructions on changing the baud rate
defined for the NT port, see
Defining Devices
in your
Operator
Workstation User’s Manual
, and the
Reference
section of your
DDL
Programmer’s Manual.
Baud Rate
Note:
If you do not own these manuals, contact your local Johnson
Controls office for help.
Network Terminal User’s Manual
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