Instruction manual

Getting Started
8-22
Installation, SPM, Maintenance, and Troubleshooting Supplement
Figure 8-4. Internal Connection
External Connection 8
For an external connection, you must use a modem (either connected to, or
built into, the PC) to access the internal modem in the control unit. You must
also use a dial-up connection, as shown in Figure 6-5.
The internal modem operates at speeds of 1200 and 2400 bps.
Figure 8-5. External Connection
RS-232
012 (T/R)
Port
Serial
Communications
Port
MODEM
RS-232
Serial
Communications
Port
Incoming
trunk line
Public or private
telephone network
MODEM