Proaramming with SPM
Figure 2-3. Direct Local Connection
Local Modem Connection
For a local modem connection, use a modem connected to (or built into) the PC
to access the internal modem in the control unit. Connect the modem to an 012
module in the control unit, as shown in Figure 2-4. The internal modem
operates at a speed of 1200 bps.
Figure 2-4. Local Modem Connection
Remote Modem Connection
For a remote modem connection, you also use a modem connected to (or built
into) the PC to access the internal modem in the control unit; however, the
connection is a dial-up connection, as shown in Figure 2-5. The internal modem
operates at a speed of 1200 bps.
Connecting the PC 2 - 9