2. Setup
14
COM-1(PM), COM-1D(PM)
Setting the Data Transmission Mode and Terminator on the
COM-1D(PM)
This setting is only required on the COM-1D(PM).
Use a flathead screwdriver or similar to open the cover on the underside of the connector cable (CB-
1D(PM)). This exposes the DIP switch (SW1). As shown in Figure 2.4, an easy way to open the cover
is to insert the tip of the screwdriver into the slot on the underside of the connector cable and then rotate
the screwdriver.
Turn the screwdriver to the right.
Connecting cable
Figure 2.4. How to Open the Cover
CAUTION
Pushing the screwdriver in too far may damage the inside of the connector. Take care not to apply
any force to the inside when turning the screwdriver.
SW1 can be used to set the COM-1D(PM) to full or half duplex mode. Full duplex can be used for a
one-to-one connection. Half duplex mode allows a party line connection to be used. You can also use
this switch to specify whether or not to insert the 100
Ω
terminating resistor into the receiving lines (RxD
and CTS).
1
2
3
4
5
6
7
8
O
N
Bottom
Lid
SW1
Figure 2.5. Switch for Setting the Transmission Mode and Terminating Resistors for the COM-
1D(PM)
