(2) When setting parameters of more than one unit
In this case, use the communications method called "RS-485". Because multiple units are controlled, each unit
needs its own unique ID registered in advance. For details, refer to p. 8 "7. UNIT ID NUMBER SETTING".
Set the communications port selection switch in the front pocket to "RS-485". Connection between a personal
computer and each unit is shown in Fig. 2.
Personal computers normally have only an RS-232C port, and thus require an adaptor to convert the RS-232C
port to an RS-485 port.
Connect the PC's RS-232C port to the DP-0202's (DP-0204's) female connector for RS-485 communications
via the adaptor. Similarly, make connections for the second unit and its subsequent units as shown in Fig. 2.
Since the settings made through the PC can be stored in each unit's memory, the set patterns can be recalled if
only units are connected as shown in Fig. 2 ; the adaptor and computer are not necessary to recall the patterns.
In this case, the unit with ID No. 1 acts as a master unit to control the other units.
ID No. 1
ID No. 2
: XLR 3P female connector (option)
: XLR 3P male connector (option)
ID No. 3
ID No. 4
Fig. 2
Communications port connections between a PC and multiple units
(3) When using the DP-0202/DP-0204 in conjunction with the DX-0808 matrix unit
Parameters can be set and controlled from one PC in the same manner and connections as described in Item 2
above.
7