6. PERSONAL COMPUTER CONNECTIONS
The DX-0808 has no built-in parameter setting function. You need to use the dedicated TOA software operating
on a personal computer to set the parameters.
There are two connection (communications) methods; RS-232C and RS-485 communications.
Use either communications method depending on the system configurations exampled below.
(1) When setting parameters of a single unit, connect to the RS-232C connector.
(2) When setting parameters of more than one unit, connect to the RS-485 connector.
(3) When setting parameters in the system employing this unit and the DP-0202 or DP-0204 digital processor,
connect the RS-485 connector.
(1) When setting parameters of only one unit
In this case, use the communications method called "RS-232C". Set the communications port selection
switch in the front pocket to "RS-232C". As shown in Fig. 1, connect a straight cable from the PC's
RS-232C port to the DX-0808's connector for RS-232C communications. Either the connector in the front
pocket or on the rear panel may be used: both are 9-pin D-SUB connectors and are connected in
parallel. Below are RS-232C's control specifications:
Baud rate : 9,600 bps
Parity :
None
Data :
8
bits
Stop bits
: 1 bit
Although RS-232C is a one-to-one communications method, the maximum transmission distance is 10 m.
If the distance exceeds 10m, we recommend connecting your unit to the PC using an RS-485, even if using
only one unit. In addition, because the setting status is stored in the unit's memory, set patterns can still be
used even with a personal computer disconnected.
Fig. 1 RS-232C port connection between a PC and a single unit.
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