3. Installation
This section describes the jumper and switch functions for configuring the RS-232↔485/422 Converter. See Figure 1 on the next page for the component locations.
To install your RS-232↔485/422 Converter:
1.Set each of the ten jumpers/switches for your application.
2.Connect the RS-232↔485/422 Converter devices together as shown in Figures 5 through 8 (pages 23–25).
3.Apply power. (PS154 or PS154E, depending on which RS-232↔485/422 Converter you have. See Chapter 1 for more information.)
3.1Jumper and Switch Configuration
NOTE
As you read this section, refer to Tables 1 and 2. Table 1 (page 15) lists DCE jumper settings, and Table 2 (page 20) lists DTE jumper settings.
3.1.1DTE/DCE CONFIGURATION
A DIP shunt is used to select DTE or DCE configuration. For the RS-232↔485/422 Converter to appear as a DTE device, put the DIP shunt jumper in socket XW1B. For the RS-232↔485/422 Converter to appear as a DCE device, put the DIP shunt jumper in socket XW1A.
3.1.2FRAME GROUND/SIGNAL GROUND
Jumper W7 ties signal ground to frame ground. The position is left open at the factory. If signal ground is to be connected to frame ground, solder a 100-ohm, 1/2-watt resistor in location W7. A wire jumper may also be used. Care must be taken to ensure that ground circulating currents are limited to acceptable levels.
3.1.3HALF/FULL-DUPLEX OPERATION
Jumper W8 selects half-duplex or full-duplex operation. Set W8 to the HALF position (B-C position) for half-duplex operation. Set W8 to the FULL position (A-B position) for full-duplex operation.
