B&B Electronics 3PCIOU1 Spécifications télécharger pdf (Page 46)

DIP Switch / Mode Settings

A-2 Appendix A Document Number 3PCI-4310m

2. Make sure you have RTS Control set to the correct mode: Normal for RS-

232, RS-485 Mode for RS-485. RS-422 mode works in either setting if the

mode jumpers are set correctly.

Checking the MIport Card

Using ComTest and a loopback connection, you can check the operation of your MIport

card separate from the rest of your communications system.

Note: Refer to Appendix C for information on how to install and use

ComTest

1. A loopback connection for RS-232 connects the Transmit output to the

Receive input (pins #2 & #3 on the DB-9 connector). Use connections below

to check all.

Figure 23. RS-232 Loopback w/Handshaking Connections

2. For RS-422 or 4-wire RS-485, connect the TD(A) to RD(A) and the TD(B) to

RD(B). Then use the ComTest program to send characters, and observe the

characters being received.

Figure 24. RS-232 Loopback Connector

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 56 57

Pas de commentaire

B&B Electronics 3PCIOU1 Spécifications Page 46