Changing Com Port Number

From the Device Manager, Select Properties, Settings, Advanced.

Available names for Com numbers are shown. Select a new number from those not “in use”. Com numbers from Com1 to Com256 may be available. Com numbers “in use” may be used by motherboard ports, Modems, virtual com ports for network serial server devices or FAX modem. Formerly installed USB to serial adaptors, PCI cards or other hardware may have reserved a com number. The device may need to be added back to the system, or the registry may need to be edited with Reg. Edit or a similar utility.

After selecting a new com number, Click OK, then OK again on the Settings page.

Documentation Number 3PCIO1-0903 Manual

Chapter 3

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B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

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B&B Electronics RS-422 manual Changing Com Port Number

RS-422 specifications

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