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IRSCOM2A : Opto/Xformer Isolated Async RS232 to RS485 or RS232 to
RS422 fast automatic converter with removable connectors and LED indicators

IRSCOM2A

IRSCOM2A with Box

IRSCOM2A Label

"Let me spin a very large
RS485 network for you!"

spider

  • Fast auto TX-enable RS485 (2-wire, half-duplex) or RS485/RS422 (4-wire, full-duplex, fixed enable or auto TX-enable) for multi-drop, and/or point-to-point networks.

  • Fast auto TX-enable RS232 to RS485 interface converter for 2-wire, half-duplex communications, or fixed/auto TX-enable RS232 to RS485/RS422 interface converter for 4-wire, full-duplex, point-to-point or multi-drop communications, at distances up to 4000 ft. and data rates up to 115.2Kbps.

  • Galvanic (Opto/Xformer) Isolation helps eliminate noise, and protects equipment from destructive transients found in industrial applications.

General Description:

The IRSCOM2A is a fast Async bi-directional RS232 to RS485 interface converter for 2-wire, half-duplex applications, with an automatic TX enable circuit, that will operate at data rates up to 115.2Kbps. The unit can also be used in 4-wire RS485/RS422 application (point-to-point or multi-drop, full-duplex). The unit has jumpers for bias, termination, RS232 DTE/DCE selection, and operating mode settings. The unit has edge mounted LED indicators, a removable screw terminal connector, and uses SN75LBC184P limited slew rate transceivers (1/2 unit load) with built-in transient protection. Galvanic isolation between the RS232 and RS485 helps to eliminate a wide variety of problems encountered in industrial and/or real world applications.

The IRSCOM2A is designed for office and/or industrial applications, and provides superior characteristics/features normally found only on more expensive units. The IRSCOM2A can be used in outdoor applications; however, many factors can affect reliable operations. Please call for additional information and/or peruse our Fiber Optic product line (compatible with our "copper" converters).

Need something special? Please contact us. We have additional isolated and non-isolated converters, repeaters, and repeater hubs. Units are generally stock to 2-3 business days for shipment. We design and manufacturer our entire product line, and offer technical support for our units, and can offer system recommendations for your application. Please give us a call: 513-874-4796.

Related Files:

pdf icon
Converter schematic/physical Rev. B1

Physical Properties and Features:

RS232: 3-wire interface to RJ11/12 Connector (TX, RX, Common)
RS485: Removable screw terminal (Common, TX/RX-, TX/RX+, RX-, RX+, Common)
Power: 2.1mm center positive "Barrel" connector (9VDC)and Wago terminals
LEDs Power(YEL), TX-RS485(RED), RX-RS485(GRN), TX-RS232(RED), and RX-RS232(GRN)
Bias: 620 Ohm pull-up and pull-down (jumper selectable)
Termination: 120 Ohm or 240 Ohm (jumper selectable)
Special: Switching regulator for 9-35VDC operation
Protection: Up to 400W typical per SN75LBC184P specification, and 1500VDC, 1 sec. Galvanic isolation

Specifications:

Distance: RS485/RS422 up to 4000 ft. (1250 meters)
Operation: 2-wire, half-duplex RS485 or 4-wire, full-duplex RS485/RS422
Format: Asynchronous data with any combination of bits, parity, stop
Speed: Up to 115.2Kbps (slew limited driver)
Temperarure:   0-65C (32-150F) ambient
Humidity: 10-90% non-condensing
Voltage: 9-35VDC
Power: Under 3/4 Watt (typical) + external load
Size: 3.50" X 3.00" X 0.9" (PC Board), with connectors: 3.50" X 3.25"
Mounting: 4-Holes 3.00" X 2.25" (built-in standoffs for #6 hardware)

Options and Ordering Information:

IRSCOM2A: $115.00 ea. (Circuit board only)
Enclosure: $10.00 ea. (Medium)
Cable: $7.50 ea. (RS232, 7 ft., Specify DB9F-7 or DB25F-7)
Supply: $8.50 ea. (12VDC @ 200/300 mA wall power supply)

*IRSCOM2A with all options (DB9F Cable/Enclosure/PS): IRSCOM2A-B9FSPS @ $142.00 ea. (Qty. 1-9)

Need a different configuration or more information? Give Ron a Call at 513-874-4796 or 513-638-0228(Cell)

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