IO-EISO-5RS485 5-Port RS485 Expansion Module

The IO-EISO-5RS485 is a 5-port RS485 serial communication expansion module designed for use with CoreIPC mainboards. It converts TTL signals to five RS485 interfaces and provides RS485 RX/TX digital signal isolation.

Five 2 × 3-pin JRS485 headers, with a 2.00 mm pitch, provide the RS485 connections. Each header includes RS485_A+, RS485_B− and GND signals. The module includes one 2 × 5-pin COM2 header with a 2.54 mm pitch, plus one 2 × 20-pin standard 4-port serial header with a 2.00 mm pitch for COM3 through COM6 TTL signal connections. Power is supplied through a 1 × 2-pin locking Phoenix terminal with 12V and GND pins.

The module measures 90 mm × 60 mm and includes four mounting holes for installation inside an enclosure.

Top view of the IO-EISO-5RS485 RS485 expansion module.

IO-EISO-5RS485 connector layout showing JRS485_1 through JRS485_5, 12V_IN, COM2 and COM3–COM6

Connector layout of the IO-EISO-5RS485 RS485 expansion module.

General
Modell	IO-EISO-5RS485
Product Type	Serial Communication Expansion Module
Serial Function	TTL to 5 × RS485 conversion
Leistungsaufnahme
Input Voltage	12V DC
12V_IN	1 × 2-pin locking Phoenix terminal
Input Signals	Pin 1: GND; Pin 2: 12V
Serial Communication
RS485 Ports	5
Signal Isolation	Digital isolation for RS485 RX/TX signals
JRS485	5 × 2 × 3-pin headers, 2.00 mm pitch
RS485 Signals	RS485_A+, RS485_B− and GND
Interfaces and Control
COM2	1 × 2 × 5-pin header, 2.54 mm pitch
COM2 Signals	RXD, TXD and GND
COM3–COM6	1 × 2 × 20-pin standard 4-port serial header, 2.00 mm pitch
COM3–COM6 Signals	RXD, TXD and GND for each port
Mechanical
Abmessungen	90 mm × 60 mm
Mounting	Four mounting holes

IO-EISO-5RS485 User Manual Issue 1.0

Herunterladen →

CoreIPC combines industrial motherboard and embedded computing experience with manufacturing and product-customization support for industrial hardware projects.

Industrial motherboard and embedded computing experience
OEM, ODM and product customization support
10,000+ m² manufacturing facility with 6 SMT lines
300+ skilled employees and global customer support

Q: How many RS485 ports does the IO-EISO-5RS485 provide?

A: The module converts TTL signals to five RS485 interfaces. Each RS485 port is provided through a separate 2 × 3-pin JRS485 header, allowing the module to present five RS485 connections.

Q: Does the module provide signal isolation?

A: Ja. The product documentation specifies digital isolation for the RS485 RX/TX signals. No isolation voltage or other isolation-performance value is provided in the current documentation.

Q: What power input does the IO-EISO-5RS485 require?

A: The IO-EISO-5RS485 uses a 12V DC input through a 1 × 2-pin locking Phoenix terminal labeled 12V_IN. Pin 1 is GND, and Pin 2 is 12V.

Q: Which host-side serial interfaces are provided?

A: The module provides one 2 × 5-pin COM2 header with a 2.54 mm pitch, carrying RXD, TXD and GND. It also provides one 2 × 20-pin standard serial header for the COM3 through COM6 TTL signal connections.

Q: What are the module dimensions and mounting method?

A: The IO-EISO-5RS485 measures 90 mm × 60 mm. Four mounting holes are provided, allowing the module to be secured inside an enclosure.