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  • 4.60 (5)
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Ethernet module H4-ERM-F has 10BaseT Ethernet communications with a 10 Mbps data transfer rate manufactured by Automation Direct for the DirectLogic 405 family. This module only has one ST-style fiber optic port.



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  • Part Number: H4-ERM-F
  • Manufacturer: Automation Direct
  • Series: DirectLogic 405

H4-ERM-F Technical Specifications

Model Number H4-ERM-F
Series DL405, DirectLogic 405
Manufacturer Automation Direct; Host Automation Products, L.L.C
Product Type Ethernet Remote I/O Master Module
5V Current Consumed Value 450
Used With DL405 and DL205
Ethernet Protocols TCP/IP, IPX
Power Consumption 450 mA @ 5 VDC

About the H4-ERM-F

The H4-ERM-F module is a fiber optic ethernet remote I/O master module that was created by AutomationDirect for the DirectLogic 405 series. The H4-ERM-F module has two closely related products, the H4-ERM module, and the H4-ERM-100 module. All three of these modules are closely related yet have some differences in the specifications. 

All of the H4-ERM modules are compatible with DirectLogic 205, DirectLogic 405, Do-more PLC systems, and WinPLC systems. The H4-ERM module connects with the ethernet remote slave modules using the 10BaseFL fiber optic ethernet link cable. Each H4-ERM module can have a maximum of sixteen slave modules connected when using the DirectLOGIC 205, DirectLOGIC 405, and the Do-more PLC systems.

The H4-ERM-F module uses 10BaseFL ethernet communication methods, has an ST-style fiber optic ethernet port, and uses TCP/IP and IPX ethernet protocols. The link distance for the H4-ERM-F module is very long at 2,000 meters or 6,560 feet. The power consumption rating of the H4-ERM-F module is 450 mA at 5 VDC.

As mentioned above, the H4-ERM-F module has an ST-style connector that will use a quick-release coupling requiring it to be turned a quarter for engaging or disengaging functions. The ST-style connectors on the module can connect another H4-ERM-F model or a fiber optic repeater or hub. When the connectors are being used with fiber optic cables, the module will accept multimode fiber optic cables 62.5 or 125. The cabling used is best to permit communications and immunity to noise. 

Frequently Asked Questions about H4-ERM-F

What is the H4-ERM-F?

The H4-ERM-F is an Ethernet Remote Input Output Master Module. The communication type on this unit is 10BaseFL Ethernet communications. The appropriate data transfer rate on the module is 10 Mbps. It has an ST-style fiber optic Ethernet port with TCP/IP and IPX Ethernet protocols. 

What are the differences between the Ethernet Remote Master modules?

The main difference between the three Ethernet Remote Master (ERM) modules is the communication types. The H4-ERM-F module has 10BaseFL Ethernet communications, with the H4-ERM having 10BaseT Ethernet communications, and the H4-ERM100 having 10/100BaseT Ethernet communications. The base ERM module has a data transfer rate of 10 Mbps, which the H4-ERM-F also does. Another difference between the three units is the power consumption; the H4-ERM-F module has a higher power consumption of 450 mA, with the H4-ERM at 320 mA and the H4-ERM100 at 300 mA.

Reviews For H4-ERM-F

Internal Review

While some modules in the DL405 series can only be configured with one software type, the H4-ERM-F module has two different software configuration methods. The ERM Workbench or the ERM Workbench PLC Wizard. For information on how to configure the two software types, refer to the H24-ERM-M user manual. - AX Control Tech

Repair Services For H4-ERM-F

Type Lead Time Price Action
Repair Service 1-2 weeks $240

Our highly skilled technicians can repair your H4-ERM-F. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

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