The NETWORK I/O MODULE is a small yet very powerful unit that provides a remote I/O interface for a central control system.  It has totally configurable digital I/O that will allow its use in a wide variety of applications.  It is totally controlled from either its internal RS232 or Ethernet port.

Numerous modules can be used in a system to provide monitoring and control on a large number of different units. Since each module set has its own IP address, the only practical limits on the system size is the network to which they are attached.  Also, since each module operates independently, there is no reduction in data collection performance as the system grows.

The system has both master and slave modules.  Slave modules may be connected to the master via the RS485 port. The user has no additional communications interface requirements when using slaves.  The master module will handle all I/O with the slave(s) and present all information via the single RS232 or Ethernet port.  Control of the outputs on the slaves is handled in the same manner.  The user just talks to the master and it handles the slave(s).

The I/O is brought out on  DB25 connectors.  All  I/Os may be configured as either inputs or outputs.  Any or all of them may be set as optically isolated inputs.  Any or all may be configured as outputs. Half may be configured as optically isolated transistor outputs. Half may be configured as relay outputs. These configuration patterns allow the user to apply the unit in an almost endless variety of applications.

There may be up to 7 slave units tied to the master via the RS485 slave link to allow a maximum of 512 I/0 points to be tied to one Ethernet port. 

The DB25 connector wiring is fully compatible with SEMI E84-0701.  When configured for this application the relays are disabled and the optical isolated inputs and outputs provide an interface suitable for both the Hardwired Connection and Optical Transmission Device connection (as called out in Figures 23 and 24 of the standard).

The unit also has the ability to run interactive local programs.  These operational sequences are held in the internal flash memory and may be activated by a simple configuration command. 

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Features and Specifications

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Available Models




(Configurable, See Note 1)




8230M-32 MASTER 32
8230M-48 MASTER 48
8230M-64 MASTER 64




8230S-32 SLAVE 32
8230S-48 SLAVE 48
8230S-64 SLAVE 64

1.)  Each I/O point may be individually configured as either an input or output--8 are configurable as Relay outputs and 8 as OCT outputs.

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Manuals and Drawings


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Related Products


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3081 Elm Point Industrial Dr., St. Charles, MO  63301

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