Model: SRC88 RS485/RS232 High-Speed
Digital I/O Board w/Relays

General Description:

The SRC88 Remote I/O Board has 8-buffered TTL/CMOS inputs and 8-Relay (Form A) outputs (other configurations available). The unit can be controlled by our simple/efficient command structure from a host computer (computer mode), such as a PC. Also, two units can be operated in a standalone mode (master/slave mode) to form a "Relay extension cord," with 8-channles of control in each direction, at distances of up to 4000 ft. or more. The unit can communicate using RS485 or RS232, at data rates up to 115.2K bits/second. Up to 256 units (in computer mode & with repeaters) can be connected on a single pair of wires to form a large (4096 I/O points) RS485 multi-drop network.

The SRC88 has an onboard switching regulator for 9-35VDC operation, LED indicators for all inputs and outputs, 25 jumpers for communications address, Baud rate, mode control, etc. Removable screw terminal connectors are provided for ease of installation/removal. The RS485 serial port has built in transient protection and jumper selectable termination. LED indicators monitor the data flow of the serial port.

"Less is more" when using our command structure to control the SRC88. Only two ASCII commands are needed for full control: 1) The "LXX" command addresses the unit and returns the unit address and the input status; 2) The "K?DD" command can be used to control any one of the eight individual relay (K1 - K8, with or without an 8-bit timer), or the on/off status of all 8 relays, can be updated with a single execution of this one command.

Download:
	SRC88CPU.pdf	SRC88 CPU
	SRC88SS.pdf	SRC88 Physical

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Please call us at: 513-874-4796