MM8DO - DIGITAL OUTPUTS

This module has 8 open collector (NPN) digital outputs. The outputs may be used to drive lamps or external relays when more drive capability is required. The outputs are isolated from the logic and they share a common negative terminal.

The module may be used as either a slave or master on the Modbus network. When used with a PC or PLC the module will be configured as a slave. When used with a MM8DI module in a point-to-point configuration, the DIP switch 9 must be turned on to set the module up as a master. In this mode the MM8DO module will automatically read the information from the MM8DI module and write the input status to the outputs.

When used as a slave module, the outputs are written to by the Modbus master device such as a PC or PLC. Each output can be individually switched on or off, or all outputs can be set up at the same time by writing a single number to the output register which represents the status of all outputs.

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