Power supply				24 V AC/DC, connection via terminals

Current consumption			typically 21 mA (DC), 60 mA (AC), with all relays activated

Power dissipation			max. 2.1 W (DC), 3.1 W (AC), with all relays activated

Specifications digital outputs:		MOSFET, ground referenced (source operation mode +24 VDC)
Output current				5 ... 500 mA (leakage current max. 0.1 mA)
					The load resistance shall not be less than 48 Ohms.
Voltage drop				max. 0.4 V at 0.5 A
Inductive loads				should be avoided or be suppressed at the source


Bus interface				RS485

Supported baud rates			9,600	Baud
(Autobauding)				19,200	Baud
					38,400	Baud
					57,600	Baud

Bus cycle time				individually depending on the baud rate and the number of  
					data points that will be addressed


Memory					uPC internally

Configuration settings 			are stored in the internal EEPROM, 
					max. number of write cycles up to 100,000 times

Protocol				Modbus rtu (RS485)
Serial port parameter setting		8-N-1

Inputs and outputs			see corresponding documentation of the respective modules

Environmental conditions
Operating temperature			0...50°C
Transport and storage temperature	0...70°C
Relative humidity			10...90%, non-condensing

Protection class			IP 20

Dimensions				(for exact dimensions see appendix B)