Dimensions and Pinout ===================== Dimensions ---------- .. figure:: dimensions.jpg :height: 800px Dimensions of the IOBoard and switch for CAN terminating resistor .. note:: The resistor arrays for the digital inputs must be chosen according to the used high level voltage! === ===== 5V 330Ω 12V 1kΩ 24V 3.3kΩ === ===== .. tip:: Set switch ``S1`` to ``ON`` to activate the CAN terminal resistor. Pinout ------ Details on the connectors can be found at :ref:`connectors`. Connector X1 ************ Würth Elektronik, MPC4, 4 pins Use this plug to connect the power supply and the CAN bus. === ============ Pin Description === ============ 1 Power supply 2 CAN High 3 Ground 4 CAN Low === ============ Connector X2 ************ Würth Elektronik, MPC4, 16 pins This connector is used for the common ground lines of the optocoupled inputs and outputs and for all signal lines of the digital outputs. === =========== Pin Description === =========== 1 Input ground 2 (digital inputs 9 – 16, JP4) 2 Output ground 1 (digital outputs 1 – 6, JP1) 3 Digital output 12 4 Digital output 9 5 Digital output 8 6 Digital output 6 7 Digital output 4 8 Digital output 2 9 Input ground 1 (digital inputs 1 – 8, JP3) 10 Output ground 2 (digital outputs 7 – 12, JP2) 11 Digital output 10 12 Digital output 11 13 Digital output 7 14 Digital output 5 15 Digital output 3 16 Digital output 1 === =========== .. tip:: Use the solder jumpers JP1 to JP4 to connect the ground lines of the digital inputs and outputs directly to the ground line of the supply voltage. Connector X3 ************ Würth Elektronik, MPC4, 16 pins The 16 digital inputs are connected to this plug, indicated by LEDs. .. note:: Please use the correct limiting resistors! === =========== Pin Description === =========== 1 Digital input 16 2 Digital input 14 3 Digital input 12 4 Digital input 10 5 Digital input 8 6 Digital input 6 7 Digital input 4 8 Digital input 2 9 Digital input 15 10 Digital input 13 11 Digital input 11 12 Digital input 9 13 Digital input 7 14 Digital input 5 15 Digital input 3 16 Digital input 1 === =========== Connector X4 ************ Würth Elektronik, MPC4, 8 pins Use this plug to connect to the four isolated relay outputs. The maximum current on each contact is 2 A. === =========== Pin Description === =========== 1 Relay 4: Common 2 Relay 4: Normally closed 3 Relay 3: Common 4 Relay 2: Normally open 5 Relay 1: Normally open 6 Relay 4: Normally open 7 Relay 3: Normally closed 8 Relay 3: Normally open 9 Relay 2: Normally open 10 Relay 1: Normally open === =========== Connector X5 ************ TE Connectivity, HE14, 4 pins The IOBoard's internal 5 V logic supply is available on this connector. ==== =========== Pin Description ==== =========== 1, 3 Ground 2, 4 5 V (max. 500 mA) ==== =========== Connector X6 ************ TE Connectivity, HE14, 4 pins This connector provides four analogue inputs for voltages from 0 V to 5 V, relative to the ground level of the IOBoard. === =========== Pin Description === =========== 1 Analogue input 1 2 Analogue input 2 3 Analogue input 3 4 Analogue input 4 === =========== Connector XCAN ************** Würth Elektronik, MPC4, 2 pins The CAN bus may be continued from this connector. === =========== Pin Description === =========== 1 CAN High 2 CAN Low === =========== Connector XRS ************* TE Connectivity, HE14, 3 pins This connector provides access to the IOBoard's RS-232 interface. === =========== Pin Description === =========== 1 Ground 2 TxD (IOBoard transmit line) 3 RxD (IOBoard receive line) === ===========