Hardware Configurations. EasyIO FC 20

EasyIO FC20 User Reference v1.3

Hardware Configurations

Power supply Connection

Both AC and DC can be used for EasyIO FC-20 controller. Refer to electrical specification for the working range. In order to avoid damage on the controller input/output devices and RS485 connection, use individual power supply for each controller. If a single power supply is used, make sure controller power supplies are connected with the same polarity.

Power Supply Connection

Multiple controllers share single transformer connection

EasyIO FC20 User Reference v1.3

RS485 Connection

RS485 connection must be terminated at both ends with termination resistor, typically 120Ohms. It is recommended to use shielded twisted pair wire (STP) for the wiring. Lightning protection circuit is recommended to be installed at one end of the wiring. The controller should be wired in daisy chain network topology as shown as image below. If wire branch can be avoided, keep it as short as possible, and never connect more than one device to the wire branch.

Be careful if single power supply is used for all connected RS485 device, make sure all devices are having the same ground connection. Make sure you are connecting the same wire for the same terminal position, all “H” terminals connected to the same wire.

Daisy Chain Network Topology

RS485 Connection

EasyIO FC20 User Reference v1.3

RS 485 Serial port settings.

Every EasyIO FC controller comes with 2 RS -485 ports respectively D1 and D2.

Below is a table explaining the details for each serial port configurations.

Port Number Protocol Communications supported Default Serial port settings

Port 1

( D1+ , D1- )

Port 2

( D2+ , D2- )

Modbus OR BACnet

Protocol selection is done via DIP switch 1.

DIP 1 = OFF = Modbus RTU

DIP 1 = ON = BACnet MSTP

Only supports Modbus RTU Protocol

(Default).

It supports Modbus Master as well if configure via FC Virtual Tool.

Modbus

Baud Rate

Parity

Data Bit

Stop Bit

BACnet

Baud Rate

Modbus

Baud Rate

Parity

Data Bit

Stop Bit

: 19.2K

: even

: 8 (Not editable)

: 1

: 19.2K

: 19.2K

: even

: 8 (Not editable)

: 1

Remarks

Port 1 is used to perform;

- Firmware flashing. (FwTool.exe)

- Virtual Device for program downloads. (FcVirtualDevice.exe)

- Terminal mode for serial configurations editing. (FwTool.exe)

If port 2 is configured Modbus Master RTU (Default)

Port 2 is used to perform;

- Virtual Device for program downloads. (FcVirtualDevice.exe)

EasyIO FC20 User Reference v1.3

Jumpers Setting

Below image shows the jumper setting for Universal Input, Analog Output, BACnet/Modbus Selection, and the BACnet MSTP ID (1~127) or Modbus Serial ID (1~127).

The controller comes with BACnet and Modbus protocols selection. By default, Modbus protocol is selected. To switch to BACnet protocol, toggle the ‘1’ of the dip switch to ON.

The remaining DIP switch ‘2’ ~ ‘8’ are for BACnet MSTP ID or Modbus Serial ID (address 0 is not available; it will be set to 1) depending on DIP switch 1 selection.

Any changes to the DIP switch, a power cycle is needed.

EasyIO FC-20 Jumpers Setting

Image below show the DIP switch settings details.

For serial addressing it uses binary bit. The Least Significant Bit (LSB) in DIP 8. The Most Significant Bit

(MSB) is DIP 2.

The white the spot/white square represent the DIP switch in ON position.

EasyIO FC20 User Reference v1.3

117

EasyIO FC-20 enlarged DIP switch Setting

5

6

7

8

2

3

4

DIP switch number

1

Functions

Protocol Setting

Serial Address (Address 64)

Serial Address (Address 32)

Serial Address (Address 16)

Serial Address (Address 8)

Serial Address (Address 4)

Serial Address (Address 2)

Serial Address (Address 1)

Remarks

On = Bacnet MSTP

Off = Modus RTU

MSB

LSB

EasyIO FC20 User Reference v1.3

Digital Output Wiring Connection

EasyIO FC-20 has four general purpose isolated digital output connections (relay output). Each relay output able to drive up to 1A 30VDC/ 48VAC load.

It does not output voltage or current. It is a dry relay contact.

Digital Output Connection

EasyIO FC20 User Reference v1.3

Universal Input Connection

EasyIO FC-20 has twelve non-isolated universal inputs. The universal input supports three type of analog signal i.e. resistance, voltage and current transmitter via hardware jumper and internal register settings: a) Resistance – The working range of resistance is 0 – 300K Ohms. If the input is configured as

Thermistor type, the system provides 8 customizable temperature lookup tables for resistance to temperature translation. The commonly used Thermistor like 10K, 10K with Shunt, 1K Balco and 1K

Platinum are all supported b) Voltage – Two selection of working range 0 – 5V and 0 – 10V. The minimum input impedance of voltage input is 1 Mega Ohm. c) Current – Two selection of working ranges 0 – 20mA and 4 – 20mA. The current input impedance is less than 25 Ohm. d) Pulse Input – Only UI1, UI2, UI3 and UI4 are capable of receiving high speed pulse. Minimum on time pulse is 25ms and minimum off time is 25ms. Refer to image below.

Universal Input Connection

EasyIO FC20 User Reference v1.3

Universal Input as Pulse Input specifications, Max 20Hz

Analog Output Connection

EasyIO FC-20 has four Analog Output connections. Each Analog Output can be configured to drive voltage or current output via hardware jumper setting and internal register settings.

The working range for voltage is 0 – 10V and for current either 0 – 20mA or 4 – 20mA. For current transmitter, the circuit able to drive load impedance up to 800 ohm which is ideal for long wire connection (up to 500 meter wire length).

Analog Output Connection