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i.Board® requires no jumper settings for input channel configuration. The serial port is shipped configured for RS-485, and you only need to move jumpers if you need to switch to RS-232.

I/O points should be connected as indicated in the various diagrams below. In addition to selecting a wiring diagram, the corresponding selections should be made in the I/O Devices -> I/O Setup web pages to inform software of your intentions.

IMPORTANT: Save your configuration changes to the internal file system on the
System -> Setup -> Config File page. Configuration will revert back to defaults upon the next power cycle if configuration changes are not saved.

I/O Point Type
Wiring Guide
Additional Information
A/UI Analog Input:
0-10VDC
Voltage Input
AI inputs 1-8 will accept voltage inputs of up to 10VDC. Voltages to 11VDC will be measured. Voltages to 24VDC will be tolerated, but measurement is internally limited to a reading of 11VDC. (Jumper position: Voltage)
A/UI Analog Input:
0-20mA
Current Input
AI inputs 1-8 will accept current inputs of 0-20mA with the addition of a 500 ohm 1/2 watt external resistor. A 500 ohm resistor will produce a 0-10VDC signal. A 250 ohm resistor may also be used to produce a 0-5VDC signal. (Jumper position: Voltage)
A/UI Analog Input:
Thermistor Input
A/UI inputs 1-8 will accept thermistors of 3k, 10k, or 20k ohms. Linearization via interpolation of a 56-point table is performed internally. (Jumper position: Thermistor)
A/UI Discrete Input:
Discrete Voltage
A/UI inputs 1-8 may be connected as discrete voltage sensing inputs. Inputs up to 24VDC are tolerated, but threshold sensing only functions over the 0-10VDC range. (Jumper position: Voltage)
A/UI Discrete Input:
Dry Contact Closure to Ground
A/UI inputs 1-8 may be connected as discrete inputs sensing dry contact closure to ground. Internal excitation of 3V @ 1mA is provided. (Jumper position: Thermistor)
Power
Connect +24VDC or 24VAC power to the POWER terminal. Connect common or -DC power to the GND terminal. All terminals labeled GND are electrically common to each other.
Power consumption is 150mA @ 24VDC. (i.Board can also operate on 12VDC @ 300mA.)
Wiring Terminals
WARNING: The circuitry inside i.Board is static sensitive. You must use proper ESD protection when handling an open i.Board to avoid permanent damage (not covered under warranty). Contact support@csimn.comif you have any questions about proper ESD protection.

To open i.Board, squeeze the sides firmly and pull apart. There is no need for tools. Do not pry apart. You must squeeze the sides together to unlock the locking tabs in the corners of the case.

Inputs are configured by software controlled FET switches. There are no physical jumpers to move.

Select RS-485 or RS-232 for the serial port by positioning 3 jumpers as illustrated. Do not use the INIT jumper unless instructed.

Indicators
LINK LEDYellow LED indicates an Ethernet link is present. This indicator will light if a link is present regardless of processor or network activity. If not lit, check network wiring.
NETWORK
ACTIVITY
LED		Green LED is on solid during portions of the boot-up process, and then flashes briefly when Ethernet network traffic is detected.
I/O
ACTIVITY
LEDS		POWER: On continuous if power is present and power supply is working.

COMM: Flashes each time a Modbus RTU packet is sent.

ERROR: Flashes upon Modbus RTU response timeout or received error.

STATUS: On, blinking off briefly once a second, this is the "I'm alive" indicator for the I/O coprocessor.