CS I/O

The CS I/O port is a 9-pin (male) connector that is typically connected to a Campbell Scientific data logger by using the supplied SC12 cable. See CS I/O Pinout for the pinout.

The CS I/O port is not a typical RS-232 connection and is specific to Campbell Scientific products. CS I/O cannot be used for radio configuration using Device Configuration Utility.

For a typical remote radio site, the radio only needs to be connected to the data logger CS I/O port by using the supplied SC12 cable. This connection supplies operational power to the radio and serves as the data connection between the radio the data logger. The Active Interface setting must be set to CS I/O SDC.

An alternative, but much less common, use of CS I/O is connection to another communications peripheral through an A100 CS I/O null modem adapter. This is typically only used when creating a “phone to RF base” configuration. The radio Active Interface setting must be set to CS I/O ME Master and the other device (for example COM220) must be capable of being configured as a modem enabled (ME) peripheral.

CS I/O Pinout
Pin	Function	I/O	Description
1	5V	I	Sources 5 VDC to power peripherals
2	GND		GND for pin 1 and signals
3	Ring	O	Raised by modem to put data logger into telecommunications mode
4	RX	O	Serial data receive line
5	Modem Enable	I	Raised when data logger determines that associated modem raised the ring line
6	Synchronous device enable	I	Used by data logger to address synchronous devices; can be used as a printer enable
7	CLK/handshake	I/O	Used by data logger with SDE and TX lines to transfer data to synchronous devices
8	12V supplied by data logger	PWR	Sources 12 VDC to power peripherals
9	TX	I	Serial data transmit line
I = Signal into the radio, O = Signal out of the radio