SDM-SIO1

Name: SDM-SIO1
Brand: Campbell Scientific
SKU: 19456
Availability: Discontinued

1-Channel Serial Input/Output Module

SDM-SIO1

End of life

1-Channel Serial Input/Output Module

No longer available to order

This product is retained for service, documentation, and compatibility information.

Replaced by

SDM-SIO1A
One-Channel Serial I/O Module

Model:: SDM-SIO1
Item Number:: 19456
Warranty:: 1 year

Overview

The SDM-SIO1 is an RS-232, RS-422, or RS-485 serial expansion module. Up to fifteen SDM-SIO1 modules may be connected to a single data logger SDM interface. This module is commonly used to interface serial sensors to a data logger. Please refer to the Compatibility information regarding which data loggers the SDM-SIO1 may be used with.

Technical Description

The SDM-SIO1 is a serial expansion module that allows a data logger to communicate with serial devices that interface using true RS-232, RS-422, or RS-485 signals. Up to fifteen SDM-SIO1 modules may be connected to a single data logger SDM interface. Remote serial devices use industry standard hardware and protocols to connect to the data logger through the SDM-SIO1 interface. When operating in the RS-232 mode, the module also provides hardware handshaking. The SDM-SIO1 Module is implemented in such a way that it looks like a built-in serial port to the user when writing programs in CRBasic. This means that all the user needs to do is define the address of the SDM-SIO1, using a rotary switch on the side of the unit. The serial port can then be used as if it were built into the data logger.

Benefits

Expands the number of serial devices that can communicate with the data logger

Specifications

Modes of Operation: RS-232
(full duplex & receive only)
RS-485
(half and full duplex)
RS-422
(half and full duplex)
Data Rates: 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, or 115200 bps
Data Format: 8, 7 bit data size
None, odd or even parity
One or two stops bits
EMC Compliance: Complies with IEC 61326.
Power Supply Connection: +12 V
Operating Voltage: 7 V
(minimum)
12 V
(nominal)
20 V
(maximum)
Operating Temperature: -25° to +55°C
Dimensions: 5.4 x 8.0 x 2.5 cm
(2.2 x 3.1 x 1.0 in.)

Current Drain

Standby: 70 µA
(nominal)
100 μA
(maximum)
Active: 5 to 13 mA
(depending on transmit mode and connections made)

Buffer

Storage Type: Both transmit and receive buffers are fill and discard.
Transmit-Buffer Size: 767 bytes
(buffer from data logger to sensor)
Receive-Buffer Size: 2047 bytes
(buffer from sensor to data logger)

Accessories

(2)

Common Accessories

(2)

Replacement Parts

(2)

Ships With

(2)

Compatibility

Data Logger Considerations

The SDM-SIO1A does NOT support auto baud rate detection nor the use of the serial port for general PakBus communications.

Enclosure Considerations

The SDM-SIO1 requires a desiccated, non-condensing environment. The SDM-SIO1 has built-in keyhole flanges for mounting to the backplates of Campbell Scientific enclosures.